Open AccessEffect of Substrate Bias Voltage on the Structure and Properties of Mos2-Ti Composite Films on Titanium Alloy Surface
Author(s) -
Qi Li,
Min Xiong,
Mingjiang Dai,
Wei Chunbei,
Fengmei Liu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/782/2/022036
Subject(s) - materials science , biasing , alloy , profilometer , indentation hardness , substrate (aquarium) , composite material , sputter deposition , titanium alloy , tribology , titanium , lubrication , composite number , metallurgy , scanning electron microscope , hardness , microstructure , sputtering , thin film , surface finish , voltage , nanotechnology , physics , oceanography , quantum mechanics , geology
In order to discuss the effect of negative bias on the structure and properties of MoS 2 -Ti composite films on titanium alloy surface. In this paper, MoS 2 -Ti solid lubrication films were deposited on titanium alloy surface by unbalanced magnetron sputter. The effects of negative bias on the structure and properties of MoS 2 -Ti solid lubrication films were discussed. The morphology, phase, hardness, friction and wear resistance and wear mark morphology of solid lubricating film were analyzed and tested by scanning electron microscope, XRD, microhardness tester, friction and wear tester and surface profilometer. The results shows that wwhen the negative bias voltage was -150V and -200V, the structure of MoS 2 -Ti films is compact and the bonding with the substrate is compact. With the increase of negative bias voltage, the hardness of the film increases gradually. The wear rate of the films prepared at -150V bias voltage is the lowest, which is 2.2×10 −17 mm 3 /(N×m). The MoS 2 -Ti composite films deposited on the surface of titanium alloy exhibit excellent tribological properties with low friction and wear resistance, which effectively improves the surface friction and wear properties of titanium alloy.