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.
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页码：10 / 17
页数：8
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