Pub Date : 2022-10-30DOI: 10.21608/tims.2022.168553.1006
Ahmed S. Alsaman, Ehab Salah, Ahmed A. Askalany, A. Farid, A. Zohir, M. S. Ahmed, I. El-Sheikh
{"title":"Operating Temperatures Effect on Adsorption Desalination System Powered by Solar Energy","authors":"Ahmed S. Alsaman, Ehab Salah, Ahmed A. Askalany, A. Farid, A. Zohir, M. S. Ahmed, I. El-Sheikh","doi":"10.21608/tims.2022.168553.1006","DOIUrl":"https://doi.org/10.21608/tims.2022.168553.1006","url":null,"abstract":"","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77905578","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 : 2022-09-01DOI: 10.21608/tims.2022.158162.1004
M. Morad, S. Mohamed, R. Aboushahba, M. Rashad
This work aims to prepare perovskite zinc stannate (ZnSnO 3 ) by the sol-gel method and to study the electrochemical properties. This performance improves by adding different percentages of naturally prepared activated carbon from pomegranate peels. ZnSnO 3 is considered an attractive cathode material for energy storage, which shows a specific capacitance of 115 F g -1 at 1 A g -1 , while the optimum added percentage of the activated carbon is 5%AC+95%ZnSnO 3 , which exhibits 312.5 F g -1 at the same current density, which considered about three times more than that of the ZnSnO 3 , with capacitance retention of 66% after 2000 cycles at the current density of 10 A g -1 . The practical hybrid device shows a specific capacitance value of 61.6 F g -1 at 1 A g -1 , the specific energy of 22 Wh kg -1, and specific power of 1077 W kg -1 with capacitance retention of 50% of the initial capacitance after 2000 cycles at a current density of 10 A g -1 . As a result, ZnSnO 3 and its composite with cheap and natural materials are considered promising supercapacitor electrodes. The Nyquist plots show a semicircle in the high-frequency region and a near-vertical line at low frequency. The near-vertical line in the low-frequency region indicates the good capacitive of the composite electrode.
采用溶胶-凝胶法制备钙钛矿锡酸锌(znsno3)，并对其电化学性能进行研究。通过添加不同百分比的石榴皮天然活性炭来提高这种性能。ZnSnO 3被认为是一个有吸引力的阴极材料能量储存,展示了一个特定的电容115 F 1 g 1 g 1,而活性炭的最佳添加比例是5% ac + 95% ZnSnO 3,展品312.5 F g 1在同一电流密度,这被认为是大约三倍的ZnSnO 3,与电容保留66%的2000次后10 g 1的电流密度。实际混合器件在1 a g -1时的比电容值为61.6 F g -1，比能量为22 Wh kg -1，比功率为1077 W kg -1，电流密度为10 a g -1，循环2000次后电容保持率为初始电容的50%。因此，znsno3及其与廉价和天然材料的复合材料被认为是有前途的超级电容器电极。奈奎斯特图在高频区呈半圆形，在低频区呈近似垂直线。低频区近似垂直线表明复合电极具有良好的电容性。
{"title":"Preparation of Perovskite-type ZnSnO3 nanoparticles and enhancing their behavior as a positive electrode for supercapacitor applications","authors":"M. Morad, S. Mohamed, R. Aboushahba, M. Rashad","doi":"10.21608/tims.2022.158162.1004","DOIUrl":"https://doi.org/10.21608/tims.2022.158162.1004","url":null,"abstract":"This work aims to prepare perovskite zinc stannate (ZnSnO 3 ) by the sol-gel method and to study the electrochemical properties. This performance improves by adding different percentages of naturally prepared activated carbon from pomegranate peels. ZnSnO 3 is considered an attractive cathode material for energy storage, which shows a specific capacitance of 115 F g -1 at 1 A g -1 , while the optimum added percentage of the activated carbon is 5%AC+95%ZnSnO 3 , which exhibits 312.5 F g -1 at the same current density, which considered about three times more than that of the ZnSnO 3 , with capacitance retention of 66% after 2000 cycles at the current density of 10 A g -1 . The practical hybrid device shows a specific capacitance value of 61.6 F g -1 at 1 A g -1 , the specific energy of 22 Wh kg -1, and specific power of 1077 W kg -1 with capacitance retention of 50% of the initial capacitance after 2000 cycles at a current density of 10 A g -1 . As a result, ZnSnO 3 and its composite with cheap and natural materials are considered promising supercapacitor electrodes. The Nyquist plots show a semicircle in the high-frequency region and a near-vertical line at low frequency. The near-vertical line in the low-frequency region indicates the good capacitive of the composite electrode.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87862955","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 : 2022-09-01DOI: 10.21608/tims.2022.147815.1003
M. Elsaid, A. Sayed, A. Ashmawy, Ahmed Hassan, A. Waheed, S. Mohamed
contribution of the ZnCo 2 S 4 /NF coral reef hierarchical architecture and the bimetallic sulfide with great valence states for rich redox reactions. Therefore, the nano coral reef ZnCo 2 S 4 /NF is promising electrode material for battery-type supercapacitors.
{"title":"Hierarchically Nanocoral Reefs-like ZnCo2S4 Deposited on Ni Foam as an Electrode Material for High-Performance Battery-type Symmetric Supercapacitor","authors":"M. Elsaid, A. Sayed, A. Ashmawy, Ahmed Hassan, A. Waheed, S. Mohamed","doi":"10.21608/tims.2022.147815.1003","DOIUrl":"https://doi.org/10.21608/tims.2022.147815.1003","url":null,"abstract":"contribution of the ZnCo 2 S 4 /NF coral reef hierarchical architecture and the bimetallic sulfide with great valence states for rich redox reactions. Therefore, the nano coral reef ZnCo 2 S 4 /NF is promising electrode material for battery-type supercapacitors.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89082250","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 : 2022-03-27DOI: 10.21608/tims.2022.120587.1002
I. Butorina, M. Butorina, D. Kuklin, A. Shashurin
{"title":"Innovative Approaches to Noise Reduction in Metallurgy","authors":"I. Butorina, M. Butorina, D. Kuklin, A. Shashurin","doi":"10.21608/tims.2022.120587.1002","DOIUrl":"https://doi.org/10.21608/tims.2022.120587.1002","url":null,"abstract":"","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"156 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86321824","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 : 2022-01-01DOI: 10.21608/tims.2022.208824
Anton G. Waheeb
{"title":"Tension Gashes Explore The Structural Deformation of Mineralized Shear Zone at Wadi Belih, Northern Eastern Desert, Egypt","authors":"Anton G. Waheeb","doi":"10.21608/tims.2022.208824","DOIUrl":"https://doi.org/10.21608/tims.2022.208824","url":null,"abstract":"","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81015957","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 : 2022-01-01DOI: 10.21608/tims.2022.208823
N. Gad, Anton G. Waheeb
{"title":"Geological, Mineralogical and Comparative Study of Biosorption for Uranium and Thorium Using Different Types of Algae at Wadi Dara Area, Northern Eastern Desert, Egypt.","authors":"N. Gad, Anton G. Waheeb","doi":"10.21608/tims.2022.208823","DOIUrl":"https://doi.org/10.21608/tims.2022.208823","url":null,"abstract":"","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77579673","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 : 2022-01-01DOI: 10.21608/tims.2022.208820
S. Khafagy, M. El-Shennawy
The investigation explains the influence of important variables of resistance joining process on the characteristics of spot welded joint between low carbon steel LCS with 0.6 mm thickness and stainless steel type 430, FSS with 0.5 mm thickness sheets. Variables investigated are electrode pressure, current, and time of welding. Mechanical and metallurgy l properties are measured through microstructure, shear tensile and hardness determination. It is shown that the effective electrode pressure in this combination of FSS and CS was 2 bar (0.2MPa). It is noted that the current of welding is the effective variable on weld properties. The highest strength of weld is achieved at 3.4 KA. Rising welding time and welding current up to certain limit raises the strength of spot welded joint, after this limit, the strength of welded joint reduces. The microstructure of nugget obtained is martensitic structure. The fracture of spot welded joint is characterized by intergranular fracture in side of ferritic stainless steel sheet and the fracture mode is button pullout. The highest values of micro hardness distribution are observed at locations where carbides precipitated beside nugget martensitic structure.
{"title":"Influence of Welding Variables on Resistance Welding of Dissimilar Metals Quality","authors":"S. Khafagy, M. El-Shennawy","doi":"10.21608/tims.2022.208820","DOIUrl":"https://doi.org/10.21608/tims.2022.208820","url":null,"abstract":"The investigation explains the influence of important variables of resistance joining process on the characteristics of spot welded joint between low carbon steel LCS with 0.6 mm thickness and stainless steel type 430, FSS with 0.5 mm thickness sheets. Variables investigated are electrode pressure, current, and time of welding. Mechanical and metallurgy l properties are measured through microstructure, shear tensile and hardness determination. It is shown that the effective electrode pressure in this combination of FSS and CS was 2 bar (0.2MPa). It is noted that the current of welding is the effective variable on weld properties. The highest strength of weld is achieved at 3.4 KA. Rising welding time and welding current up to certain limit raises the strength of spot welded joint, after this limit, the strength of welded joint reduces. The microstructure of nugget obtained is martensitic structure. The fracture of spot welded joint is characterized by intergranular fracture in side of ferritic stainless steel sheet and the fracture mode is button pullout. The highest values of micro hardness distribution are observed at locations where carbides precipitated beside nugget martensitic structure.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88924141","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 : 2022-01-01DOI: 10.21608/tims.2021.102029.1000
Saleh Mohamed El Hady, Samia Abdeldaym
{"title":"A Suggested Procedure for Chemical Processing of Beryl from Received Geological Sample, Eastern Desert, Egypt by Solvent Extraction Technique","authors":"Saleh Mohamed El Hady, Samia Abdeldaym","doi":"10.21608/tims.2021.102029.1000","DOIUrl":"https://doi.org/10.21608/tims.2021.102029.1000","url":null,"abstract":"","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89058475","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 : 2022-01-01DOI: 10.21608/tims.2022.208822
S. S. Abd Elmomen
{"title":"Thermodynamics of Sulphur Distribution between Slag and Hot Metal in Blast Furnace.","authors":"S. S. Abd Elmomen","doi":"10.21608/tims.2022.208822","DOIUrl":"https://doi.org/10.21608/tims.2022.208822","url":null,"abstract":"","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79373270","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 : 2021-08-01DOI: 10.21608/tims.2021.191207
A. El-tantawy, H. M. Yehia, Omayma A. Elkady, I. Ghayad
Titanium powder is reinforced with 12 wt. % molybdenum powder, and then the mixed Ti-12%Mo matrix composite powder is reinforced with 5, 10, and 15 wt. % nano Al2O3 by the mechanical milling for 24 hr. The mixed nano-composite powders were cold compacted under 600MPa, then sintered at 1450°C for 90 min. The microstructure and chemical composition of the Ti-12Mo/Al2O3 powders, as well as the fabricated composites, were investigated by both SEM and X-ray diffraction. It has been observed form the SEM studies of the sintered samples that the Al2O3 and Mo particles were homogeneously distributed all over the Ti matrix. All the composites were evaluated by measuring their density, hardness, and wear resistance. The results revealed that the addition of 12 wt. % Mo to pure titanium improves its density due to its high density over than that of the Ti and the good adhesion between them, while the addition of Al2O3 decreases the density of the Ti-12Mo nano-composite. Not only the density of the Ti was improved by the addition of Mo, but also the hardness and wear resistance were also increased. Regardless of the decreasing in the density of Ti-12Mo nano-composite by increasing the Al2O3 wt. %, the hardness and wear resistance were improved up to 5 wt. % Al2O3.
{"title":"Preparation and Characterization of Ti-12Mo/X Al2O3 Nano-Composites for Aerospace Applications","authors":"A. El-tantawy, H. M. Yehia, Omayma A. Elkady, I. Ghayad","doi":"10.21608/tims.2021.191207","DOIUrl":"https://doi.org/10.21608/tims.2021.191207","url":null,"abstract":"Titanium powder is reinforced with 12 wt. % molybdenum powder, and then the mixed Ti-12%Mo matrix composite powder is reinforced with 5, 10, and 15 wt. % nano Al2O3 by the mechanical milling for 24 hr. The mixed nano-composite powders were cold compacted under 600MPa, then sintered at 1450°C for 90 min. The microstructure and chemical composition of the Ti-12Mo/Al2O3 powders, as well as the fabricated composites, were investigated by both SEM and X-ray diffraction. It has been observed form the SEM studies of the sintered samples that the Al2O3 and Mo particles were homogeneously distributed all over the Ti matrix. All the composites were evaluated by measuring their density, hardness, and wear resistance. The results revealed that the addition of 12 wt. % Mo to pure titanium improves its density due to its high density over than that of the Ti and the good adhesion between them, while the addition of Al2O3 decreases the density of the Ti-12Mo nano-composite. Not only the density of the Ti was improved by the addition of Mo, but also the hardness and wear resistance were also increased. Regardless of the decreasing in the density of Ti-12Mo nano-composite by increasing the Al2O3 wt. %, the hardness and wear resistance were improved up to 5 wt. % Al2O3.","PeriodicalId":22390,"journal":{"name":"The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)","volume":"127 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75832153","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：