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Ti-6Al-4V合金熱氧化涂層的高溫磨損行為研究
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江蘇大學(xué) 材料科學(xué)與工程學(xué)院,江蘇大學(xué) 材料科學(xué)與工程學(xué)院,江蘇大學(xué) 材料科學(xué)與工程學(xué)院,江蘇大學(xué) 材料科學(xué)與工程學(xué)院

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TG115.5 8

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國家自然科學(xué)基金資助項目(51071078), 江蘇省材料摩擦學(xué)重點實驗室開放基金(Kjsmcx2012004),江蘇省普通高校研究生科研創(chuàng)新項目(CXLX13-653)


Research on Elevated-temperature Wear Behavior of Thermal Oxidation Coating on Ti-6Al-4V Alloy
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School of Materials Science and Engineering,Jiangsu University,School of Materials Science and Engineering,Jiangsu University,School of Materials Science and Engineering,Jiangsu University,School of Materials Science and Engineering,Jiangsu University

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    摘要:

    通過熱氧化/真空擴散處理在Ti-6Al-4V合金表面制備氧化涂層,采用高溫磨損試驗機對涂層在400 ℃空氣中進行干滑動摩擦磨損試驗,研究了涂層的高溫磨損行為和機制。結(jié)果表明：Ti-6Al-4V合金經(jīng)氧化/擴散后表面形成氧化物涂層,厚度達(dá)250 μm。相比于未處理的材料,氧化物涂層的磨損失重非常小,高溫耐磨性顯著提高。磨損表面均形成摩擦氧化物層,涂層的高耐磨性可歸功于硬化的陶瓷涂層與具保護作用的摩擦層的共同作用。主要磨損機制為剝層磨損。

    Abstract:

    Ti-6Al-4V alloy was thermal oxidized and subsequently vacuum diffused to prepare an oxidation coating. Dry sliding wear tests of the coating were performed at 400 ℃ in air on a high-temperature wear tester. The elevated-temperature wear behaviors and mechanism of coating were studied. The results show that the oxidation coating with a thickness of 250 μm was produced on Ti-6Al-4V alloy. The wear losses of oxidation coating were extremely low, compared with uncoated materials, its elevated-temperature wear resistance was noticeably improved. Tribo-oxide layers were always found to form on worn surfaces. The high wear resistance of coating could be ascribed to the integrated function of the hardened ceramic coating and protective tribo-layer. The predominant wear mechanism was delamination wear during dry sliding.

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周銀,李新星,張秋陽,王樹奇. Ti-6Al-4V合金熱氧化涂層的高溫磨損行為研究[J].稀有金屬材料與工程,2017,46(6):1689~1693.[Zhou Yin, Li Xinxing, Zhang Qiuyang, Wang Shuqi. Research on Elevated-temperature Wear Behavior of Thermal Oxidation Coating on Ti-6Al-4V Alloy[J]. Rare Metal Materials and Engineering,2017,46(6):1689~1693.]
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  • 收稿日期:2015-01-27
  • 最后修改日期:2015-05-27
  • 錄用日期:2015-08-11
  • 在線發(fā)布日期: 2017-11-07
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