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Ti6Al4V合金表面類金剛石多層膜的耐蝕及摩擦磨損性能
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國家自然科學(xué)基金（50405005）和教育部新世紀(jì)優(yōu)秀人才資助計劃（NCET-05-0777）資助項目


Study on the Tribological Properties and Corrosion Resistance of Diamond-Like Multilayer Films on Ti6Al4V Alloy Surface
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    摘要:

    采用磁過濾直流陰極真空弧源沉積技術(shù)在Ti6Al4V合金表面制備類金剛石多層膜，采用原子力顯微鏡和納米壓痕儀觀測其表面形貌及硬度；采用微磨粒磨損試驗機(jī)及三電極電化學(xué)測試系統(tǒng)考察類金剛石多層膜在模擬體液環(huán)境中的摩擦學(xué)和耐蝕性能，并與Ti6Al4V合金進(jìn)行對比。結(jié)果表明：類金剛石多層膜由致密分布的納米顆粒組成，表面粗糙度為4.86 nm，硬度和彈性模量分別為54.82和342.27 GPa；在模擬體液中類金剛石膜顯著提高了Ti6Al4V合金的抗磨能力和減摩性能，其磨損率僅為Ti6Al4V合金磨損率的11.7%~22.6%。隨著載荷增加，Ti6Al4V合金和類金剛石膜的腐蝕電位降低，腐蝕電流增加；類金剛石多層膜可有效提高Ti6Al4V合金的耐蝕能力。

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    Diamond-like multilayer films were deposited on Ti6Al4V alloy substrate by filtered cathodic vacuum arc (FCVA) technique. The morphology of the films was observed with an atomic force microscope and the hardness was determined with a nano-indenter. Tribological properties and corrosion resistance of the diamond-like multilayer film in simulated body fluid were investigated using a micro-abrasion tribometer and an electrochemical testing system with three electrodes. Results show that the multilayer films consist of compact nanoparticles, and the surface roughness is about 4.86 nm; the hardness and elastic modulus of multilayer films are approximately 54.82 GPa and 342.27 GPa, respectively. In simulated body fluid, the diamond-like multilayer film remarkably improves the anti-wear ability and friction-reduction performances of the Ti6Al4V alloy substrate, and the wear rate of the multilayer film is only 11.7%-22.6% of Ti6Al4V alloy’s. With an increase of load, the corrosion potential of the film decreases and the corrosion current density increases; the deposited diamond-like multilayer films can effectively improve the corrosion resistance of Ti6Al4V alloy.

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黃偉九,李兆峰,王 國,溝引寧. Ti6Al4V合金表面類金剛石多層膜的耐蝕及摩擦磨損性能[J].稀有金屬材料與工程,2010,39(7):1230~1234.[Huang Weijiu, Li Zhaofeng, Wang Guo, Gou Yinning. Study on the Tribological Properties and Corrosion Resistance of Diamond-Like Multilayer Films on Ti6Al4V Alloy Surface[J]. Rare Metal Materials and Engineering,2010,39(7):1230~1234.]
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  • 收稿日期:2009-08-28
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