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材料工程  2013, Vol. 0 Issue (5): 62-66,72    DOI: 10.3969/j.issn.1001-4381.2013.05.013
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
磷酸表面处理复合SiO2涂层对Ti-6Al-4V合金抗氧化性能的影响
任保轶1, 刘子孺2, 高艳慧1, 张学军1
1. 沈阳化工大学 应用化学学院, 沈阳 110142;
2. 通用哈电风能(沈阳)有限公司, 沈阳 110168
Effect of SiO2 Coating Combined with Chemical Treatment by Phosphoric Acid on Oxidation Resistance of Ti-6Al-4V Alloy
REN Bao-yi1, LIU Zi-ru2, GAO Yan-hui1, ZHANG Xue-jun1
1. College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China;
2. GE-HE Wind Energy (Shenyang) Co., Ltd., Shenyang 110168, China
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摘要 研究磷酸表面处理和复合SiO2涂层对Ti-6Al-4V合金600℃下空气中抗氧化性能的影响。结果表明:600℃氧化24h后,磷酸表面处理使Ti-6Al-4V合金平均氧化速率下降了近75%,复合非晶SiO2涂层样品600℃等温氧化100h后,平均氧化速率比空白样品降低一个数量级,抗氧化性能与单独的磷酸处理比较进一步提高。磷酸表面处理和复合SiO2涂层样品的氧化膜致密性增强且与基体的黏附性良好,二者氧化膜中TiO2的体积分数均低于空白样品。磷酸表面处理形成的TiP2O7层与SiO2涂层共同抑制了O的内扩散和Ti的外扩散。
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关键词 磷酸处理SiO2涂层等温氧化Ti-6Al-4V合金    
Abstract:The effects of phosphoric acid chemical treatment and composite SiO2 coating on oxidation resistance of Ti-6Al-4V alloy were investigated. Results show that, the average oxidation rate of the Ti-6Al-4V alloy treated by phosphoric acid decreases nearly by 75% in comparison with the blank samples at 600℃ after 24h oxidation in air. The oxidation rate of composite SiO2 coating sample reduces one order of magnitude in comparison with the blank sample oxidation for 100h at the same condition. The composite SiO2 coating has better anti-oxidation ability than phosphoric acid treatment. The compactness of the oxide scale of the composite SiO2 coating and the phosphoric acid treatment samples increases, and a good adhesion with the substrate is shown, the volume fractions of TiO2 in oxidation films reduce both phosphoric acid chemical treatment and composite SiO2 coating samples. The in-diffusion of O and out-diffusion of Ti are restrained because of the formation of TiP2O7 phase and deposit SiO2 coating.
Key wordsphosphoric acid chemical treatment    SiO2 coating    isothermal oxidation    Ti-6Al-4V alloy
收稿日期: 2012-03-05      出版日期: 2013-05-20
中图分类号: 

U177.2

 
基金资助:

辽宁省教育厅科学研究项目(L2011062)

作者简介: 任保轶(1976-),男,博士,讲师,主要从事金属腐蚀与防护、溶胶-凝胶功能薄膜的研究工作,联系地址:辽宁省沈阳市经济技术开发区11号街沈阳化工大学应用化学学院(110142),E-mail:baoyir@126.com
引用本文:   
任保轶, 刘子孺, 高艳慧, 张学军. 磷酸表面处理复合SiO2涂层对Ti-6Al-4V合金抗氧化性能的影响[J]. 材料工程, 2013, 0(5): 62-66,72.
REN Bao-yi, LIU Zi-ru, GAO Yan-hui, ZHANG Xue-jun. Effect of SiO2 Coating Combined with Chemical Treatment by Phosphoric Acid on Oxidation Resistance of Ti-6Al-4V Alloy. Journal of Materials Engineering, 2013, 0(5): 62-66,72.
链接本文:  
http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.05.013      或      http://jme.biam.ac.cn/CN/Y2013/V0/I5/62
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