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浅谈电解铝液直接铸造铝合金圆锭发展趋势 浅谈电解铝液直接铸造铝合金圆锭发展趋势
Research and Application of Materials Science Pub Date : 2019-07-22 DOI: 10.33142/msra.v1i1.1285
志强 应
{"title":"浅谈电解铝液直接铸造铝合金圆锭发展趋势","authors":"志强 应","doi":"10.33142/msra.v1i1.1285","DOIUrl":"https://doi.org/10.33142/msra.v1i1.1285","url":null,"abstract":"分析电解铝液特点以及生产中使用固体料的情形，结合相关实践经验，探讨了炉料添加顺序和电解铝液的转注方式、固液比的选择、熔体的预精炼和精炼方法、晶粒细化剂添加方法、在线除气及除渣方法等,就铝合金圆铸锭为例展开研究。","PeriodicalId":21005,"journal":{"name":"Research and Application of Materials Science","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87848705","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}
引用次数: 0
Fabrication and Growing Kinetics of Highly Dispersed Gadolinium Zirconate Nanoparticles 高分散锆酸钆纳米颗粒的制备及生长动力学
Research and Application of Materials Science Pub Date : 2019-07-22 DOI: 10.33142/msra.v1i1.670
Renbo Zhu, J. Zou, J. Mao, Xiaofeng Zhang, C. Deng, Min Liu, Wenlong Chen
{"title":"Fabrication and Growing Kinetics of Highly Dispersed Gadolinium Zirconate Nanoparticles","authors":"Renbo Zhu, J. Zou, J. Mao, Xiaofeng Zhang, C. Deng, Min Liu, Wenlong Chen","doi":"10.33142/msra.v1i1.670","DOIUrl":"https://doi.org/10.33142/msra.v1i1.670","url":null,"abstract":"Highly dispersed gadolinium zirconate (GZ) nanoparticles with fluorite structure were successfully synthesized by co-precipitation method, and their phase composition and microstructure, formation mechanism, and grain growth kinetics were investigated. The results suggest that the nanoparticles were obtained through hydroxide dehydration and solid phase reaction. High dispersion was accomplished by ethanol solvent to reduce the hydrogen bond and sodium dodecyl benzene sulfonate (SDBS) surfactant to increase the electrostatic repulsion between the nanoparticles. The grain growth activation energy of GZ powders calcined at lower temperature (< 1200 °C) is 86.5 kJ/mol (Ql ), and the grain growth activation energy of GZ powders calcined at higher temperature (> 1200 °C) is 148.4 kJ/mol (Qh ). The current study shows that the optimal process to synthesize dispersed GZ nanoparticles includes ethanol solvent, 3 wt.% SDBS surfactant, and 1100 °C as calcining temperature.","PeriodicalId":21005,"journal":{"name":"Research and Application of Materials Science","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76826120","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}
引用次数: 5
One Novel Zn(II) Nitro-containing Metal Organic Framework for Dye- Adsorption and Photo Degradation 一种新型含Zn(II)硝基的染料吸附与光降解金属有机骨架
Research and Application of Materials Science Pub Date : 2019-07-22 DOI: 10.33142/MSRA.V1I1.672
Weiqi Li, Xieao Du, Haiyan He
{"title":"One Novel Zn(II) Nitro-containing Metal Organic Framework for Dye- Adsorption and Photo Degradation","authors":"Weiqi Li, Xieao Du, Haiyan He","doi":"10.33142/MSRA.V1I1.672","DOIUrl":"https://doi.org/10.33142/MSRA.V1I1.672","url":null,"abstract":"A novel metal-organic framework [Zn0.5(L1)(4,4'-Bpy)0.5], (HU21, HU for Hohai University, L1 = 4-hydroxy-3-nitrobenzoic acid, 4,4'-bipyridine = 4,4'-Bpy), has been isolated through hydrothermal reaction. Single-crystal X-ray diffraction reveals the compound features a 1D fishbone-like chain. A fast adsorption rate of methylene blue with HU21 was observed in the dark, but under irritation the degradation rate of the dye was obviously increased. The degradation of methylene blue dye reached 248 mg/g under light irritation, and the photocatalytic activity reached 96.1%.","PeriodicalId":21005,"journal":{"name":"Research and Application of Materials Science","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77523968","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}
引用次数: 1
Construction of MnO2 Nanowire for a High-Performance Lithium Ion Supercapacitor 高性能锂离子超级电容器用二氧化锰纳米线的构建
Research and Application of Materials Science Pub Date : 2019-07-22 DOI: 10.33142/MSRA.V1I1.668
Wenbo Wang, Yanhong Shi, Yangfen Su, Yihai Wang, Haizhu Sun
{"title":"Construction of MnO2 Nanowire for a High-Performance Lithium Ion Supercapacitor","authors":"Wenbo Wang, Yanhong Shi, Yangfen Su, Yihai Wang, Haizhu Sun","doi":"10.33142/MSRA.V1I1.668","DOIUrl":"https://doi.org/10.33142/MSRA.V1I1.668","url":null,"abstract":"Developing lithium ion capacitors possessing both brilliant energy and power density is still significant for numerous re-searchers. In this paper, we synthesized MnO2 nanowires via a simple hydrothermal process. The nanostructure MnO2 can expose more electrochemical sites and thus optimize the kinetics of Li+. Moreover, we used MnO2 nanowires (MnO2 NWs) as anode and a N-doped porous carbon (NPC) as cathode to assemble lithium ion capacitors (MnO2 NWs//NPC LIC). Compared to the traditional supercapacitor with aqueous electrolyte, the MnO2 NWs//NPC LIC exhibits a wider voltage of 0-4.2 V, which is helpful to enhance its energy and power density. Furthermore, MnO2 NWs//NPC LIC can deliver an excellent capacity of 150 mAh g-1 with an excellent energy density of 82.7 Wh kg-1 and power density of 1.05 kW kg-1. Meanwhile, a good cyclic stability of LICs with a 20% retention after 1000 times charge and discharge process proves its practical potential, indicating a good promising for the application in storage devices.","PeriodicalId":21005,"journal":{"name":"Research and Application of Materials Science","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88460195","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}
引用次数: 2
7H3A铝合金空心型材的热处理工艺研究 7H3A铝合金空心型材的热处理工艺研究
Research and Application of Materials Science Pub Date : 2019-07-22 DOI: 10.33142/msra.v1i1.1282
鑫 谭, 芬 徐, 高用 林
{"title":"7H3A铝合金空心型材的热处理工艺研究","authors":"鑫 谭, 芬 徐, 高用 林","doi":"10.33142/msra.v1i1.1282","DOIUrl":"https://doi.org/10.33142/msra.v1i1.1282","url":null,"abstract":"7H3A铝合金是国内某企业自主研发的一种中强可焊Al-Zn-Mg合金，可实现分流挤压与在线淬火。本文采用正交实验方法探讨该合金空心型材的热处理工艺，结果表明，该合金挤压型材经在线淬火加195℃×2.5 h人工时效后，抗拉强度、延伸率和硬度分别为462.17 MPa、13.18%、147.7 HV；经520℃×60 min离线固溶+水淬+175℃×8 h人工时效后，抗拉强度，延伸率和硬度分别为506.39 MPa、10.50%、173.2 HV。","PeriodicalId":21005,"journal":{"name":"Research and Application of Materials Science","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82010860","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}
引用次数: 0
铝合金模锻件的工艺结构要素与锻模设计 铝合金模锻件的工艺结构要素与锻模设计
Research and Application of Materials Science Pub Date : 2019-07-22 DOI: 10.33142/msra.v1i1.1284
静安 刘, 煜 刘, 奇敏 龙
{"title":"铝合金模锻件的工艺结构要素与锻模设计","authors":"静安 刘, 煜 刘, 奇敏 龙","doi":"10.33142/msra.v1i1.1284","DOIUrl":"https://doi.org/10.33142/msra.v1i1.1284","url":null,"abstract":"铝合金模锻件作为机械零件的重要毛坯，只有精确地设计出各工艺结构要素才能保证加工出符合尺寸和形状及组织性能要求的零件来，而且应出模方便，操作方便，操作简单，可见，模锻件的个工艺结构的选择是十分重要的，可见，模锻件的各工艺结构的选择是十分重要的。在模锻件的基础上，加上收缩量和毛边槽而成的的锻模是生产模锻件的重要工具。对于复杂的大型铝合金锻件模锻件还要考虑预锻模和毛坯模，毛坯模、预锻模和终锻模三者之间的互相配合和协调是生产合格的精密优质模锻件的关键技术之一。","PeriodicalId":21005,"journal":{"name":"Research and Application of Materials Science","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76696533","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}
引用次数: 0
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