超疏水钛合金表面在人工海水中的摩擦性能*
收稿日期: 2015-06-30
网络出版日期: 2016-03-04
基金资助
* 国家自然科学基金项目51275064和50975036, 中央高校基本科研业务费专项资金项目3132014303及辽宁省工业攻关计划项目2012220006资助
TRIBOLOGICAL PERFORMANCE OF SUPER HYDRO-PHOBIC TITANIUM ALLOY SURFACE INARTIFICIAL SEAWATER
Received date: 2015-06-30
Online published: 2016-03-04
Supported by
Supported by National Natural Science Foundation of China (Nos.51275064 and 50975036), Fundamental Research Funds for the Central Universities (No.3132014303) and Industrial Research Program of Liaoning Province (No.2012220006)
为提高钛合金在海水中的摩擦性能, 采用激光加工技术分别制备具有网格和点阵微结构的超疏水Ti6Al4V合金表面. 采用HSR-2M高速往复摩擦试验机研究其在人工海水介质中的摩擦学行为, 并与水介质比较. 结果表明, 超疏水Ti6Al4V合金表面的摩擦系数和磨损量(体积)均显著小于Ti6Al4V基体. 海水介质中, 与空白样相比, 点阵和网格表面的摩擦系数分别减小了17.8%和11.7%, 磨损量分别减小了36.8%和57.5%. 超疏水Ti6Al4V合金表面在海水介质中的摩擦系数小于水介质中, 磨损量大于水介质中. 超疏水钛合金表面的制备显著提高了钛合金在海水中的摩擦性能.
连峰 , 臧路苹 , 项秋宽 , 张会臣 . 超疏水钛合金表面在人工海水中的摩擦性能*[J]. 金属学报, 2016 , 52(5) : 592 -598 . DOI: 10.11900/0412.1961.2015.00342
The service environment faced by marine equipment and its key friction pair parts are much more severe than that on land surface. The life cycle and safety of the hydraulic and power transmission system, which directly get in touch with the seawater, depends largely on the tribological behavior of the components in the seawater. Titanium alloy is an ideal material used for ocean engineering, however due to its poor friction performance its life cycle may be shortened when working in the environment with friction and wear. In order to improve the tribological performance of titanium alloy in seawater, laser processing was used to build super hydrophobic with grid and dot micro-structure on Ti6Al4V alloy surface. Tribological performance was evaluated by HSR-2M high speed reciprocating friction test machine in artificial seawater, and compared with in water (distilled water). The results show that the friction coefficients and wear losses (volume) of super hydrophobic Ti6Al4V alloy surface are significantly smaller than that of the Ti6Al4V alloy substrate. The friction coefficients of surface with dot and grid reduced by 17.8% and 11.7%, and wear losses (volume) reduced by 36.8% and 57.5% respectively in artificial seawater. The friction coefficient of super hydrophobic Ti6Al4V alloy surface in artificial seawater is smaller than that in water while the wear loss has the opposite phenomena. The tribological performances of titanium alloy in artificial seawater are significantly improved by the build of super hydrophobic Ti6Al4V alloy surface.
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