Achieving high transverse rupture strength of WC-8Co hardmetals through forming plate-like WC grains by plasma assisted milling
Achieving high transverse rupture strength of WC-8Co hardmetals through forming plate-like WC grains by plasma assisted milling
复制标题
通过等离子辅助铣削形成板状 WC 晶粒，实现 WC-8Co 硬质合金的高横向断裂强度
DOI：
10.1016/j.matchemphys.2017.01.010
复制
发表时间：
2017-04
影响因子：
4.6
通讯作者：
Zhu Min
中科院分区：
文献类型：
--
作者：
Wang Wei;Lu Zhongchen;Zeng Meiqin;Bao Xianyong;Zhu Min
采用介质阻挡放电等离子体辅助球磨（DBDP-milling）技术制备了W-C-8 Co元素粉末，通过烧结分别制备了柱状和板状WC颗粒的WC-8 Co硬质合金。结果表明，DBDP球磨时间对烧结硬质合金的显微组织、硬度和抗弯强度有影响，且与球磨钨的形貌和尺寸有关。当以不同粒度的W为原料时，DBDP-1h球磨的含W颗粒的W-C-Co粉末易形成相应尺寸的棱柱形WC颗粒。而DBDP-3 h球磨粉末中含有片状W片，当W原料粒度不同时，W片生成具有不同择优取向度的板状WC晶粒。与三棱柱状WC相比，在硬质合金中选择合适的板状WC择优取向度，有利于在保持良好硬度的同时提高TRS。
WC-8Co hardmetals with prismatic WC grains and plate-like WC grains were respectively produced through sintering the W-C-8Co elemental powder mixture, prepared by dielectric barrier discharge plasma assisted milling (denoted as DBDP-milling). The results show that the microstructure, hardness and transverse rupture strength (TRS) of the sintered hardmetals are related to the morphology and size of milled W, which is dependent on the DBDP-milling time. When using W of different particle sizes as raw materials, prismatic WC grains of corresponded different size tend to form in the DBDP-1h milled W-C-Co powders contain granular W particles. While the DBDP-3h milled powders contains flake-like W flakelets that generate plate-like WC grains with different degree of preferential orientation when the size of raw W materials are different. Compared with triangular prismatic WC, a suitable range of the degree of preferential orientated plate-like WC in hardmetals has the advantage for improving the TRS while maintaining excellent hardness.
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DOI：
10.1179/imtr.1979.24.1.149
发表时间：
1979-01
期刊：
International Metals Reviews
影响因子：
--
作者：
H. Exner
通讯作者：
H. Exner
影响因子：
5.2
作者：
Al-Aqeeli, N.;Mohammad, K.;Saheb, N.
通讯作者：
Saheb, N.
影响因子：
4.5
作者：
A. Mukhopadhyay;B. Basu
通讯作者：
A. Mukhopadhyay;B. Basu
影响因子：
6.2
作者：
Zhenye Zhao;Jianwei Liu;Huaguo Tang;Xianfeng Ma;Wei Zhao
通讯作者：
Zhenye Zhao;Jianwei Liu;Huaguo Tang;Xianfeng Ma;Wei Zhao
DOI：
10.1016/j.jeurceramsoc.2009.09.013
发表时间：
2010-02-01
影响因子：
5.7
作者：
Kang, Youngjae;Kang, Shinhoo
通讯作者：
Kang, Shinhoo