Reserach of the mechanic-tribological characteristics of Ti3SiC2/TiC coatings after annealing

Eurasian Journal of Physics and Functional Materials

卷:4

D. .. Erbolatuly¹  D. B. Buitkenov¹  S. .. Amanzholov¹  B. K. Rakhadilov¹  Zh. B. Sagdoldina¹ 

[1] East-Kazakhstan State University;

关键词: steel u9;    titanium carbosilicide;    heat treatment;    microhardness;    wear resistance;   

DOI  :  10.29317/ejpfm.2020040109

来源: DOAJ

【 摘 要 】

This article investigates the influence of thermal annealing on microhardness and wear resistance of the surface of steel U9/Y9 protected by a composite coating Ti 3 SiC 2 /TiC obtained by detonation sputtering. Thermal annealing was performed in the range of temperatures 700-900 ◦ C during 1 hour. Following annealing the formation of TiO 2 and an increase in the phase content of Ti 3 SiC 2 are observed. Higher microhardness was obtained in coatings subjected to annealing at 800 ◦ C, which can be explained by an increase in the content of carbonized titanium. As the annealing temperature rises further, the thickness of the oxide layer increases, leading to a decrease in the microhardness for the coatings annealed at 900 ◦ C. According to the results of tribological tests, formation of the oxide increases wear resistance of Ti 3 SiC 2 /TiC composite surface coatings.

【 授权许可】

Unknown