Effect of cryogenic treatment on tribological behaviour of TiC composite coatings

Abstract

Plasma transferred arc (PTA) welding methods were used to produce titanium carbide (TiC) composite coating layers on the surface of 38MnVS6 steel and subsequently deep cryogenic treatment (DCT) was applied to the PTA coating layers. The effects of the TiC powder, different energy inputs (100 and 120A), and DCT on the microstructure and tribological performance were investigated. The microstructure of the composite coatings consisted of cubic TiC, unmelted TiC, and iron matrix. The alloyed and cryogenic treated surfaces exhibited decreases in the coefficient of friction (COF) and wear rate. The average COF of the steel substrate was determined to be 0.373, but for the TiC composite coating layers it varied between 0.236 and 0.33. PTA coating and DCT processes improved the wear resistance 4.5 times compared to the substrate.

Improving scratch-resistance and wear-resistance of VN film by deep cryogenic treatment with liquid nitrogen

“…Unfortunately, Gill et al [22] have discovered that DCT weakens the interfacial adhesion bonding of TiAlN coating and tungsten carbide substrate, leading to a destructive effect on the machining performance, especially at lower cutting speeds. Moreover, as reported in other literatures [19,20,24], the DCT does not always improve the wear performance of coatings/films. Thus, it can be inferred that the different property with DCT is closely related to the intrinsic physical characteristics of different coating/film and substrate as well as the different preparation parameters with different technology.…”

“…To our knowledge, by DCT, the service performance of the coating/film can be also abstractly improved, to a certain extent. However, based on the website of web of science (http://isiknowledge.com), a few studies concerning the influence of DCT on coating/film have been reported [19][20][21][22][23]. Therefore, it is necessary to continue the research of DCT on the coating/film for driving its practical application.…”

An overview of recent advancement in grade cladded surface using overlay techniques and various materials

“…They reported increased in hardness about 5times and wear resistance about 2.5times. Kılıçay et al [15] examined TiC composite coatings on 38MnVS6 for tribological behaviour in micro alloyed steel continuous with cryogenic cooling. They obtained decreased coefficient of friction (COF) and wear rate.…”