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Ti6Al7Nb合金氮離子注入層在小牛血清溶液中的扭動微動摩擦磨損性能
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國家自然科學基金資助項目 (51005192)；教育部博士點基金 (20100184120002)；固體潤滑國家重點實驗室2009年度開放基金 (0903)


The Torsional Fretting Wear Behavior of Nitrogen Ion Implantation Layer of Ti6Al7Nb Ally Under Bovine Serum
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    摘要:

    利用高能離子注入及增強沉積系統(tǒng)對Ti6Al7Nb合金做了不同劑量的氮離子注入處理，采用球/平面接觸模式，對Ti6Al7Nb合金及其離子注入層/ Zr2O球（直徑為25.2 mm）接觸副在小牛血清介質(zhì)條件下進行了扭動微動磨損實驗研究。結(jié)合動力學分析，借助X射線衍射儀（XRD）、三維形貌儀（3D-profiler）和掃描電鏡（SEM）分析了測試材料成分及其扭動微動磨損磨痕形貌和微觀組織結(jié)構(gòu), 探討了Ti6Al7Nb合金及其離子注入層的扭動微動運行行為和損傷機制。結(jié)果表明：N+離子注入在鈦合金表面形成了氮化鈦層，使鈦合金表面的微觀硬度明顯提高，隨著注入劑量的增加，鈦合金的硬度逐漸升高，磨痕逐漸變小，磨粒逐漸變細，其抗扭動微動磨損性能也提高

    Abstract:

    Ti6Al7Nb alloys were implanted with 40 keV N+ and different implanting dosage, using in high energy ion implantation and enhanced deposition system. The torsional fretting wears of an un-treated and an ion implantation nitride Ti6Al7Nb alloy flats against Zr2O ball (with diameter of 25.2 mm) were carried out under a simulated physiological condition. Combined with the analyses of the frictional kinetics behaviours, and by means of X-ray diffraction, micro-hardness tester and SEM morphologies, the damage characteristics of the surface modification layer and its substrate were discussed in detail. The results show that the ion implantation nitride can improve the surface hardness of the alloy, its resistance of the torsional fretting wear is improved also

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蔡振兵,朱永奎,彭金方,張廣安,沈明學,朱旻昊. Ti6Al7Nb合金氮離子注入層在小牛血清溶液中的扭動微動摩擦磨損性能[J].稀有金屬材料與工程,2013,42(11):2356~2361.[Cai Zhenbing, Zhu Yongkui, Peng Jinfang, Zhang Guangan, Shen Mingxue, Zhu Minhao. The Torsional Fretting Wear Behavior of Nitrogen Ion Implantation Layer of Ti6Al7Nb Ally Under Bovine Serum[J]. Rare Metal Materials and Engineering,2013,42(11):2356~2361.]
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  • 收稿日期:2012-11-20
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