High-pressure sintering the novel light (W_0.25Al_0.75)C hard material without binder phase

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• 作者：Zhuhui Qiao ; Xianfeng Ma ; Wei Zhao ; Huaguo Tang
• 关键词：Novel (W_0.25Al_0.75)C hard material ; Mechanical properties ; Microstructure ; High-pressure sintering ; Density
• 刊名：Journal of Alloys and Compounds
• 出版年：2009
• 出版时间：20 March 2009
• 年：2009
• 卷：472
• 期：1-2
• 页码：211-213
• 全文大小：636 K

文摘

A novel hard material of (W_0.25Al₇₅)C has been successfully prepared by the high-pressure sintering process without the addition of any binder phase. The high-pressure is a suitable and powerful technique for sintering the binderless hard material, the relative density of the hard material can reach 99.6 % under high-pressure sintering. The density of the novel light hard material is only 6.2371 g cm⁻³, which is much lighter than the normal hard material. The hardness of the light hard material can reach 18.89 GPa even the aluminum content get the astonished 75 % .