A novel (W–Al)–C–Co composite cemented carbide prepared by mechanical alloying and hot-pressing sintering

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• 作者：Zhuhui Qiao ; Xianfeng Ma ; Wei Zhao ; Huaguo Tang ; Shuguang Cai ; Bo Zhao
• 关键词：Novel cemented hard alloy ; Mechanical alloying ; Hot-pressing sintering ; Mechanical properties ; η ; -phase
• 刊名：International Journal of Refractory Metals and Hard Materials
• 出版年：2008
• 出版时间：May 2008
• 年：2008
• 卷：26
• 期：3
• 页码：251-255
• 全文大小：521 K

文摘

Novel cemented carbides (W_0.4Al_0.6)C_0.5–Co with different cobalt contents were prepared by mechanical alloying and hot-pressing technique. Hot-pressing technique as a common technique was performed to fabricate the bulk bodies of the hard alloys. The novel cemented carbides have good mechanical properties compared with WC–Co. The density and operation cost of the novel material were much lower than the WC–Co system. It was easy to process submicroscale sintering with the novel materials and obtain the rounded particles in the bulk materials. There is almost no η-phase in the (W_0.4Al_0.6)C_0.5–Co cemented carbides system although the carbon deficient obtains the astonishing value of 50 % .