Open AccessStudy on friction characteristics of micro-arc oxidation modification layer of titanium alloy surface in seawater environment
Author(s) -
Lao Xingsheng,
Zhao Xu-feng,
Yong Liu,
Dai Chunhui,
Wei Wang
Publication year - 2019
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/631/2/022038
Subject(s) - materials science , titanium alloy , alloy , titanium , layer (electronics) , metallurgy , surface roughness , surface modification , surface finish , substrate (aquarium) , graphite , composite material , tin , seawater , chemical engineering , oceanography , engineering , geology
In order to study the effect of surface microarc oxidation modification on the comprehensive properties of titanium alloys in seawater environment, the metallographic structure of titanium alloy Microarc oxidation modified surface layer and the basic physical parameters such as hardness, thickness and roughness were measured, and the PTFE, filled with 15% glass fiber +5% were filled with 25% fiberglass. The PTFE of graphite and the PTFE filled with 60% tin bronze were tested for friction by friction pair materials, and the wear amount and roughness of titanium alloy and Microarc oxidation modified surface layer were test in simulated sea water as 3.5% Nacl solution, and the results showed that the surface modification of titanium alloy by Microarc oxidation could significantly improve its hardness. The surface roughness can reach 3.2μm, and the friction coefficient of different matching pairs is small, while the surface wear of microarc oxidation modification is less than that of substrate wear.