Molecular dynamics study of the melting point for refractory metals (Vanadium,Niobium, and Tantalum);
分子动力学研究难熔金属(V、Nb和Ta)熔点
This paper reviews the conventional fused salt electrolysis process for production of refractory metals and analyzes its shortages: conventional electrolysis has strict demands for electrolyte, which leads failure in production of refractory metals with conventional electrolysis.
介绍了传统的熔盐电解法用于难熔金属制备的应用现状,分析了其存在的弊病:主要是传统熔盐电解法对电解质要求严格,难以找到合适的熔盐。
The present status of research and application of ultra-high temperature materials such as refractory metals,ceramic matrix composites and carbon/carbon composites were summarized.
综述了难熔金属、陶瓷基复合材料及炭-炭复合材料等超高温材料的研究和应用现状,分析了目前存在的问题,提出了今后的研究方向。
07%, when the total amount of refractory elements Cr, Mo, W, Nb, and Hf (atomicfraction,%), the content of (Mo+W) and the ratio of Mo/(Mo+W) exceed 11%, 8% and 0.
０７％（质量分数）的铸造镍基高温合金中，当难熔元素Ｃｒ，Ｍｏ，Ｗ，Ｎｂ，Ｈｆ总量超过１１％（原子分数），（Ｗ＋Ｍｏ）超过８％（原子分数），Ｍｏ（原子分数）／（Ｗ＋Ｍｏ）（原子分数）超过０。
In this paper,the vaporization behaviors of refractory elements (Boron,Chromium,Molybdenum and Silicon)in graphite furnace ETV-ICP-AES have been investigated,and a polytetrafluoroethylene slurry was used as chemical modifier to improve the vaporization of the refractory elements.
研究了难熔元素硼、铬、钼和硅在石墨炉电热蒸发进样──ＩＣＰ－ＡＥＳ中的蒸发行为，探讨了以聚四氟乙烯为氟化剂改善难熔元素蒸发的方法。
The mobility of six kinds of refractory elements for dacite weathering profile in Jiaonong, Guangxi were studied.
对广西凭祥叫弄英安岩风化剖面中 6个难熔元素的活动性进行了研究。
The Research of the Growth and Control System of Refractory Metal Based on the Floating Zone-Melting Method;
基于悬浮区熔技术的难熔金属生长控制系统研究
The application and development of the refractory metals and alloys are reviewed.
难熔金属及合金以其优异的性能在航空航天、电子信息、能源、化工、冶金和核工业等国防及民用领域有着不可替代的作用,其发展日益受到高度重视。
Vacuum vertical sinter furnace is an important equipment to prepare such refractory metals as Ta,Ni,W and Mo through powder metallurgy.
真空垂熔烧结炉是粉末冶金法制取是金属钽、铌、钨、钼等难熔金属的主要设备,本文介绍了1000 kW真空垂熔烧结炉的设计和特点。