81 citations of the journal in the Russian Science Citation Index | Vol. 4 No 1 was published on March 17, 2020. | Clarivate Analytics | Control Committee in Education and Science of the Republic of Kazakhstan |


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

Number 1_Vol.4

AUTHORS: D.B. Buitkenov, B.K. Rakhadilov, Zh.B. Sagdoldina, D. Erbolatuly

DOI: 10.29317/ejpfm.2020040109

PAGES: 86 - 92

DATE: 2020-03-17


ABSTRACT

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.
 


KEYWORDS

steel U9, titanium carbosilicide, heat treatment, microhardness, wear resistance.
 


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