钛合金表面GO/HA/MAO复合膜层的制备及其性能

李明泽; 赵子聪; 吴敏宝; 左佑; 张玉林; 陈飞

引用本文:	李明泽,赵子聪,吴敏宝,左佑,张玉林,陈飞.钛合金表面GO/HA/MAO复合膜层的制备及其性能[J].中国表面工程,2020,33(2):97~110
	Li Mingze,Zhao Zicong,Wu Minbao,Zuo You,Zhang Yulin,Chen Fei.Fabrication and Performance of GO/ HA/ MAO Composite Coating on Titanium Alloy Surface[J].China Surface Engineering,2020,33(2):97~110

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钛合金表面GO/HA/MAO复合膜层的制备及其性能
李明泽¹, 赵子聪¹, 吴敏宝¹, 左佑², 张玉林^1,3, 陈飞^1,4
1.北京石油化工学院材料科学与工程学院, 北京 102617;2.天津大学材料科学与工程学院, 天津 300072;3.北京科技大学新材料技术研究院腐蚀与防护中心, 北京 100083;4.北京石油化工学院特种弹性体复合材料北京市重点实验室, 北京 102617

摘要:

为了改善钛合金种植体在体液中的腐蚀及摩擦腐蚀行为,延长其在人体环境中的服役时间,在微弧氧化 (MAO)膜层上采用溶胶凝胶(Sol-gel)法于羟基磷灰石(HA)和氧化石墨烯(GO)的混合溶胶中浸渍提拉成膜,从而在 Ti6Al4V 合金表面成功地制备了 GO/ HA/ MAO 复合膜层。结果表明,MAO 膜层表面的微孔及微球被 GO/ HA 薄膜有效的覆盖且较为致密;膜层的物相组成主要为金红石相及锐钛矿相的 TiO₂、HA、SiO₂ 和GO;根据电化学腐蚀和摩擦腐蚀结果分析知,GO/ HA/ MAO 复合膜层在模拟体液(SBF)中的耐蚀性及耐摩擦腐蚀性相比于 MAO 膜层和 Ti6Al4V 基体均得到了显著提高。

关键词: Ti6Al4V 合金微弧氧化羟基磷灰石氧化石墨烯摩擦腐蚀

DOI：10.11933/j.issn.1007-9289.20191015001

分类号:TG174.44;TG178

文章编号:1007-9289(2020)02-0097-14

文献标识码:A

基金项目:北京市自然科学基金(2202017)；北京石油化工学院大学生研究训练计划(2020X00175, 2020X00176)

Fabrication and Performance of GO/ HA/ MAO Composite Coating on Titanium Alloy Surface

Li Mingze¹, Zhao Zicong¹, Wu Minbao¹, Zuo You², Zhang Yulin^1,3, Chen Fei^1,4

1.College of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 , China;2.De- partment of Materials Science and Engineering, Tianjin University, Tianjin 300072 , China;3.Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083 , China;4.Bei- jing Key Lab of Special Elastomer Composite Materials, Beijing Institute of Petro chemical Technology, Beijing 102617 , China

Abstract:

To improve the corrosion and tribocorrosion behavior of titanium alloy implants in body fluid and prolong their serv- ice time in human environment, the GO/ HA layer was dipped and drawn into film in the mixed sol of hydroxyapatite (HA) and graphene oxide (GO) by Sol-gel method on the micro-arc oxidation (MAO) coating, and the GO/ HA/ MAO composite coatings was successfully prepared on the surface of Ti6Al4V alloy. The results show the micro-pores/ spheres existed on MAO coating surface is effectively covered by GO/ HA layer and the surface morphologies of the composite coatings become denser compared to the MAO coating without GO/ HA treatment. The prepared composite coating is mainly composed by rutile and anatase TiO₂ ,HA, SiO₂ and GO. The results of electrochemical corrosion and tribocorrosion test indicate the corrosion and tribocorrosion resist-ance of GO/ HA/ MAO composite coatings in simulated body fluid( SBF) is largely enhanced by the protective GO/ HA layer, compared to the MAO coating and Ti6Al4V substrate.

Key words: Ti6Al4V alloy micro-arc oxidation hydroxyapatite graphene oxide tribocorrosion