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Ti6Al4V合金上類(lèi)金剛石膜的摩擦學(xué)性能及腐蝕行為
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國(guó)家自然科學(xué)基金資助項(xiàng)目(20571042)；河南省高校杰出科研人才創(chuàng)新工程資助項(xiàng)目(2006KYCX001)


Tribological Characterization and Corrosion Behavior of DLC Films on Ti6Al4V Alloy
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    摘要:

    采用離子束沉積技術(shù)在醫(yī)用Ti6Al4V合金表面制備類(lèi)金剛石薄膜（DLC），利用原子力顯微鏡、Raman光譜、X射線光電子能譜（XPS）及UMT-2摩擦磨損試驗(yàn)機(jī)對(duì)薄膜的形貌、結(jié)構(gòu)、摩擦學(xué)性能進(jìn)行表征。采用動(dòng)電位極化對(duì)涂層前后基底的耐腐蝕性能進(jìn)行測(cè)試。結(jié)果表明：制備薄膜為類(lèi)金剛石碳結(jié)構(gòu)，基底偏壓對(duì)薄膜形貌、結(jié)構(gòu)有較大影響；偏壓為–100 V時(shí)制備的薄膜表面粗糙度低（6.5 nm），sp3/sp2 比值高，摩擦學(xué)性能優(yōu)異；經(jīng)DLC膜保護(hù)的合金基底耐腐蝕性能獲得明顯改善。

    Abstract:

    Diamond-like carbon (DLC) films were prepared on medical Ti6Al4V alloy by ion beam sputtering deposition technology. The morphology, microstructure and tribological properties of the films were characterized using atomic force microscopy (AFM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and UMT-2 universal micro-tribometer. The corrosion resistance in Hank’s solution of the films and the uncoated sample was evaluated by means of potentiodynamic polarization techniques. The results indicate that the carbon films have typical diamond-like characteristics. The surface roughness and morphology are also significantly influenced by the substrate bias. The film grown at –100 V bias has optimal properties such as high sp3/sp2 ratio of carbon bonding, low roughness of 6.5 nm and excellent friction behavior. Electrochemical measurements show that the DLC films markedly improve the corrosion resistance of the Ti6Al4V alloy.

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劉建立,王 智,張玉娟,張平余. Ti6Al4V合金上類(lèi)金剛石膜的摩擦學(xué)性能及腐蝕行為[J].稀有金屬材料與工程,2011,40(2):255~258.[Liu Jianli, Wang Zhi, Zhang Yujuan, Zhang Pingyu. Tribological Characterization and Corrosion Behavior of DLC Films on Ti6Al4V Alloy[J]. Rare Metal Materials and Engineering,2011,40(2):255~258.]
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  • 收稿日期:2010-03-17
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