Enhancing mechanical and corrosion performance of TiN PVD-coated tool steels through PAN pre-treatment  

作　　者：M.Dadfar H.R.Khandan Pour T.Sanvito 

机构地区：[1]CRT S.R.L.,R&D GroupViale Primo Maggio,19,Nerviano,MI 20014,Italy [2]Department of Materials Engineering,Polytechnic University of Milan,Milan,Italy

出　　处：《Surface Science and Technology》2023年第1期398-406,共9页表面科学技术(英文)

摘　　要：Mechanical properties of plasma-assisted nitrided(PAN),TiN cathodic arc coated,and PAN with TiN coated samples were thoroughly evaluated on tool steel samples of 1.2379.The evaluation involved SEM,nano-indentation,profilometer,micro scratch,and corrosion tests.The results revealed that PAN treatment alters the roughness of the surface,while it has minimal impact on the coefficient of friction.However,it increases the substrate’s hardness,making it twice as hard and three times more resilient against scratch tests,along with improved corrosion resistance.TiNcoated samples are four times harder than untreated ones,but they exhibit a higher elastic modulus(E),leading to a lower H/E index.The most promising results were obtained with PAN+TiN treatment,combining high hardness(H)with lower E,resulting in a high H/E index,a crucial criterion for wear resistance.These samples also demonstrated superior scratch hardness and corrosion resistance,despite being thinner and rougher.

关 键 词：NITRIDING Physical Vapour Deposition(PVD) Mechanical properties testing Corrosion Scratch hardness 

分 类 号：TG1[金属学及工艺—金属学]