操齐高,赵盘巢,戎 万,易 伟.喷雾干燥法制备钼合金微粉的研究[J].稀有金属材料与工程,2020,49(10):3627~3632.[Cao Qigao,Zhao Panchao,Rong Wan,Yi Wei.Preparation of Molybdenum Alloys Micropowder via Spray Drying[J].Rare Metal Materials and Engineering,2020,49(10):3627~3632.]
喷雾干燥法制备钼合金微粉的研究
投稿时间:2019-11-13  修订日期:2019-11-29
中文关键词:  钼合金  喷雾干燥  微米级  合金粉
基金项目:陕西省青年科技新星项目(2018KJXX-055);稀贵金属综合利用新技术国家重点实验室开放课题资助(SKL-SPM-2018011)
中文摘要:
      钼合金的制备过程广泛采用原料粉末混匀、坯料压制、烧结成型的粉末冶金方法,因此原料粉末混合的均匀程度、纯度、粉末粒径和形貌对钼合金制品的性能有重要影响。本文采用溶液喷雾干燥法制备前驱体粉末,再将前驱体粉末在氢气气氛下进行高温还原制备钼钨合金粉和钼钌镍复合粉,研究了喷雾干燥工艺参数(溶液浓度、进料速度、干燥温度等)和还原热处理工艺参数(还原气氛、温度、时间等)对钼合金微粉粒径、成分和形貌的影响,此外还分析了钼钨合金化和钼钌镍复合粉钎焊性能。结果表明,采用溶液喷雾干燥结合还原热处理工艺,可获得粒径0.5~3μm的球形钼钨固溶体合金粉和0.5~2μm的球形钼钌镍复合粉,且钼钌镍复合粉在钼板上钎焊时具有优异的润湿性。
Preparation of Molybdenum Alloys Micropowder via Spray Drying
英文关键词:Molybdenum alloy  spray drying  micron  alloy powder
英文摘要:
      The powder metallurgy method of raw material powder mixing, billet pressing and sintering molding is widely used in the preparation process of molybdenum alloys. Therefore, the uniformity, purity, powder size and morphology of the raw material powder have an important influence on the properties of the molybdenum alloy product. In this paper, the precursor powder was prepared by solution spray drying, and the precursor powder was reduced to molybdenum-tungsten alloy powder or molybdenum-niobium-nickel composite powder by high temperature reduction under hydrogen atmosphere. They were studied that the effects of the spray drying process parameters (solution concentration, feed rate, drying temperature, etc) and reduction heat treatment process parameters (reduction atmosphere, temperature, time, etc.) on the particle size, composition and morphology of molybdenum alloy micropowder. Furthermore, the brazing property of molybdenum-niobium-nickel composite powder was analyzed. The result show that spherical molybdenum-tungsten solid solution alloy powder with the particle size of 0.5~3μm and spherical molybdenum-niobium-nickel composite powder with the particle size of 0.5~2μm can be obtained by solution spray drying combined with reduction heat treatment. Molybdenum-niobium-nickel composite powder has excellent wettability when it was brazed on molybdenum plate.
作者单位E-mail
操齐高 西北有色金属研究院 caoqigao@c-nin.com 
赵盘巢 西北有色金属研究院  
戎 万 西北有色金属研究院  
易 伟 昆明贵金属研究所  
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