Abstract
In this paper, TiN, ZrN, TixZr1-xN, Ti1-xAlxN coatings were obtained by cathodic arc evaporation at optimal technological parameters. The corrosion properties of these coatings were investigated in 5% NaOH. The coating ZrN deposited by cathodic arc evaporation slows down the corrosion in the 5% NaOH by over 3,000 times, and the passive current – by 2,000 times. The TixZr1-xN coating has the best physico-mechanical properties: microhardness Н = 36 GPa, Young’s modulus Е = 312 GPa, elastic recovery We = 78 %, resistance to elastic failure strain H/E = 0.12, and resistance to plastic strain H3/E2 = 1.31 GPa. The Ti1-xAlxN coating has the best wear properties: friction coefficient 0.09, counterbody wear intensity by volume 0.43•10-8 mm3/Nm, coating wear intensity by volume 0.05•10-4 mm3/Nm and by mass•0.03•10-5 mg/Nm. Multilayer coating TiN-TixZr1-xN-Ti1-xAlxN-ZrN (ZrN-top layer) has a complex of high physico-mechanical and wear properties in 5% NaOH.
Highlights
Operating experience and test results of cutting tools and friction pairs show that their premature failure, as a rule, caused by low wear-resistant, corrosive and physicomechanical properties of their materials in the friction zone
Single-layer coatings more often do not possess a set of these functional properties [1,2,3,4]. This prompted researchers to create multilayer nanostructured coatings that improve the durability of tools and friction pairs under conditions of exposure to abrasive, thermal, power loads and an aggressive environment
The article aim is to study the corrosion, physico-mechanical and wear properties of TiN, ZrN, TixZr1-xN and Ti1-xAlxN coatings deposited by the cathodic arc evaporation (CAE) method at optimal technological parameters
Summary
Operating experience and test results of cutting tools and friction pairs show that their premature failure, as a rule, caused by low wear-resistant, corrosive and physicomechanical (functional) properties of their materials in the friction zone. Single-layer coatings more often do not possess a set of these functional properties [1,2,3,4]. This prompted researchers to create multilayer nanostructured coatings that improve the durability of tools and friction pairs under conditions of exposure to abrasive, thermal, power loads and an aggressive environment. The article aim is to study the corrosion, physico-mechanical and wear properties of TiN, ZrN, TixZr1-xN and Ti1-xAlxN coatings deposited by the cathodic arc evaporation (CAE) method at optimal technological parameters.
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