氮化铁材料的金刚石可切削性实验研究  

Experimental Study of Diamond Turnability of Iron Nitride

作　　者：李占杰[1,2,3] 宫虎[1] 佟伟平[4] 房丰洲[1,2] 杨川[5] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津市微纳制造技术工程中心,天津300072 [3]天津大学机械工程学院,天津300072 [4]东北大学材料电磁过程研究教育部重点实验室,沈阳110004 [5]西南交通大学材料科学与工程学院,成都610031

出　　处：《天津大学学报（自然科学与工程技术版）》2014年第9期785-789,共5页Journal of Tianjin University：Science and Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2011CB706700);国家自然科学基金面上资助项目(51275344)

摘　　要：为解决单晶金刚石切削黑色金属时产生严重磨损这一制造领域难题,对工件表面改性方法进行了深入研究,并探索了新的金刚石可切削材料.对有限厚度的纯铁进行了气体渗氮,并用X射线衍射分析法对渗层进行了物相表征.渗氮纯铁的金刚石可切削性实验结果表明,以氮化铁为主要成分的化合物是一种适于镜面加工的潜在材料(Ra<10,nm);在此研究基础之上,提出了整体单相可控氮化铁粉末冶金钢这一新型模具材料,初步切削实验证明其具有较好的金刚石可切削性,后刀面磨损VB值仅为1.16,μm.To reduce catastrophic diamond tool wear when conventionally machining ferrous metals,the method of surface modification was thoroughly investigated and a novel suitable-for-diamond-cutting material was explored.A pure iron sample of limited thickness was gas nitrided and characterized by X-ray diffraction analysis. The result of diamond turnability of nitrided pure iron shows that the compound layer consisting of iron nitride is a potential mate-rial suitable for diamond cutting（Ra〈10nm）. Based on nitrided pure iron,powder-sintered iron nitride was pro-posed for mould manufacturing on which nanometric surface quality can be obtained via diamond cutting. Experimen-tal study of powder-sintered iron nitride shows good diamond turnability with only a flank wear VB of 1.16μm.

关 键 词：超精密加工 单晶金刚石 黑色金属 刀具磨损 表面质量 

分 类 号：TH161[机械工程—机械制造及自动化]