SYNTHESIS AND SOLID STATE SINTERING OF W-Ni-Fe NANO-COMPOSITE POWDERS
SYNTHESIS AND SOLID STATE SINTERING OF W-Ni-Fe NANO-COMPOSITE POWDERS
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W-Ni-Fe纳米复合粉末的合成与固态烧结
DOI：
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发表时间：
2009-10
影响因子：
2.3
通讯作者：
Qu Xuanhui,Fan Jingliang等
中科院分区：
文献类型：
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作者：
Qu Xuanhui,Fan Jingliang等
在行星式高能球磨机中对90%W、7wt%Ni和3wt%Fe元素粉末的混合物进行球磨。测试了球磨过程中粉末的结构演变和烧结行为。结果表明，通过机械合金化，W（Ni，Fe）形成了纳米尺寸的过饱和固溶体，从而促进了烧结过程。将研磨后的粉末通过固态烧结获得了相当致密的合金。所得合金的抗拉强度超过900MPa，与相同成分的未球磨粉末经传统液相烧结得到的合金相当。
The mixture of 90%W 7wt%Ni and 3wt%Fe elemental powders was milled in a planetary high-enerpy ball mill. The evolution of the structure during milling and the sintering behavior Of the milled powders were tested. The results showed that by mechanical alloying W(Ni, Fe) supersatumted solid solution with nano-meter size formed, which can enhance the sintering process. Ftilly dense alloy from the milled powders was obtained through solid state sintering. The tensile strength of the obtained alloy is over 900MPa which is comparuble to that of the alloy sintered by traditional liquid-phase sintering from un-milled powders of the same composition.