微/纳米金刚石复合涂层刀具的制备及切削试验  

Preparation of Micro / Nano Diamond Composite Coating Tools and Cutting Tests

作　　者：邓福铭[1] 陈立[1] 邓雯丽[1] 赵烨[1] 雷青[1] 

机构地区：[1]中国矿业大学(北京)超硬刀具材料研究所,北京100083

出　　处：《人工晶体学报》2015年第10期2728-2733,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51172278);北京市北科院联合基金(L150012)

摘　　要：利用化学气相沉积法在硬质合金基体上制备微/纳米金刚石复合涂层,采用扫描电镜、Raman光谱仪、洛氏硬度计、微粒喷浆试验仪对涂层进行微结构与性能表征,同时进行切削试验。结果表明:涂层表面晶粒细小,颗粒尺寸达到纳米级,涂层纯度高,膜/基结合力好,耐磨性高。切削试验结果显示:微/纳米金刚石复合涂层刀具切削加工工件的表面粗糙度比硬质合金刀具小,其表面粗糙度平均值为0.931μm;从后刀面磨损量结果看出微/纳米金刚石复合涂层刀具使用寿命长;从前、后刀面磨损形貌看出金刚石复合涂层结合力好,耐磨性高。Micro/nano diamond coatings were deposited on cemented carbide substrates by chemical vapor deposition method, and the coating ＂s microstructure and properties were characterized by scanning electron microscopy （SEM）, Raman spectrometer, rockwell hardness tester, particle spray tester. Meanwhile, cutting tests were done. The results show that the grain size reaches nanometer scale, the purity of coating is high, film adhesion is well, and wear resistance is high. Cutting test results show that surface roughness is smaller after machining by micro/nano diamond coated tools than YG6, average Ra is 0.931 μm, the flank wear-land width results show that the miero/nano diamond coated cutting tool has long service life, micro/nano diamond coating adhesion is well, and wear resistance is high from the evidence of flank and rake wear morphology.

关 键 词：化学气相沉积 微/纳米金刚石复合涂层 切削试验 表面粗糙度 

分 类 号：TQ164[化学工程—高温制品工业] TG74[金属学及工艺—刀具与模具]