Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第25卷    第9期    总第198期    2015年9月

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文章编号:1004-0609(2015)-09-2421-07
超疏水钛合金表面的制备及其摩擦学性能
连峰,任洪梅,管善堃,张会臣

(大连海事大学交通运输装备与海洋工程学院,大连 116026)

摘 要: 为研究表面形貌和润湿性对表面摩擦学性能的影响,采用激光加工技术在Ti6Al4V表面加工间距为100 μm的网格和点阵微结构,将SiO2纳米粒子涂覆在微结构上构建微纳结构。采用接触角测量仪测量试样的表面接触角和滚动角,采用摩擦磨损实验机(UMT)测试摩擦学性能,采用LEXT OLS4000型3D激光共聚焦显微镜进行表面形貌和磨痕表征。结果表明:在具有微结构的表面涂覆SiO2可制备出具有微纳结构的超疏水Ti6Al4V表面,且网格表面比点阵表面更难以润湿。表面越难以润湿,试样的比磨损率越低,点阵和网格超疏水表面分别将比磨损率降低32.3%和53.8%,且摩擦因数曲线的波动幅度和数值均减小。且具有微纳结构的超疏水表面可显著提高Ti6Al4V的摩擦学性能。

 

关键字: 钛合金;疏水;超疏水;摩擦学性能

Preparation of super hydrophobic titanium alloysurface and its tribological performance
LIAN Feng, REN Hong-mei, GUAN Shan-kun, ZHANG Hui-chen

College of Transportation Equipment and Ocean Engineering,
Dalian Maritime University,Dalian 116026, China

Abstract:In order to study the impacts of the surface pattern and wettability on tribological performance,the laser processing was used to prepare grid and dot micro-structure with spacing of 100μm on Ti6Al4V alloy surface. The SiO2nano particles were coated on the micro-structures to build micro-nano structures. The contact angles and roll angles were measured by contact angle measurement. The tribological performance was evaluated by universal micro-tribometer(UMT). The micrograph and wear tracks were investigated by LEXT OLS4000 3D laser scanning confocal microscopy. The results show thatthe super hydrophobic Ti6Al4V surfaces with the micro-nano structure can be prepared by coating the SiO2nano particles on the micro-structures.The grid surface is more difficult to be wet than dot surface.The harder the surface is wet, the lower the wear rate of sample is. The wear rates of super hydrophobic surface with dot and grid decrease by 32.3% and 53.8%, respectively, while the fluctuation and value of friction coefficient curve both decrease. The super hydrophobic Ti6Al4V surfaces with the micro-nano structuresignificantly improve the tribological properties of titanium alloy.

 

Key words: titanium alloy; hydrophobic; super hydrophobic; tribological performance

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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