Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.01
Hak Ki Yu
2D material research, which has been actively researched recently, has had an impact on 1D material research and development through the concept of related material expansion. Although 1D nanowire materials are expected to fuel advances in electronic applications, there is still much to be explored in terms of material diversity. We would like to introduce a variety of quasi-1D materials based on vdW (van der Waals) bonding having a chemical composition of M2N3Se8 (M2N3S8), which is being studied recently. We would like to explain the polymorphism structure and device application characteristics that can occur during the synthesis materials, and the possibility of band-gap engineering through alloying of M and N transition metals and Se-S substitution. Through this, we intend to propose various possibilities of application of the quasi 1D M2N3Se8 (M2N3S8)material system proposed in this paper.
{"title":"Quasi-1D M2N3Se8 (M2N3S8): Synthesis and applications","authors":"Hak Ki Yu","doi":"10.31613/ceramist.2022.25.4.01","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.01","url":null,"abstract":"2D material research, which has been actively researched recently, has had an impact on 1D material research and development through the concept of related material expansion. Although 1D nanowire materials are expected to fuel advances in electronic applications, there is still much to be explored in terms of material diversity. We would like to introduce a variety of quasi-1D materials based on vdW (van der Waals) bonding having a chemical composition of M<sub>2</sub>N<sub>3</sub>Se<sub>8</sub> (M<sub>2</sub>N<sub>3</sub>S<sub>8</sub>), which is being studied recently. We would like to explain the polymorphism structure and device application characteristics that can occur during the synthesis materials, and the possibility of band-gap engineering through alloying of M and N transition metals and Se-S substitution. Through this, we intend to propose various possibilities of application of the quasi 1D M<sub>2</sub>N<sub>3</sub>Se<sub>8</sub> (M<sub>2</sub>N<sub>3</sub>S<sub>8</sub>)material system proposed in this paper.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74408185","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}
Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.07
S. So
Hydrogen storage is required to make a breakthrough to commercializing hydrogen energy; however, the development of hydrogen storage material based on both physisorption and chemisorption faced their limit. To this end, researchers pay attention to applying the spillover mechanism to hydrogen storage, and a lot of research report the positive effect of the introduction of Pt to dissociate hydrogen molecule into porous material on hydrogen storage performance. Moreover, the mechanism of migration and adsorption of dissociated hydrogen from Pt is suggested, which is so-called spillover mechanism. However, some researchers raise doubt about the feasibility of the spillover mechanism in hydrogen storage. In this paper, we verify the effect of the introduction of Pt on hydrogen storage performance and discuss its feasibility.
{"title":"The feasibility of a spillover mechanism in the field of hydrogen storage material","authors":"S. So","doi":"10.31613/ceramist.2022.25.4.07","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.07","url":null,"abstract":"Hydrogen storage is required to make a breakthrough to commercializing hydrogen energy; however, the development of hydrogen storage material based on both physisorption and chemisorption faced their limit. To this end, researchers pay attention to applying the spillover mechanism to hydrogen storage, and a lot of research report the positive effect of the introduction of Pt to dissociate hydrogen molecule into porous material on hydrogen storage performance. Moreover, the mechanism of migration and adsorption of dissociated hydrogen from Pt is suggested, which is so-called spillover mechanism. However, some researchers raise doubt about the feasibility of the spillover mechanism in hydrogen storage. In this paper, we verify the effect of the introduction of Pt on hydrogen storage performance and discuss its feasibility.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77399391","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}
Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.05
Joohoon Kang
Two-dimensional (2D) nanomaterials have been considered as a promising materials platform for next-generation electronics due to their unique electronic, optical, and mechanical properties. Since the first graphene exfoliation method has been reported, other layered materials having the structural analogues with different electrical properties have been further explored to discover semiconducting candidates. For example, semiconducting MoS2 has been widely studied for electronic device applications including transistors, phototransistors, diodes, and logic gates. However, the technological limitations to produce wafer-scale MoS2 thin-films only enable to demonstrate prototype electronic applications. To overcome this limitation of scalability, solution-based processing has been considered as a strong candidate. In particular, molecular intercalation driven electrochemical exfoliation method can produce high quality 2D nanosheets in large quantity without vacuum- or high temperature-related processes. In this article, solution-processed 2D materials will be introduced as a potential platform toward wafer-scale, high-performance electronics and future outlook will be provided as important aspects should be considered to apply this materials platform for the real-world applications.
{"title":"Electrochemically Exfoliated Two-Dimensional Nanomaterials for Electronics","authors":"Joohoon Kang","doi":"10.31613/ceramist.2022.25.4.05","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.05","url":null,"abstract":"Two-dimensional (2D) nanomaterials have been considered as a promising materials platform for next-generation electronics due to their unique electronic, optical, and mechanical properties. Since the first graphene exfoliation method has been reported, other layered materials having the structural analogues with different electrical properties have been further explored to discover semiconducting candidates. For example, semiconducting MoS2 has been widely studied for electronic device applications including transistors, phototransistors, diodes, and logic gates. However, the technological limitations to produce wafer-scale MoS2 thin-films only enable to demonstrate prototype electronic applications. To overcome this limitation of scalability, solution-based processing has been considered as a strong candidate. In particular, molecular intercalation driven electrochemical exfoliation method can produce high quality 2D nanosheets in large quantity without vacuum- or high temperature-related processes. In this article, solution-processed 2D materials will be introduced as a potential platform toward wafer-scale, high-performance electronics and future outlook will be provided as important aspects should be considered to apply this materials platform for the real-world applications.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87224550","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}
Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.04
H. Oh
Semiconductor nanostructures or thin films are vital components of modern optoelectronic devices, such as light-emitting diodes, sensors, or transistors. While single crystalline wafers are used as heteroepitaxial templates for them, increasing demands on flexibility or transferability require separation of the grown semiconductor structures on such substrates, which is technically challenging and expensive. Recent research suggests that large-scale 2D nanomaterials can serve as heteroepitaxial templates and provide additional functionalities such as transferability to foreign substrates or mechanical flexibility. In this paper, growth, structural properties, and optoelectronic device applications of semiconductor nanostructures or thin films which are heteroepitaxially grown on large-scale 2D nanomaterials are reviewed.
{"title":"Heteroepitaxially grown semiconductors on large-scale 2D nanomaterials for optoelectronics devices","authors":"H. Oh","doi":"10.31613/ceramist.2022.25.4.04","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.04","url":null,"abstract":"Semiconductor nanostructures or thin films are vital components of modern optoelectronic devices, such as light-emitting diodes, sensors, or transistors. While single crystalline wafers are used as heteroepitaxial templates for them, increasing demands on flexibility or transferability require separation of the grown semiconductor structures on such substrates, which is technically challenging and expensive. Recent research suggests that large-scale 2D nanomaterials can serve as heteroepitaxial templates and provide additional functionalities such as transferability to foreign substrates or mechanical flexibility. In this paper, growth, structural properties, and optoelectronic device applications of semiconductor nanostructures or thin films which are heteroepitaxially grown on large-scale 2D nanomaterials are reviewed.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91063878","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}
Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.06
Hee Jo Song
Polymer electrolyte membrane water electrolysis (PEMWE) is regarded as commercial electrochemical water-splitting technology to produce clean and sustainable hydrogen fuel from renewable energy resources. But current PEMWE system requires the noble metal-based metal, such as Pt, Ir or Ru, as electrocatalysts, which limits the large-scale commercialization of PEMWE. Thus, developing cost-effective and highly active electrocatalysts is important to produce hydrogen fuel on a large scale. In this paper, we introduce our recent works to develop inorganic-based noble-metal reduction or noble-metal-free nano-electrocatalysts for highly efficient water electrolysis through various facile synthetic strategies. First is Pt/MoC hybrid nanoparticles by hybridization of MoC and Pt nanoparticles for noble-metal-reduced HER electrocatalysts. Second is nickel and phosphorus substituted (Co1-xNix)(S1-yPy)2/Graphene ((Co1-xNix)(S1-yPy)2/G) 3D nano-architecture, which consist of self-assembly of 2D nanosheet, by structure-engineering and composition-engineering. Thrid is CoP nanosheets which are self-supported on carbon fabric current collector.
{"title":"Development of inorganic-based nano-electrocatalysts for highly efficient water electrolysis","authors":"Hee Jo Song","doi":"10.31613/ceramist.2022.25.4.06","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.06","url":null,"abstract":"Polymer electrolyte membrane water electrolysis (PEMWE) is regarded as commercial electrochemical water-splitting technology to produce clean and sustainable hydrogen fuel from renewable energy resources. But current PEMWE system requires the noble metal-based metal, such as Pt, Ir or Ru, as electrocatalysts, which limits the large-scale commercialization of PEMWE. Thus, developing cost-effective and highly active electrocatalysts is important to produce hydrogen fuel on a large scale. In this paper, we introduce our recent works to develop inorganic-based noble-metal reduction or noble-metal-free nano-electrocatalysts for highly efficient water electrolysis through various facile synthetic strategies. First is Pt/MoC hybrid nanoparticles by hybridization of MoC and Pt nanoparticles for noble-metal-reduced HER electrocatalysts. Second is nickel and phosphorus substituted (Co1-xNix)(S1-yPy)2/Graphene ((Co1-xNix)(S1-yPy)2/G) 3D nano-architecture, which consist of self-assembly of 2D nanosheet, by structure-engineering and composition-engineering. Thrid is CoP nanosheets which are self-supported on carbon fabric current collector.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78389671","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}
Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.09
Dongjoo Kim, J. Yang, Dong Seok Kim, Ji-Hae Yoon, H. Lee, K. Lim, Jae-Yong Kim
The control rod neutron absorbers for light water reactors with extended control rod lifetime and enhanced safety are being developed. It is an innovative material concept that can extend the lifetime by reducing irradiation-induced swelling compared to the existing control rod neutron absorber materials by utilizing the oxide-based materials. Furthermore, it can enhance the safety by improving various characteristics such as oxidation, eutectic reaction, volatilization behaviors of neutron absorber material. First, the oxide-based composition composed of a combination of neutron absorbers and structure stabilizers has been designed as material candidates for neutron absorber materials for control rods. The preliminary manufacturability test of the designed neutron absorber material candidates, and it has been confirmed a possibility that the designed material candidates can be fabricated using the conventional ceramic manufacturing process. In addition, the neutronic calculation/analysis and various out-of-pile tests (neutron absorber phase stability, oxidation and corrosion resistance, interaction and eutectic reaction between neutron absorber material and control rod tube material, melting behavior, etc.) are in progress. It has been also preparing the in-reactor swelling test of the selected material candidates at the HANARO research reactor in KAERI.
{"title":"Development Status of Control Rod Neutron Absorber Materials for Light Water Reactors with Extended Control Rod Lifetime and Enhanced Safety","authors":"Dongjoo Kim, J. Yang, Dong Seok Kim, Ji-Hae Yoon, H. Lee, K. Lim, Jae-Yong Kim","doi":"10.31613/ceramist.2022.25.4.09","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.09","url":null,"abstract":"The control rod neutron absorbers for light water reactors with extended control rod lifetime and enhanced safety are being developed. It is an innovative material concept that can extend the lifetime by reducing irradiation-induced swelling compared to the existing control rod neutron absorber materials by utilizing the oxide-based materials. Furthermore, it can enhance the safety by improving various characteristics such as oxidation, eutectic reaction, volatilization behaviors of neutron absorber material. First, the oxide-based composition composed of a combination of neutron absorbers and structure stabilizers has been designed as material candidates for neutron absorber materials for control rods. The preliminary manufacturability test of the designed neutron absorber material candidates, and it has been confirmed a possibility that the designed material candidates can be fabricated using the conventional ceramic manufacturing process. In addition, the neutronic calculation/analysis and various out-of-pile tests (neutron absorber phase stability, oxidation and corrosion resistance, interaction and eutectic reaction between neutron absorber material and control rod tube material, melting behavior, etc.) are in progress. It has been also preparing the in-reactor swelling test of the selected material candidates at the HANARO research reactor in KAERI.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88334368","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}
Pub Date : 2022-12-31DOI: 10.31613/ceramist.2022.25.4.03
Jun-Hui Choi, Jaehee Lee
Graphene, a one-atom-thick crystal of carbon, has attracted tremendous attention for various electrical and energy applications due to its superior physical and chemical properties. Among various graphene synthetic approaches, the CVD method has been considered a promising way to obtain high-quality graphene in large-scale. However, to obtain high-quality graphene by a typical CVD process, a high temperature of 1000 ℃ or higher should be required to decompose the hydrocarbon precursors, which is a major obstacle to the commercialization of CVD-graphene. Recently, enormous research has been conducted to grow high-quality graphene at a low temperature using various hydrocarbon precursors and external energy sources. Here, we briefly review recent research progress in the low-temperature growth of graphene using CVD methods. In addition, we introduce representative electronic applications based on low-temperature CVD-graphene.
{"title":"A brief review of low-temperature graphene growth via chemical vapor deposition","authors":"Jun-Hui Choi, Jaehee Lee","doi":"10.31613/ceramist.2022.25.4.03","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.4.03","url":null,"abstract":"Graphene, a one-atom-thick crystal of carbon, has attracted tremendous attention for various electrical and energy applications due to its superior physical and chemical properties. Among various graphene synthetic approaches, the CVD method has been considered a promising way to obtain high-quality graphene in large-scale. However, to obtain high-quality graphene by a typical CVD process, a high temperature of 1000 ℃ or higher should be required to decompose the hydrocarbon precursors, which is a major obstacle to the commercialization of CVD-graphene. Recently, enormous research has been conducted to grow high-quality graphene at a low temperature using various hydrocarbon precursors and external energy sources. Here, we briefly review recent research progress in the low-temperature growth of graphene using CVD methods. In addition, we introduce representative electronic applications based on low-temperature CVD-graphene.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90722851","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}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.09
Yerang Park, I. Hwang
Two dimensional (2D) or quasi-2D halide perovskites have attracted intense interest in recent years for the replacement of three dimensional(3D) perovskites, owing to their stability and structural/optoelectronic tunability. However, the control of their composition and orientation is challenging when solution processed for thin films, because of the similarity in formation energy for different layer numbers. In this review, we discuss the factors affecting formation of 2D and quasi 2D perovskites, especially Ruddlesden-Popper perovskites, in solution-processed thin films. All the factors are associated with nucleation and growth kinetics, which affect their phase distribution and orientation. Furthermore, the performances of the photovoltaics and light-emitting diodes based on the controlled quasi-2D perovskites are briefly discussed.
{"title":"Understanding on the formation mechanisms of quasi-2D Ruddlesden- Popper halide perovskites","authors":"Yerang Park, I. Hwang","doi":"10.31613/ceramist.2022.25.3.09","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.09","url":null,"abstract":"Two dimensional (2D) or quasi-2D halide perovskites have attracted intense interest in recent years for the replacement of three dimensional(3D) perovskites, owing to their stability and structural/optoelectronic tunability. However, the control of their composition and orientation is challenging when solution processed for thin films, because of the similarity in formation energy for different layer numbers. In this review, we discuss the factors affecting formation of 2D and quasi 2D perovskites, especially Ruddlesden-Popper perovskites, in solution-processed thin films. All the factors are associated with nucleation and growth kinetics, which affect their phase distribution and orientation. Furthermore, the performances of the photovoltaics and light-emitting diodes based on the controlled quasi-2D perovskites are briefly discussed.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83679577","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}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.07
J. Choi, Yoon Hee Nam, Karam Han
For core imaging technologies, various R&D for optical lens design have been carried out to realize highresolution images without distortion. The need for systematic analysis of the optical and physical properties of various materials and the correlation for optical lens design has increased. Therefore, core characteristics of visible optical glass material such as refractive index, dispersion value, transmittance, coefficient of thermal expansion, and striae were reviewed from the viewpoint of improving the performance of optical lenses. In this study, the correlation between the refractive index and dispersion value of the optical glass material and the performance of optical lens module is explained by minimizing the chromatic aberration of various wavelength. In addition, we reviewed the refractive index distribution of global leading group's optical glass, which is the most widely used in optical lens manufacturing, and the current status of optical glass technology development at KOPTI.
{"title":"Core characteristics and technology development status of optical glass materials for camera lenses","authors":"J. Choi, Yoon Hee Nam, Karam Han","doi":"10.31613/ceramist.2022.25.3.07","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.07","url":null,"abstract":"For core imaging technologies, various R&D for optical lens design have been carried out to realize highresolution images without distortion. The need for systematic analysis of the optical and physical properties of various materials and the correlation for optical lens design has increased. Therefore, core characteristics of visible optical glass material such as refractive index, dispersion value, transmittance, coefficient of thermal expansion, and striae were reviewed from the viewpoint of improving the performance of optical lenses. In this study, the correlation between the refractive index and dispersion value of the optical glass material and the performance of optical lens module is explained by minimizing the chromatic aberration of various wavelength. In addition, we reviewed the refractive index distribution of global leading group's optical glass, which is the most widely used in optical lens manufacturing, and the current status of optical glass technology development at KOPTI.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87784284","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}
Pub Date : 2022-09-30DOI: 10.31613/ceramist.2022.25.3.04
Jinju Lee, Hansol Lee, W. J. Chung
Soda-lime glass (SiO2-CaO-Na2O) has been widely used for various applications but suffered from weathering which is induced by the reaction between the atmospheric water and alkali or alkaline earth ions on the glass surface deteriorating the production value. In this study, composition of a commercial soda-lime glass was modified to improve its weathering resistance without significant change in its thermal properties for commercial production. Weathering resistance of the modified glasses were examined by exposing them to the condition of 85% relative humidity (RH) at 85℃ up to 20 days. Noticeable improvement of weathering resistance was observed when CaO and Na2O contents were replace by ZnO and K2O contents, respectively. Damaged glass surfaces due to weathering were observed with a field-emission scanning electron microscope(FE-SEM). Possible structural change of glass via compositional change was inspected by Raman spectroscopy. Thermal properties such as glass transition temperature and coefficient of thermal expansion were monitored and compared with those of the commercial reference glass.
{"title":"Improved Weathering Resistance of Commercial Soda-Lime Glass via Compositional Modification","authors":"Jinju Lee, Hansol Lee, W. J. Chung","doi":"10.31613/ceramist.2022.25.3.04","DOIUrl":"https://doi.org/10.31613/ceramist.2022.25.3.04","url":null,"abstract":"Soda-lime glass (SiO2-CaO-Na2O) has been widely used for various applications but suffered from weathering which is induced by the reaction between the atmospheric water and alkali or alkaline earth ions on the glass surface deteriorating the production value. In this study, composition of a commercial soda-lime glass was modified to improve its weathering resistance without significant change in its thermal properties for commercial production. Weathering resistance of the modified glasses were examined by exposing them to the condition of 85% relative humidity (RH) at 85℃ up to 20 days. Noticeable improvement of weathering resistance was observed when CaO and Na2O contents were replace by ZnO and K2O contents, respectively. Damaged glass surfaces due to weathering were observed with a field-emission scanning electron microscope(FE-SEM). Possible structural change of glass via compositional change was inspected by Raman spectroscopy. Thermal properties such as glass transition temperature and coefficient of thermal expansion were monitored and compared with those of the commercial reference glass.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91450453","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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