Influence of KF concentration on thickness and energy consumption of micro-arc oxidation coatings on LY12 aluminum alloy substrate
In this paper,ceramic coatings were produced on LY 12 aluminum alloy by the micro-arc oxidation (MAO) technique in an alkali sodium silicate electrolyte consisting of different KF concentrations(0~15g/l).The influence of KF concentration on making energy consumption and thickness of the MAO coatings was studied.Results revealed that increasing KF concentration caused an increase in the thickness and roughness of coatings and a decrease in the average energy during the MAO process.In response to the increase in KF concentration,the little content of F-in the coatings were increased simultaneously.However,the phase structure and composition of the coatings hardly varied with different KF concentrations.Moreover,it was observed that the coatings produced in electrolytic solution with 10g/L concentration of KF obtained an excellent thickness and making energy,but the coatings were ablated locally with the KF concentration of higher than 10g/L for more than 60 minutes.
ceramic coatings micro-arc oxidation KF energy consumption thickness
Jing Chen Jinyong Xu Jiachen Zhao Cheng Gao Gui Wang
School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin Guangxi Youjiang Bureau of Mines, Tiandong 531501, China
国际会议
厦门
英文
462-465
2012-01-04（万方平台首次上网日期，不代表论文的发表时间）