高纯三氧化钼粒度对粉末冶金钼板工艺特性与力学性能影响  

Effect of the Particle Size of High Purity Molybdenum Trioxide on Metallurgical Characteristics and Mechanical Properties of Powder Metallurgy Molybdenum Plate

作　　者：杨秦莉[1,2,3] 赵虎 厉学武[1,2,3] 崔玉青 庄飞[1,2,3] 杜一辰 高贤[1,2,3] YANG Qinli;ZHAO Hu;LI Xuewu;CUI Yuqing;ZHUANG Fei;DU Yichen;GAO Xian(Technical Center,Jinduicheng Molybdenum Co.,Ltd.,Xi′an 710077,Shaanxi,China;Key Laboratory of Advanced Molybdenum Metallurgy of Shaanxi Province,Xi′an 710077,Shaanxi,China;Shaanxi“Four Bodies and One Union”University-Enterprise Joint Research Center,Xi′an 710077,Shaanxi,China)

机构地区：[1]金堆城钼业股份有限公司技术中心,陕西西安710077 [2]陕西省先进钼冶金技术重点实验室,陕西西安710077 [3]陕西省四主体一联合含钼冶金技术重点实验室,陕西西安710077

出　　处：《中国钼业》2024年第1期35-39,共5页China Molybdenum Industry

基　　金：陕西省重点研发计划(2021LLRH-05-05,2021LLRH-05-06,2021LLRH-05-07)。

摘　　要：粉末冶金轧制制板工艺中,原始粉末颗粒对还原、烧结和轧板工艺特性以及钼板力学性能有着非常重要的影响。采用3种不同粒度高纯MoO_(3)进行还原、烧结和轧制制备0.5 mm厚的钼板试验,研究了3种不同粒度原始粉末颗粒对MoO_(2)、钼粉以及钼板制备工艺性能和终板力学性能的影响。结果表明:经一段还原制备的3种MoO_(2)还原程度及微观形貌差异较大;二段不同还原工艺制备的钼粉指标也不同,大粒度钼粉的D50、D90/D50值都比小粒度钼粉的低,且团聚少,均匀分散;相同烧结、轧制工艺条件下,大粒度三氧化钼经还原、烧结制成的钼板坯性能较好;小粒度三氧化钼经950℃还原及后续加工制成的0.5 mm钼板力学性能较好。In the process of powder metallurgy rolling plate,the original powder particles have a very important impact on the process characteristics of reduction,sintering and rolling plate and the mechanical properties of molybdenum plate.Three kinds of high purity MoO_(3)with different particle sizes were reduced,sintered and rolled molybdenum plate with 0.5mm thickness.The effects of three different particle sizes of raw powder on the preparation process properties of MoO_(2),molybdenum powder,molybdenum plate and mechanical properties of end plate were studied.The results showed that the reduction degree and micro-morphology of the three MoO_(2)prepared by one-stage reduction were significant different;the indexes of molybdenum powder prepared by different reduction processes in the second stage are also different.The D50 and D90/D50 values of large-particle molybdenum powder are lower than those of small-particle molybdenum powder,with less agglomeration and uniform dispersion;the performance of molybdenum plate made by reduction and sintering of large size molybdenum trioxide by the same sintering and rolling is better;the mechanical properties of 0.5 mm molybdenum plate which was made of small size molybdenum trioxide by reduction at 950℃and subsequent processing are better.

关 键 词：三氧化钼 粒度 还原 钼板 性能 

分 类 号：TG146.412[一般工业技术—材料科学与工程]