Effect of TiN Films Thickness on MechanicalProperties of Stainless Steel
The surface of 316L stainless steel was modified with the TiN coatings deposited by arc ion plating. The effect of the coating conditions,including but not limited to the N2 pressure,substrate temperature,film thick-ness,deposition time and bias voltage,on the microstructures and mechanical properties was investigated with scan-ning electron microscopy,energy dispersive spectroscopy and conventional mechanical probes.The results show that the thickness of TiN coating has a major impact on the mechanical behavior of the surface and interface.To be spe-cific,as the thickness increased,the grain-size,surface hardness,interfacial shear-stress and wear-resistance in-creased,accompanied by decreases of the friction coefficient and interfacial adhesion.In addition,the average stress vertically changed in a slow increase-decrease manner.
Hard FilmsMechanical propertiesThickness of FilmTiNResidual Stress