Fabrication of fine grained molybdenum by fast resistance sintering under ultra-high pressure

Fabrication of fine grained molybdenum by fast resistance sintering under ultra-high pressure
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超高压快速电阻烧结制备细晶钼

DOI:
10.1016/j.jallcom.2018.12.202
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发表时间:
2019-04
影响因子:
6.2
通讯作者:
Juan Du
Juan Du
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhangjian Zhou;Nan Deng;Hui Wang;Juan Du

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提出了一种新的快速电阻烧结方法,制备了晶粒细小、烧结密度高的纯钼块体材料。在不添加任何烧结添加剂和晶粒长大抑制剂的情况下,在9000 MPa的超高压下,1300 °C烧结60 s,成功地制备了密度大于98.5%、晶粒尺寸小于2 μm的纯钼压坯。研究了烧结压力、输入功率、烧结时间等工艺参数与材料显微组织、基本力学性能的关系。
A novel fast resistance sintering method has been developed to fabricate pure Mo bulk material with fine grain size and high sinter density. A pure Mo compact with more than 98.5% theoretical density and grain size less than 2 μm has been successfully fabricated without any sintering additive or grain growth inhibitor under ultra-high pressure of 9000 MPa, sintering temperature of 1300 °C for only 60 s. The relationships between microstructure, basic mechanical property and processing parameters, including pressure, input power and sintering time, were investigated.
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