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TC4合金表面TiNi/Ti2Ni改性層不同載荷滑動(dòng)干摩擦性能研究
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國(guó)家自然科學(xué)基金 (51071106, 50671071)；山西省自然科技基礎(chǔ)研究基金（2008012008-3）；國(guó)家“863”計(jì)劃項(xiàng)目（2007AA03Z521）


Study on Sliding Dry Friction Properties of TiNi/Ti2Ni Modified Layer on TC4 Alloy under Different Loads
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    摘要:

    利用等離子表面合金化技術(shù)在Ti6Al4V合金表面制備了TiNi/Ti2Ni合金層，考察了合金層的表面形貌、成分分布、截面組織形貌、相結(jié)構(gòu)。采用球盤(pán)磨損試驗(yàn)機(jī)分析了TiNi/Ti2Ni合金層在不同載荷下的滑動(dòng)干摩擦學(xué)性能，并與基體進(jìn)行對(duì)比。結(jié)果表明，基體和TiNi/Ti2Ni合金層磨損機(jī)制主要表現(xiàn)為磨粒磨損。在同一磨損條件下，TiNi/Ti2Ni合金層的摩擦系數(shù)略低于基體，耐磨性優(yōu)于基體。TiNi/Ti2Ni合金層在不同載荷的摩擦系數(shù)接近，在0.29~0.32之間波動(dòng)。隨著載荷的增加，磨損率增加。

    Abstract:

    TiNi/Ti2Ni alloyed layer was prepared on surface of Ti6Al4V alloy by plasma surface alloying process. Surface morphology, composition distribution, cross-section morphology and phase structure of Ni modified layer were analyzed. Sliding dry friction performance of TiNi/Ti2Ni alloyed layer was observed and analyzed under different loads by Pin-on-disc test, and compared with the TC4 substrate. The results indicate that the wear mechanism of both TiNi/Ti2Ni alloyed layer and the TC4 substrate shows abrasion wear. Under the same wear condition, the friction coefficient of TiNi/Ti2Ni alloyed layer is slightly lower than that of the TC4 substrate, the wear resistance of TiNi/Ti2Ni alloyed layer is better than that of TC4 substrate. Friction coefficients under different loads fluctuate between 0.29~0.33 and wear rate increases with increasing of load.

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王振霞,賀志勇,王英芹,劉小萍,唐 賓. TC4合金表面TiNi/Ti2Ni改性層不同載荷滑動(dòng)干摩擦性能研究[J].稀有金屬材料與工程,2012,41(7):1186~1190.[Wang Zhenxia, He Zhiyong, Wang Yingqin, Liu Xiaoping, Tang Bin. Study on Sliding Dry Friction Properties of TiNi/Ti2Ni Modified Layer on TC4 Alloy under Different Loads[J]. Rare Metal Materials and Engineering,2012,41(7):1186~1190.]
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  • 收稿日期:2011-07-25
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