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, and inhomogeneous grain growth which is a very vexing problem in cemented carbide with ultrafine or nano tungsten carbide as starting material during the early-stage densification was suppressed by the addition... below the eutectic temperature are fine and homogenously distributed. Abnormal grain growth which is a very vexing problem in cemented carbide with ultrafine or nano tungsten carbide as starting......
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Phase Analysis of Cemented Carbide WC-Co Boronised with Yttrium 刘寿荣1,郝建民2,褚连青2,宋俊亭1 (1.Tianjin Institute of Cemented Alloy, Tianjin 300222, China;2.Tianjin Institute of Electronic Material, Tianjin... earths; cemented carbide WC-Co; vacuum-sintering; rare earth-boronization; [全文内容正在添加中] ......
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, corresponding to the grain size of 160 nm and the micro-hardness of 2.150 GPa. Key words: nano-grained cemented carbide; grain growth inhibitor; vacuum sintering; densification 纳米晶硬质合金的强度和硬度高....[4]马学鸣, 赵凌, 董远达. 机械合金化制备纳米硬质合金[J]. 上海大学学报, 1998, 4(2):156-159.MA Xue-ming, ZHAO Ling, DONG Yuan-da. The fabrication of nano-grained cemented carbides through mechanical alloying[J]. Journal......
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Brazing behavior of ultrafine cemented carbide with stainless steelYANG Tian-en(杨天恩), YANG Li(杨力), XIONG Ji(熊计), SUN Lan(孙兰), GUO Zhi-xing(郭智兴), ZHENG Xiao-ming(郑晓鸣) (School of Manufacturing Science... saturation and coercivity of the ultrafine cemented carbide, the ultrafine cemented carbide was fabricated according to conventional powder metallurgical procedures, and then brazed to the stainless......
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sintering for 60 min at 1 400 ℃, the average grain size and hardness of ultrafine-grained WC-10Co-1VC cemented carbide are 470 nm and HRA 91.5, respectively. The fracture toughness of cemented carbide... to investigate the influence of VC and NbC addition on WC grain growth in nano-grained WC-10Co cemented carbides and to measure the resulting hardness and toughness of WC-Co hardmetals. NbC is selected due to its......