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有色金属工程:2020,(10):47-52
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微量CeO2掺杂对钼合金性能的影响
刘东新1, 安耿1, 刘仁智1, 李晶1, 陈璇2, 杨程2
(1.金堆城钼业股份有限公司 技术中心;2.西安建筑科技大学 冶金工程学院)
Effect of Trace CeO2 Miscellaneous on Mechanical Performance of Molybdenum Alloys
Liu Dongxin1, An Geng1, Liu Renzhi1, Li Jing1, Chen Xuan2, Yang Cheng2
(1.Technical Center,Jinduicheng Molybdenum Co,Ltd,Xi’an Shaanxi;2.Xi’an University of Architecture and Technology,Xi’an)
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投稿时间:2020-07-21    修订日期:2020-08-01
中文摘要: 通过固-液喷雾掺杂技术和粉末冶金方法制备MoCe合金,采用ICP、SEM、万能试验机等手段测定合金粉化学成分、合金断裂特征和组织结构,研究不同含量稀土氧化物CeO2对钼合金性能的影响。结果表明,MoCe合金烧结密度随着CeO2掺杂量的增加而增加,且合金的密度均在9.80 g/cm3以上。CeO2掺杂量少于0.3%时,烧结棒的晶粒尺寸随着CeO2掺杂量的增加而减小;CeO2掺杂量高于0.3%时,晶粒尺寸未发生明显变化。?1.8 mm MoCe合金丝的室温强度和延伸率较纯钼丝有显著提高,CeO2掺杂量在0.3%时达到最大值,且室温拉伸断口呈现出典型的韧窝断口形貌。
Abstract:MoCe alloys were prepared by solid-liquid spray doping technology and powder metallurgy method. ICP, SEM, universal testing machine and other means were used to determine the chemical composition of the alloy powder, the fracture characteristics and microstructure of the alloy, and to study the influence of different contents of rare earth oxide CeO2 on the performance of molybdenum alloy. The results show that the sintering density of MoCe alloy increases with the increase of cerium oxide content, and the density of the alloy is all above 9.80 g/cm3. When the doping amount of CeO2 is less than 0.3%, the grain size of sintered rod decreases with the increase of CeO2 content. When the doping amount of CeO2 is higher than 0.3%, the grain size does not change significantly. ? 1.8 mm MoCe wire room temperature strength and elongation than pure molybdenum wire has increased significantly, peaked when CeO2 content in 0.3%, and the tensile fracture at present a typical ductile fracture morphology.
文章编号:     中图分类号:TF124    文献标志码:
基金项目:陕西省重点研发计划项目(2018ZDXM-GY-120 );西安市科技局科技创新引导项目(201805033YD11CG17)
引用文本:
刘东新,安耿,刘仁智,李晶,陈璇,杨程.微量CeO2掺杂对钼合金性能的影响[J].有色金属工程,2020,(10):47-52.

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