Structure,and properties of CrN thick coatings by.high density arc ion plating

• 作 者: P.Z.Shi[1]J.Wang[1]X.Peng[1]B.L.Shi[1]H.Ding[1]GD.Zhang[1]C.X.Tian[2]D.J.Fu[2]B.Yang[1]
• 机 构: School of Power & Mechanical Engineering,Wuhan University,Wuhan 430072,China
• 出 处: 第四届国际表面与界面科学与工程学术会议(The Fourth International Conference on S
• 发表日期: 2009年期

　　CrN thick coatings were deposited by using a homemade high-density arc ion plating system under different nitrogen partial pressure.X-ray diffraction,scanning electron microscope,Talysurf FormS4C-3D Profiler,HX1000 micro-hardness indenter,MS-T3000 ball-on-disc tester and CS300 electrochemistry system were used to characterize the microstructure and properties of the coatings.The results showed that the crystal structure of coatings changed from substoichiometric Cr2N (201) to fcc CrN (220) preferential orientations with increasing deposition pressure and better surface morphologies were obtained when nitrogen pressure was in between 2 Pa to 5 Pa.The coating exhibited a maximum deposition rate of 10.2 μm/h and the lowest wear rate of 3.3× 10-6 mm3/N·m at 5 Pa.However,the best corrosion resistance was observed wh(e)n nitrogen partial pressure increased up to 8 Pa.