铱的合金化改性研究现状  

Research Status of Alloying Modification of Iridium

作　　者：艾园林 白书欣[1] 朱利安[1] 叶益聪[1] 张虹[1] 张楷力 唐宇[1] 王睿鑫 AI Yuanlin, BAI Shuxin, ZHU Li’an, YE Yicong, ZHANG Hong, ZHANG Kaili,TANG Yu, WANG Ruixin(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 41007)

机构地区：[1]国防科技大学空天科学学院,长沙410073

出　　处：《材料导报》2018年第A01期405-409,共5页Materials Reports

基　　金：国家自然科学基金(51501224;E011002)

摘　　要：铱具有极高的熔点、优异的高温强度以及极佳的抗氧渗透性能,通过合金化改性得到的二元铱合金的综合性能较纯铱已有显著提升。不同二元铱合金体系具有突出的高温抗氧化性能、高温力学性能或抗电弧烧损性能,被应用于高温抗氧化材料、高温结构材料、贵金属电接触材料等领域。为进一步提升性能、降低成本,在二元铱合金基础上发展出的多元铱合金充分发挥出添加元素的晶粒细化强化、弥散强化、阻挡保护等作用,展现出令人满意的成果,极具发展潜力和可设计性。Iridium has high melting point,excellent strength and quite low oxygen permeability at high temperature.Compared with pure iridium,the comprehensive performance of the binary iridium alloys obtained by alloying modification is obviously improved.Various binary iridium alloys have been applied in the fields of high-temperature oxidation resistant materials,high-temperature structural materials and noble metal electric contact materials due to their unique performances.In order to improve the performance and reduce the cost,multi-component iridium alloys,with great development potential and designability,were developed and showed satisfied results,due to the effects of grain refinement strengthening,dispersion strengthening,barrier and protection of the surface oxide.

关 键 词：铱合金 高温抗氧化材料 高温结构材料 贵金属电接触材料 

分 类 号：TB31[一般工业技术—材料科学与工程]