Ni含量对化学镀结合粉末冶金法制备的WC-Ni复合材料组织和性能的影响（英文）

发布时间：2018-02-04 18:44

本文关键词： WC-Ni复合材料化学镀粉末冶金　出处：《稀有金属材料与工程》2017年10期 　论文类型：期刊论文

【摘要】：采用简化预处理辅助化学镀法制备了WC-Ni复合粉体,结合压制烧结法获得了不同Ni含量的WC-Ni复合材料。通过FESEM,EDS和XRD检测手段分析了原始WC粉、WC-Ni复合粉体形貌和WC-Ni复合材料的表面形貌和断口特征。研究了不同Ni含量对WC-Ni复合材料组织和性能的影响规律。结果表明,Ni颗粒均匀包覆在WC粉体表面,WC-Ni复合材料具有细小均匀的晶粒分布;随着Ni含量的增加,WC-Ni复合材料的抗弯强度增加,硬度基本保持不变,断口形貌表现出穿晶断裂特征。
[Abstract]:WC-Ni composite powders were prepared by simplified pretreatment assisted electroless plating, and WC-Ni composites with different Ni content were obtained by pressing sintering method. FESEM was used. The original WC powder was analyzed by EDS and XRD. The morphology of WC-Ni composite powder and the surface morphology and fracture characteristics of WC-Ni composite were studied. The effect of Ni content on the microstructure and properties of WC-Ni composite was studied. The uniform coating of Ni particles on WC powder surface shows fine and uniform grain distribution of WC-Ni composite. With the increase of Ni content, the flexural strength of WC-Ni composites increases, the hardness remains unchanged, and the fracture morphology shows transgranular fracture characteristics.
【作者单位】：合肥工业大学;有色金属与加工技术国家地方联合工程研究中心;台州学院;
【基金】：National Magnetic Confinement Fusion Program(2014GB121001) Fund Project of Zhejiang Provincial Key Laboratory for Cutting Tools(ZD201301)
【分类号】：TB33;TF125
【正文快照】： Tungsten carbides are widely employed in tribologicalfields because of their good performance and good wearresistance[1 5].For cemented carbides,the properties canbe modified by the presence of a second phase[6].Cobalt,as the second phase,shows good wet

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