Physicomechanical Properties of Coatings Based on Max Ti2AlC and (Ti, Nb)2AlC Phases at 20°C and 500°C

被引：1

作者：

Podhurska, V. Ya. ^{[1
]}

Kuprin, O. S. ^{[2
]}

Chepil, R. V. ^{[1
]}

Ostash, O. P. ^{[1
]}

Prikhna, T. O. ^{[3
]}

Sverdun, V. B. ^{[3
]}

Bortnytska, M. O. ^{[2
]}

机构：

[1] Natl Acad Sci Ukraine, Karpenko Physicomech Inst, Lvov, Ukraine

[2] Natl Acad Sci Ukraine, Kharkiv Inst Phys & Technol, Natl Sci Ctr, Kharkiv, Ukraine

[3] Natl Acad Sci Ukraine, Bakul Inst Superhard Mat, Kiev, Ukraine

来源：

MATERIALS SCIENCE | 2023年 / 59卷 / 01期

关键词：

high alloyed steel; coating; high temperature; titanium MAX phases; microhardness; tribological characteristics; fretting fatigue;

D O I：

10.1007/s11003-023-00737-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Physicomechanical characteristics of 15Kh16k5N2MVFAB-Sh steel (0.15C-16Cr-5Co-2Ni-0.7V-0.6Mo-0.3Nb-0.4N): wear resistance at 20 degrees C and 500 degrees C and resistance to fretting fatigue at 20 degrees C without and with coatings obtained by the method of vacuum-arc deposition using targets based on the MAX phases of Ti2AlC and (Ti1-xNbx)2AlC, where x = 0.1 and 0.2, are investigated. At 20 degrees C the friction coefficient and the wear specific rate of all coatings are greater than that of the studied steel in contact with a ShKh15 steel (1.0C-1.5Cr-0.3Ni-0.3Mn-0.3Si-0.25Cu) ball under a load of 2 N. Unambiguous relationship between microhardness and tribological characteristics of materials has not been recorded. The resistance to fretting fatigue of the samples with Ti2AlC -based coating in contact with the Ni-alloy (17Cr-12W-11Fe-6Co-3Ti-1.5Nb-1.6Al) in high-cycle region (N > 10(5) cycles) is significantly higher than that of uncoated samples. The tribological characteristics of all materials decrease at 500 degrees C but the least for samples with Ti2AlC based coating. We have not found positive influence of niobium doping on the wear and fretting fatigue resistance of these coatings.

引用

页码：10 / 17

页数：8