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
杨秦莉 1赵虎 1厉学武 1崔玉青 1庄飞 1杜一辰 1高贤1
作者信息
- 1. 金堆城钼业股份有限公司技术中心,陕西 西安 710077;陕西省先进钼冶金技术重点实验室,陕西 西安 710077;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
- 折叠
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MoO3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MoO2、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MoO2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.
Abstract
In the process of powder metallurgy rolling plate,the original powder particles have a very important im-pact on the process characteristics of reduction,sintering and rolling plate and the mechanical properties of molyb-denum plate.Three kinds of high purity MoO3 with different particle sizes were reduced,sintered and rolled molyb-denum plate with 0.5mm thickness.The effects of three different particle sizes of raw powder on the preparation process properties of MoO2,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 MoO2 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 per-formance of molybdenum plate made by reduction and sintering of large size molybdenum trioxide by the same sinte-ring and rolling is better;the mechanical properties of 0.5 mm molybdenum plate which was made of small size mo-lybdenum 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Key words
molybdenum trioxide/particle size/reduction/molybdenum plate/performance引用本文复制引用
基金项目
陕西省重点研发计划(2021LLRH-05-05)
陕西省重点研发计划(2021LLRH-05-06)
陕西省重点研发计划(2021LLRH-05-07)
出版年
2024
国家科技期刊平台
NSTL
万方数据