氯化钠对合成聚晶立方氮化硼复合片质量的影响  

Effect of Sodium Chloride on the Quality of Polycrystalline Cubic Boron Nitride Composites

作　　者：张喆 张俊 王文龙 何绪林 谢志刚[2] 王智慧 ZHANG Zhe;ZHANG Jun;WANG Wen-long;HE Xu-lin;XIE Zhi-gang;WANG Zhi-hui(Guilin Tebon Superhard Material Co.,Ltd.;China Nonferrous Material (Guilin) Geology and Mining Co.,Ltd.,Guilin,Guangxi,China 541004)

机构地区：[1]桂林特邦新材料有限公司 [2]中国有色桂林矿产地质研究院,广西桂林541004

出　　处：《超硬材料工程》2019年第2期26-29,共4页Superhard Material Engineering

基　　金：广西技术创新引导专项:汽车和工程机械零件加工用立方氮化硼刀具材料的开发(合同编号:桂科AC17195010);广西科技重大专项:高性能超硬刀具材料技术开发及产业化(合同编号:桂科AA17204098)项目资助

摘　　要：通过改变旁热式组装中氯化钠总含量(0%、+2%、+3%和+4%),在合成温度为1350℃~1400℃、压力5~5.5GPa和烧结时间20~25min条件下,制成聚晶立方氮化硼复合片,以期达到均匀压力场、改善聚晶层平整度和提高性能稳定性的目的。与传统组装相比,随着体系中氯化钠用量的增加,靠近博士帽堵头侧复合片压力梯度随之减小。当氯化钠用量增至传统盐含量(4%)时,所制聚晶立方氮化硼复合片其平整度和性能稳定性达到最佳,外侧复合片中心与边缘区域聚晶层厚度差可缩小50%以上,且其硬度及切削性能偏差不高于8%。By changing the total content of sodium chloride(0%,+2%,+3%and+4%)in the side-heating assembly,the polycrystalline cubic boron nitride composite sheet was prepared with the conditions of synthesizing temperature 1350~1400%,pressure 5~5.5 GPa and sintering time 20~25 min,in order to achieve uniform pressure field and improve the smoothness of polycrystalline layer and the stability of PcBN compacts.Being different from the traditional assembly,the pressure gradient of the composite near the steel ring decreased with the increase of sodium chloride content in the system.When the Nacl content was increased to 4%,the PcBN compacts exhibited optimal planeness and stability of performance.The thickness difference between the center and the edge could be decreased by more than 50%and The deviation of hardness and cutting performance is not more than 8%.

关 键 词：聚晶立方氮化硼复合片 氯化钠含量 压力场 性能 

分 类 号：TQ164[化学工程—高温制品工业]