文献类型：期刊文献

英文题名：Impact of picosecond laser surface texturing on the microstructure and corrosion resistance of micro-arc oxidation coating on Ti-6Al-4V alloy

作者：Fan, Cunying[1,3];Shi, Wenqing[2,3];Lin, Fang[1,3];Huang, Jiang[4];Yang, Chuanchao[4]

机构：[1]Guangdong Ocean Univ, Sch Naval Architecture & Shipping, Zhanjiang 524088, Guangdong, Peoples R China;[2]Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Guangdong, Peoples R China;[3]Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Guangdong, Peoples R China

年份：2025

卷号：513

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001529428200001)、、EI(收录号：20252718724403)、Scopus(收录号：2-s2.0-105009633737)、WOS

基金：This research was supported by the National Natural Science Foundation of China (Grant No. 62073089) and the Fund of Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching (Grant No. 2023B1212030003) .

语种：英文

外文关键词：Ti-6Al-4V alloy; LST; MAO; Microstructure; Corrosion resistance

外文摘要：The Ti-6Al-4V alloy is favored in marine engineering due to its high specific strength and superior corrosion resistance despite its inherent issue of poor wear resistance. This study aims to enhance the wear and corrosion resistance of Ti-6Al-4V alloy by employing a dual technique involving picosecond laser surface texturing (LST) in conjunction with micro-arc oxidation (MAO). The LST processing refined surface grain size facilitated the formation of rutile-phase TiO2 within the MAO coating, offering additional mechanical anchoring points for enhanced coating adhesion. The LST + MAO coating exhibited a 16.19 % reduction in porosity, an 82.45 % increase in coating thickness, and a 19.38 % increase in static contact angle compared to the MAO coating. The LST structure enhanced the AlPO4 enrichment in the dense layer of the MAO coating, forming a composite hard phase with TiO2. The LST + MAO coating exhibited a 39 % reduction in friction coefficient, an 86.23 % increase in corrosion prevention efficiency, and an 11.80-fold enhancement in dense layer resistance compared to the substrate. The integration of LST with MAO technology can enhance the wear and corrosion resistance of Ti-6Al-4V alloy, thereby extending its operational lifespan in marine engineering applications.