期刊文献+

医用Ti6Al7Nb合金氧化行为及其磨损性能 被引量:8

Oxidation Behavior and Wear Resistance of Biomedical Ti6Al7Nb Alloy
下载PDF
导出
摘要 为提高生物医用Ti6Al7Nb合金表面的耐磨损性能,研究了在500~800℃空气中的热氧化行为以及其改善的磨损性能.研究结果表明:500~600℃氧化速率低,表面硬度较基体变化不大.在750℃以上,氧化速度增加,氧化动力学遵从抛物线规律,氧化物主要由TiO2和少量Al2O3组成.在800℃时,氧化物颗粒长大,氧化层疏松,极易剥落.综合考虑硬化层深度和氧化时间,得出最佳热氧化工艺参数为750℃氧化8h.在此工艺下处理的钛合金表面硬度达到1047HV,耐磨性是原合金材料的280倍.分析了合金氧化后耐磨损性能的提高机制. In order to improve the surface wear resistance of the biomedical titanium alloy Ti6Al7Nb, the oxidation behavior was studied in air at 500- 800℃ for 2- 12 h and then its improved wear resistance was tested at room temperature. The testing results indicated that the oxidation rate is low at 500- 600 ℃, and the oxidized surface hardness changes little in comparison with the hardness of the alloy matrix. When the temperature exceeds 750 ℃, the oxidation rate increases and the oxidation kinetics follows the parabolic rule. The oxides mainly consists of compact TiO2 with small amount of Al2O3. At 800 ℃ the oxide particles grow rapidly, thus resulting in a loosened oxidized layer where the spalling effect frequently happens. Taking account of both the depth of hardened layer and oxidizing time, the optimum oxidization parameters are determined to be 750 ℃/8 h. By such an oxidization schedule, the surface hardness comes up to 1 047 HV, especially the wear resistance is greater than 280 times that of original material. The mechanism of wear resistance improvement after oxidation is analyzed in detail.
出处 《东北大学学报(自然科学版)》 EI CAS CSCD 北大核心 2008年第7期996-999,共4页 Journal of Northeastern University(Natural Science)
基金 国家自然科学基金资助项目(30470486)
关键词 医用钛合金 Ti6Al7Nb 氧化动力学 氧化行为 磨损性能 biomedical titanium alloy Ti6Al7Nb oxidation kinetics oxidation behavior wear resistance
  • 相关文献

参考文献11

  • 1Williams D F. Titanium: epitome of biocompatibility or cause for concern[J ]. J Bone Joint Surg, 1994,76 : 348 - 358, 被引量:1
  • 2Wierzchon A T, Fleszar A, Properties of surface layers on titanium alloy produced by thermo-chemical treatments under glow discharge conditions [ J ] Surface and Coatings Technology, 1997,96(2/3) :205 - 209. 被引量:1
  • 3Milliano M T, Whiteside L A, Kaiser A D, et al. Evaluation of the effect of the femoral articular surface material on the wear of a metal-backed patellar component [J]. Clin Orthopm, 1993,287:178 - 190. 被引量:1
  • 4倪道情,黄庆丰.医用钛及钛合金表面处理技术现状[J].口腔材料器械杂志,2006,15(2):88-89. 被引量:8
  • 5Bloyce A. Wear protection of titanium alloy [ C]//Kenneth G. Surface Performance of Titanium. Cincinnati: The Minerals, Metals & Materials Society, 1996:155- 169. 被引量:1
  • 6Loinaz A, Rinner M, Alonso F, et al. Effects of plasma immersion ion implantation of oxygen on mechanical properties and mierostrueture of Ti6A14V[J ]. Surface and Coatings Technology, 1998,103:262 - 267. 被引量:1
  • 7Dong H, Bell T. Enhanced wear resistance of titanium surfaces by a new thermal oxidation treatment [ J ]. Wear, 2000,238(6) : 131 - 137. 被引量:1
  • 8Borgioli T F, Galvanetto E, Iozzelli F, et al. Improvement of wear resistance of Ti-6A1-4V alloy by means of thermal oxidation [ J ]. Materials Letters, 2005, 59 ( 17 ) : 2159 - 2162. 被引量:1
  • 9Shanabarger M R. Comparative study of the initial oxidation behavior of a series of titanium-aluminum alloys[J ]. Applied Surface Science, 1998,134(2) : 179 - 186. 被引量:1
  • 10Furubayashi Y, Hitosugi T, Yarnamoto Y, et al. A transparent metal: Nb-doped anatase TiO2 [ J ]. Applied Physics Letter, 2005,86(5) :252101. 被引量:1

二级参考文献19

共引文献7

同被引文献107

引证文献8

二级引证文献33

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部