Self-compacting concrete (SCC) is a concrete which flows under its own weight in the congested areas without any external force. Increase in demand and decrease in availability of fine aggregates, we use an alternative material called quarry dust, it is a finer material generated from stone quarries. This paper deals with the feasibility study on the utilization of quarry dust as a partial replacement in fine aggregate. In this experimental investigation, the properties of materials are tested as per Indian standards. The filling ability, passing ability and flowability characteristics of SCC as a partial replacement of fine aggregate with quarry dust was investigated as per EFNARC guidelines. In this experimental investigation, different mixes were prepared as a partial replacement of fine aggregate with quarry dust at various percentages such as 10%, 20%, 30%, 40% and 50% to obtain the optimum replacement level. The Slump flow, U-box, L-Box, V-Funnel and J-ring tests were carried out to determine the workability of SCC. The finding shows that the workability decreases with the addition of quarry dust. It is concluded that addition of quarry dust reduces the fresh properties of the SCC.
{"title":"Effect of Quarry Dust on the Fresh Concrete Properties of Self Compacting Concrete","authors":"A. Anitha, C. Karthik, S.C. Sarathkumar","doi":"10.4028/p-wpzhd6","DOIUrl":"https://doi.org/10.4028/p-wpzhd6","url":null,"abstract":"Self-compacting concrete (SCC) is a concrete which flows under its own weight in the congested areas without any external force. Increase in demand and decrease in availability of fine aggregates, we use an alternative material called quarry dust, it is a finer material generated from stone quarries. This paper deals with the feasibility study on the utilization of quarry dust as a partial replacement in fine aggregate. In this experimental investigation, the properties of materials are tested as per Indian standards. The filling ability, passing ability and flowability characteristics of SCC as a partial replacement of fine aggregate with quarry dust was investigated as per EFNARC guidelines. In this experimental investigation, different mixes were prepared as a partial replacement of fine aggregate with quarry dust at various percentages such as 10%, 20%, 30%, 40% and 50% to obtain the optimum replacement level. The Slump flow, U-box, L-Box, V-Funnel and J-ring tests were carried out to determine the workability of SCC. The finding shows that the workability decreases with the addition of quarry dust. It is concluded that addition of quarry dust reduces the fresh properties of the SCC.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140688715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Magnesium alloys have spurred a strong interest in automobile and aerospace industries owing to their high specific strength and stiffness, with magnesium being the lightest structural metal. Alloying with rare earth improves tensile properties considerably. However, the availability of rare-earth elements is a concern. Therefore, attempts are being made to prepare alloys without rare-earth elements. One Mg-1Ca alloy was prepared with different amounts of Sn to study the impact on the high-temperature strength after dynamic recrystallization by hot rolling. Optical and electron microscopy analyzed the change in the microstructure. XRD and EDS were used to identify phases and composition of different microconstituent particles and high-temperature strength was measured at 250°C, 300°C, and 350 °C under 2 x 10-4 s -1 strain rate and at 3000C, 3500C, 4000C, and 4500C temperature under 5 x 10 -4 s -1 strain rate. According to XRD investigation, the alloys essentially comprise the Ca-containing phase and Mg2Sn particles. The Mg-1Ca-1Sn alloy exhibited maximum high-temperature strength at 250°C, attributed to the maximum amounts of MgCaSn particles. It was also found that dynamic recrystallization was accelerated by particle-stimulated nucleation and maximum refinement was found at 1% Sn-containing alloys.
镁合金具有很高的比强度和刚度，是最轻的结构金属，因此在汽车和航空航天工业中引起了强烈的兴趣。与稀土合金化可大大提高拉伸性能。然而，稀土元素的供应是一个令人担忧的问题。因此，人们正在尝试制备不含稀土元素的合金。为了研究热轧动态再结晶后对高温强度的影响，我们制备了一种含不同量锡的 Mg-1Ca 合金。光学和电子显微镜分析了微观结构的变化。利用 XRD 和 EDS 鉴别了不同微成分颗粒的相和组成，并在 250℃、300℃ 和 350℃（应变率为 2 x 10-4 s -1 ）以及 3000℃、3500℃、4000℃ 和 4500℃（应变率为 5 x 10 -4 s -1 ）条件下测量了高温强度。根据 XRD 研究，合金主要由含钙相和 Mg2Sn 颗粒组成。Mg-1Ca-1Sn 合金在 250°C 时表现出最大的高温强度，这归因于 MgCaSn 颗粒的最大含量。研究还发现，颗粒刺激成核加速了动态再结晶，含 1%锡的合金的细化程度最高。
{"title":"Effect of Addition of Sn on High-Temperature Tensile Strength of Rare-Earth Free Mg-1Ca Alloy","authors":"H. Al Rashed, Shad Inquiad Mim, Bijoy Mallick","doi":"10.4028/p-pi1yt2","DOIUrl":"https://doi.org/10.4028/p-pi1yt2","url":null,"abstract":"Magnesium alloys have spurred a strong interest in automobile and aerospace industries owing to their high specific strength and stiffness, with magnesium being the lightest structural metal. Alloying with rare earth improves tensile properties considerably. However, the availability of rare-earth elements is a concern. Therefore, attempts are being made to prepare alloys without rare-earth elements. One Mg-1Ca alloy was prepared with different amounts of Sn to study the impact on the high-temperature strength after dynamic recrystallization by hot rolling. Optical and electron microscopy analyzed the change in the microstructure. XRD and EDS were used to identify phases and composition of different microconstituent particles and high-temperature strength was measured at 250°C, 300°C, and 350 °C under 2 x 10-4 s -1 strain rate and at 3000C, 3500C, 4000C, and 4500C temperature under 5 x 10 -4 s -1 strain rate. According to XRD investigation, the alloys essentially comprise the Ca-containing phase and Mg2Sn particles. The Mg-1Ca-1Sn alloy exhibited maximum high-temperature strength at 250°C, attributed to the maximum amounts of MgCaSn particles. It was also found that dynamic recrystallization was accelerated by particle-stimulated nucleation and maximum refinement was found at 1% Sn-containing alloys.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140689464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
SS316L is an austenite-grade steel material offering a better strength-to-ductility ratio, higher corrosion resistance, and biocompatibility. In DMLS products, residual stresses are inevitable because of the thermal gradient involved in the process and the porosity that results from process limitations. As a result of these defects, the strength of the product is reduced and the quality of the product is compromised. The primary objective of this article is to offer an in-depth analysis of different heat treatment methods that are employed to achieve superior properties in products manufactured through DMLS processing. Thermal processing techniques include Hot Isostatic Pressing, Solution Heat Treatment, T6 heat treatment, Direct Aging Treatment, etc. Using thermal post-processing techniques, 99.99% of the porosity is eliminated, corrosion resistance is significantly increased, and mechanical properties are enhanced. This study examines the need for thermal post-processing, the methodology employed, and the property enhancements achieved by DMLS products. There are many factors affecting thermal post-processing, however, efforts have been made to review the details regarding thermal post-processing applied to SS316L material processed with direct metal laser sintering. Moreover, the specific methods for post-processing can be determined based on the product's intended application.
{"title":"A Comprehensive Review on the Effect of Thermal Post Processing on DMLS Processed SS316L Components","authors":"Purushottam Balaso Pawar, Swanand G. Kulkarni","doi":"10.4028/p-oqdeq5","DOIUrl":"https://doi.org/10.4028/p-oqdeq5","url":null,"abstract":"SS316L is an austenite-grade steel material offering a better strength-to-ductility ratio, higher corrosion resistance, and biocompatibility. In DMLS products, residual stresses are inevitable because of the thermal gradient involved in the process and the porosity that results from process limitations. As a result of these defects, the strength of the product is reduced and the quality of the product is compromised. The primary objective of this article is to offer an in-depth analysis of different heat treatment methods that are employed to achieve superior properties in products manufactured through DMLS processing. Thermal processing techniques include Hot Isostatic Pressing, Solution Heat Treatment, T6 heat treatment, Direct Aging Treatment, etc. Using thermal post-processing techniques, 99.99% of the porosity is eliminated, corrosion resistance is significantly increased, and mechanical properties are enhanced. This study examines the need for thermal post-processing, the methodology employed, and the property enhancements achieved by DMLS products. There are many factors affecting thermal post-processing, however, efforts have been made to review the details regarding thermal post-processing applied to SS316L material processed with direct metal laser sintering. Moreover, the specific methods for post-processing can be determined based on the product's intended application.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140685885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Sowmya, Paulraj Velci Shridevi, Ayyanar Dhanalakshmi, M. S. Shahul Hameed
The mechanic shops and rubber processing industries are where a lot of rubber tyre trash is produced. The purpose of this project is to replace coarse aggregates with rubber at a rate of 5, 10, 15, and 20% and to recycle coarse aggregates. With a 10% constant replacement of coarse aggregates, several tests are conducted, including compressive strength tests, split tensile strength tests, and flexural strength tests on walls. The strength characteristics were compared to those of typical concrete after 7, 14, and 28 days of use. The utilisation of waste elements like rubber boosted the concrete's strength when compared to conventional concrete.
{"title":"Experimental Study on Concrete with Partial Replacement of RCA with Rubber Tyre","authors":"S. Sowmya, Paulraj Velci Shridevi, Ayyanar Dhanalakshmi, M. S. Shahul Hameed","doi":"10.4028/p-mvfl0l","DOIUrl":"https://doi.org/10.4028/p-mvfl0l","url":null,"abstract":"The mechanic shops and rubber processing industries are where a lot of rubber tyre trash is produced. The purpose of this project is to replace coarse aggregates with rubber at a rate of 5, 10, 15, and 20% and to recycle coarse aggregates. With a 10% constant replacement of coarse aggregates, several tests are conducted, including compressive strength tests, split tensile strength tests, and flexural strength tests on walls. The strength characteristics were compared to those of typical concrete after 7, 14, and 28 days of use. The utilisation of waste elements like rubber boosted the concrete's strength when compared to conventional concrete.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140686116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahmad Marzuki, Hery Purwanto, A. D. Sutomo, H. Harjana, Ari Handono Ramelan, D. E. Fausta, R. W. Astuti, A. N. Rahmawati, F. A. Alvyanti, R. Oktafiani
Five boro-tellurite glasses with chemical formula 55TeO2-(12-x)B2O3-32ZnO-(1+x)Na2O (TZBN), (x= 0; 1; 2; 3; 4; mole%) were successfully synthesized by conventional melt-quenching technique. The physical properties of the glass was studied to understand effect of partial substitution between B2O3 and Na2O. The density was measured using pycnometer based on Archimedes law. The other physical properties can be obtained by assisted some mathematical equation. Refer to the measurement, the density was found decreased by 4.905 to 4.590 gr/cm3 because the molecular weight difference between B2O3 and Na2O. Meanwhile the molar volume increased by 25.05 to 27.11 cm3/mole due to higher atomic radii of Na rather than B which raise NBO inside the glass network. Meanwhile, OPD, Vo, polaron radius, inter-ionic distance, packing density,and number of bond per unit volume consequently have been decreased. While the Field strength has increase due to stronger Na-O bonds. Reflects from the results the TZBN glasses could be used as active material for laser.
{"title":"Physical Properties Study of Sodium Doped Boro-Tellurite (Na2O: TeO2-B2O3-ZnO) Glasses","authors":"Ahmad Marzuki, Hery Purwanto, A. D. Sutomo, H. Harjana, Ari Handono Ramelan, D. E. Fausta, R. W. Astuti, A. N. Rahmawati, F. A. Alvyanti, R. Oktafiani","doi":"10.4028/p-qiz4bj","DOIUrl":"https://doi.org/10.4028/p-qiz4bj","url":null,"abstract":"Five boro-tellurite glasses with chemical formula 55TeO2-(12-x)B2O3-32ZnO-(1+x)Na2O (TZBN), (x= 0; 1; 2; 3; 4; mole%) were successfully synthesized by conventional melt-quenching technique. The physical properties of the glass was studied to understand effect of partial substitution between B2O3 and Na2O. The density was measured using pycnometer based on Archimedes law. The other physical properties can be obtained by assisted some mathematical equation. Refer to the measurement, the density was found decreased by 4.905 to 4.590 gr/cm3 because the molecular weight difference between B2O3 and Na2O. Meanwhile the molar volume increased by 25.05 to 27.11 cm3/mole due to higher atomic radii of Na rather than B which raise NBO inside the glass network. Meanwhile, OPD, Vo, polaron radius, inter-ionic distance, packing density,and number of bond per unit volume consequently have been decreased. While the Field strength has increase due to stronger Na-O bonds. Reflects from the results the TZBN glasses could be used as active material for laser.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 84","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140213216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nasikhudin Nasikhudin, Yusril Al Fath, Istiqomah Istiqomah, Hari Rahmadani, Markus Diantoro, H. Pujiarti
Transparent flexible electrodes (TFEs) are extremely crucial for expanding flexible and wearable electronic devices. Silver nanowires (AgNWs) have been extensively investigated as an alternative to replace Indium Tin Oxide (ITO) as a commercial TFE due to their high conductivity, transparency, and flexibility. AgNWs have replaced ITO-based electrodes as the preferred approach in flexible, transparent, and conductive electrodes (FTCE). AgNWs outperform other materials, such as Reduced Graphene Oxide (RGO), ceramic material, Carbon Nanotubes (CNT), and conductive polymers, in terms of electrical conductivity, transmittance, flexibility, and low sheet resistance. Numerous techniques, including as electrospinning, spray coating, spin coating, and doctor blades, are used to use AgNWs as flexible substrates. Seed-based growth and template-assisted synthesis are two fundamental synthesis techniques that could be used to generate AgNWs. However, poor adhesiveness, and thermal and electrical stability, begin to be bottlenecks for AgNWs as high deployment in a variety of devices. So AgNWs synthesis process began to shift to other methods, such as wet chemical and polyol. In this paper, short and clear summary of various advances including post-treatment methods such as UV radiation, microwave, sonication, quenching, and so on is conducted to be one step forward to test mechanical properties and to improve AgNWs performance.
{"title":"Silver Nanowires (AgNWs) Post-Treatment Effect in Application of Flexible Transparent and Conductive Electrodes: A Mini Review","authors":"Nasikhudin Nasikhudin, Yusril Al Fath, Istiqomah Istiqomah, Hari Rahmadani, Markus Diantoro, H. Pujiarti","doi":"10.4028/p-e4avqd","DOIUrl":"https://doi.org/10.4028/p-e4avqd","url":null,"abstract":"Transparent flexible electrodes (TFEs) are extremely crucial for expanding flexible and wearable electronic devices. Silver nanowires (AgNWs) have been extensively investigated as an alternative to replace Indium Tin Oxide (ITO) as a commercial TFE due to their high conductivity, transparency, and flexibility. AgNWs have replaced ITO-based electrodes as the preferred approach in flexible, transparent, and conductive electrodes (FTCE). AgNWs outperform other materials, such as Reduced Graphene Oxide (RGO), ceramic material, Carbon Nanotubes (CNT), and conductive polymers, in terms of electrical conductivity, transmittance, flexibility, and low sheet resistance. Numerous techniques, including as electrospinning, spray coating, spin coating, and doctor blades, are used to use AgNWs as flexible substrates. Seed-based growth and template-assisted synthesis are two fundamental synthesis techniques that could be used to generate AgNWs. However, poor adhesiveness, and thermal and electrical stability, begin to be bottlenecks for AgNWs as high deployment in a variety of devices. So AgNWs synthesis process began to shift to other methods, such as wet chemical and polyol. In this paper, short and clear summary of various advances including post-treatment methods such as UV radiation, microwave, sonication, quenching, and so on is conducted to be one step forward to test mechanical properties and to improve AgNWs performance.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140216978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ade Siyanti Nurul Hidayah, Markus Diantoro, Nasikhudin Nasikhudin, Siti Sendari, Nuviya Illa Muthi Aturroifah, W. Meevasana, S. Maensiri
The development of the supercapbattery has become the focus of energy storage research due to their potential to increase energy and power density. This research is focused on developing a modification of silicon (Si) porous as an anode with Al2O3/CuCrO2/AC composite as a cathode of supercapacitor. These electrodes were synthesized using LA133 binder with deionized water as solvent. The supercapacitor electrode uses an aluminum foil substrate, while the Si electrode uses a cupper foil substrate. The structural and morphological characterization of the electrodes were identified through XRD, FTIR, and SEM tests, while the electrochemical performance characterization using Galvanostatic Charge-Discharge (GCD) instruments. The results of XRD data analysis of thin film electrodes of supercapacitor showed diffraction peaks which indicated the phases Al2O3/CuCrO2/AC and Si porous. The absorption functional groups of Al2O3/CuCrO2/AC and Si porous were identified through FTIR characterization. The results of SEM showed the addition of CuCrO2 and structure modification of silicon into porous caused increasing value of porosity. The electrochemical performance of the optimum point at Al2O3/CuCrO2/AC condition, showing a specific capacitance of 50.3 F/g, an energy density of 36.499 Wh/kg, and a power density of 433.6 W/kg. The combination of Al2O3/CuCrO2/AC//Si Porous 16 for supercapbattery devices shows performance with a specific capacitance of 14.4 F/g, an energy density of 6.1 Wh/kg, and a power density of 33.6 W/kg. These results indicate an increase in electrochemical performance compared with Si anodes without modification.
{"title":"Performance Optimization of Supercapbattery with Porous Modification on Silicon as Anode and Cathode Based on Al2O3/CuCrO2","authors":"Ade Siyanti Nurul Hidayah, Markus Diantoro, Nasikhudin Nasikhudin, Siti Sendari, Nuviya Illa Muthi Aturroifah, W. Meevasana, S. Maensiri","doi":"10.4028/p-fztz60","DOIUrl":"https://doi.org/10.4028/p-fztz60","url":null,"abstract":"The development of the supercapbattery has become the focus of energy storage research due to their potential to increase energy and power density. This research is focused on developing a modification of silicon (Si) porous as an anode with Al2O3/CuCrO2/AC composite as a cathode of supercapacitor. These electrodes were synthesized using LA133 binder with deionized water as solvent. The supercapacitor electrode uses an aluminum foil substrate, while the Si electrode uses a cupper foil substrate. The structural and morphological characterization of the electrodes were identified through XRD, FTIR, and SEM tests, while the electrochemical performance characterization using Galvanostatic Charge-Discharge (GCD) instruments. The results of XRD data analysis of thin film electrodes of supercapacitor showed diffraction peaks which indicated the phases Al2O3/CuCrO2/AC and Si porous. The absorption functional groups of Al2O3/CuCrO2/AC and Si porous were identified through FTIR characterization. The results of SEM showed the addition of CuCrO2 and structure modification of silicon into porous caused increasing value of porosity. The electrochemical performance of the optimum point at Al2O3/CuCrO2/AC condition, showing a specific capacitance of 50.3 F/g, an energy density of 36.499 Wh/kg, and a power density of 433.6 W/kg. The combination of Al2O3/CuCrO2/AC//Si Porous 16 for supercapbattery devices shows performance with a specific capacitance of 14.4 F/g, an energy density of 6.1 Wh/kg, and a power density of 33.6 W/kg. These results indicate an increase in electrochemical performance compared with Si anodes without modification.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140220077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahmad Marzuki, A. D. Sutomo, Hery Purwanto, R. Riyatun, D. E. Fausta, Laila Amalia Putri, R. W. Astuti
Tm2O3 doped tellurite-zinc-bismuth-sodium (TZBN) glass samples with varying compositions were prepared through melt quenching technique. The composition of these glass was 60 TeO2 - (30-x) ZnO - 5 Bi2O3 - 5 Na2O - x Tm2O3 with (x = 0.5; 1.0; 1.5; 2.0 and 2.5 mol%). We reported the result of a systematic study of the thermal properties of these glass by using differential thermal analysis (DTA). The thermal characteristics of these glass (glass transition, Tg, crystallization, Tc, and melting, Tm) increased significantly with Tm2O3 content and the glasses were more thermally stable (greater ΔT=Tc-Tg). The glass transition value slightly increased from 314 to 323 °C otherwise thermal stability ΔT changed from 112 to 131°C. The ratio of Tg/Tm values for TZBN doped Thulium glasses were about 0.558 to 0.589, indicated that these glasses possess good thermal stability. The Hruby parameter (Kg) with Tm3+ doped in this study improved glass-forming ability, which is desirable for various applications such as optical fibers drawing and sensors.
{"title":"Thermal Stability of ZnO/Tm2O3 Substitution on Tellurite-Zinc-Bismuth-Sodium (TZBN) Glasses","authors":"Ahmad Marzuki, A. D. Sutomo, Hery Purwanto, R. Riyatun, D. E. Fausta, Laila Amalia Putri, R. W. Astuti","doi":"10.4028/p-6opeq6","DOIUrl":"https://doi.org/10.4028/p-6opeq6","url":null,"abstract":"Tm2O3 doped tellurite-zinc-bismuth-sodium (TZBN) glass samples with varying compositions were prepared through melt quenching technique. The composition of these glass was 60 TeO2 - (30-x) ZnO - 5 Bi2O3 - 5 Na2O - x Tm2O3 with (x = 0.5; 1.0; 1.5; 2.0 and 2.5 mol%). We reported the result of a systematic study of the thermal properties of these glass by using differential thermal analysis (DTA). The thermal characteristics of these glass (glass transition, Tg, crystallization, Tc, and melting, Tm) increased significantly with Tm2O3 content and the glasses were more thermally stable (greater ΔT=Tc-Tg). The glass transition value slightly increased from 314 to 323 °C otherwise thermal stability ΔT changed from 112 to 131°C. The ratio of Tg/Tm values for TZBN doped Thulium glasses were about 0.558 to 0.589, indicated that these glasses possess good thermal stability. The Hruby parameter (Kg) with Tm3+ doped in this study improved glass-forming ability, which is desirable for various applications such as optical fibers drawing and sensors.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140215492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fused Deposition Modelling (FDM) is a three-dimensional (3D) printing technology known for its low-cost rapid manufacturing of parts. Nowadays, various industries such as automotive, aerospace, and maritime are using this technology to manufacture 3D-printed parts that have undergone high temperatures. The material used in this study is the Thermoplastic Polyurethane (TPU), which is the most commonly-used type of Thermoplastic Elastomer (TPE) in 3D printing. This material is a combination of substances from the qualities and characteristics of both thermoplastic and vulcanized thermoset rubber. TPU has excellent abrasion resistance, hardness, chemical, and thermal resistance properties. In addition, TPU is a great fit for making hoses, gaskets, and seals due to its oil and grease resistance properties. Due to the growing application of 3D-printed materials at elevated temperatures, this study aims to characterize the tensile strength of TPU 3D-printed materials when thermal cycled. The test results concluded that the tensile properties of TPU 3D-printed specimens were significantly influenced by the number of thermal cycles it was subjected to. The samples that underwent four thermal cycles exhibited the highest modulus of elasticity and stress at 200% strain. While samples which underwent 2, 8, and 16 thermal cycles resulted to a higher modulus of elasticity and tensile stress at 200% strain than the untreated specimen.
熔融沉积成型（FDM）是一种三维（3D）打印技术，以低成本快速制造零件而闻名。如今，汽车、航空航天和海事等各行各业都在使用这种技术制造经过高温处理的三维打印部件。本研究中使用的材料是热塑性聚氨酯（TPU），它是 3D 打印中最常用的一种热塑性弹性体（TPE）。这种材料综合了热塑性塑料和硫化热固性橡胶的品质和特性。热塑性聚氨酯具有出色的耐磨性、硬度、耐化学性和耐热性。此外，热塑性聚氨酯还具有耐油和耐油脂的特性，非常适合制作软管、垫圈和密封件。由于三维打印材料在高温下的应用越来越广泛，本研究旨在表征热循环时 TPU 三维打印材料的拉伸强度。测试结果表明，热循环次数对 TPU 3D 打印试样的拉伸性能有显著影响。经过四次热循环的试样在 200% 应变时表现出最高的弹性模量和应力。而经过 2、8 和 16 次热循环的试样在 200% 应变时的弹性模量和拉伸应力均高于未经处理的试样。
{"title":"Effects of Thermal Cycling on the Mechanical Strength of TPU 3D-Printed Material","authors":"M. T. Espino, B. Tuazon, J. R. Dizon","doi":"10.4028/p-irurz3","DOIUrl":"https://doi.org/10.4028/p-irurz3","url":null,"abstract":"Fused Deposition Modelling (FDM) is a three-dimensional (3D) printing technology known for its low-cost rapid manufacturing of parts. Nowadays, various industries such as automotive, aerospace, and maritime are using this technology to manufacture 3D-printed parts that have undergone high temperatures. The material used in this study is the Thermoplastic Polyurethane (TPU), which is the most commonly-used type of Thermoplastic Elastomer (TPE) in 3D printing. This material is a combination of substances from the qualities and characteristics of both thermoplastic and vulcanized thermoset rubber. TPU has excellent abrasion resistance, hardness, chemical, and thermal resistance properties. In addition, TPU is a great fit for making hoses, gaskets, and seals due to its oil and grease resistance properties. Due to the growing application of 3D-printed materials at elevated temperatures, this study aims to characterize the tensile strength of TPU 3D-printed materials when thermal cycled. The test results concluded that the tensile properties of TPU 3D-printed specimens were significantly influenced by the number of thermal cycles it was subjected to. The samples that underwent four thermal cycles exhibited the highest modulus of elasticity and stress at 200% strain. While samples which underwent 2, 8, and 16 thermal cycles resulted to a higher modulus of elasticity and tensile stress at 200% strain than the untreated specimen.","PeriodicalId":18262,"journal":{"name":"Materials Science Forum","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140219826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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