摘要
研究了真空粉末烧结法在H13钢表面上制备硬质合金覆层的组织及性能,论述了烧结工艺对覆层显微组织的影响,分析了覆层与钢基底界面形成特点、覆层的微观硬度分布及耐磨性能。结果表明,在1 280～1 300℃烧结,可获得1～3㎜的硬质合金覆层,覆层和钢基底通过Fe、Cr、Mo、V、W、Co、Ni相互扩散渗透产生牢固结合,硬度达到1600HV,具有良好的耐磨性。
The microstructures and properties of coating from cemented carbide on the substrate of H 13 steel by vacuum powder sintering were studied. The effects of sintering temperature on the microstructures of coating were discussed. The interface characteristics between coating and H13 steel substrate, microhardness distribution and wear resistance in the coating were analysed.The results indicate that coating from cemented carbide with thickness of 1-3mm by vacuum powder sintering at temperature ranging from 1280℃ to 1300℃ is obtained. The coating with microhardness of 1600 HV is strongly bonded with the H13 steel substrate by mutual diffusion and penetration of Fe，Cr，Mo，V in substrate towards the coating and W、Co、Ni in coating towards the substrate。
出处
《热加工工艺》
CSCD
北大核心
2005年第8期3-4,共2页
Hot Working Technology
基金
湖北省教育厅技术创新资助项目(2004J002)
关键词
埂质合金
热作模具钢
真空粉末烧结
表面覆层
cemented carbide
hot work tool steel
vacuum powder sintering
surface coating
