纳米掺杂对Al2O3+13%TiO2等离子喷涂涂层耐蚀性能的影响

中国腐蚀与防护学报

2008, Vol. 28

Issue (6期): 331-336

研究报告

本期目录 | 过刊浏览

纳米掺杂对Al₂O₃+13%TiO₂等离子喷涂涂层耐蚀性能的影响

李春福¹;王戎²;牛艳花¹;朱泽华¹;李天雷¹

1.西南石油大学油气藏地质与开发国家重点实验室成都 610500
2.中国石油大学（北京）化学化工学院北京 102249

INFLUENCE OF DOPED NANOPARTICLES ON THE ANTICORROSION PERFORMANCE OF THE PLASMA SPRAYING Al₂O₃+ 13 mass% TiO^₂ COATINGS

LI Chunfu¹;WANG Rong²;NIU Yanhua¹;ZHU Zehua¹;LI Tianlei¹

1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation; Southwest Petroleum University;Chengdu 610500
2.College of Chemistry and Chemical Engineering; Petroleum University of China(Beijing);Beijing 102249

全文: PDF(1421 KB)

摘要:

利用大气等离子喷涂技术（APS），在45号钢基体上制备纳米掺杂5%~30%Al₂O₃+13%TiO₂（质量分数）涂层，利用扫描电镜（SEM）、X射线衍射（XRD）等技术手段测定涂层组织结构及密度、孔隙度、通孔率等性能，在80℃、10%H₂SO₄溶液中对涂层进行浸蚀实验。结果表明，纳米掺杂提高了涂层在酸性介质中的鼓泡时间，而涂层从鼓泡到脱落所需时间与纳米含量无关。这是由于纳米掺杂使涂层密度提高，开孔率、通孔率降低，组织均匀性提高所致。建立了热喷涂涂层毛细管腐蚀模型，解释了纳米掺杂量对涂层失效的影响机理。

关键词 ：等离子喷涂, 纳米掺杂, Al₂O₃+13wt%TiO₂陶瓷涂层, 涂层腐蚀失效

Abstract：

The coating samples of Al₂O₃+13mass% TiO₂doped with 5% to 30% of nanoparticles were prepared on the substrate of steel 45 by air plasma spraying. The composition and structure, density, open hole percentage and pylome number were analyzed by SEM, XRD and other physical analysis methods. The samples were undergone corrosion in the medium of 10% H₂SO₄ aqueous solution at temperature 800 ℃. The results indicate that the bubbling time of coatings in the corrosive medium was increased with the increase of doped nanoparticles concentration while the time from bubbling to spalling is independent of nanoparticles concentration. The improved performance of anticorrosion was resulted from the increase of coating density, the decrease of open hole percentage and pylome numbers. The capillary corrosion model was established to analyze the influence of the doped nanoparticles on the coating failure.

Key words： plasma spaying nanoparticles doping Al2O3+13wt%TiO2 ceramics coating coating failure

收稿日期: 2007-03-21

ZTFLH:

TB174.442

基金资助:

国家自然科学基金资助项目（50372054）

通讯作者: 李春福 lichunfu10@163.com

Corresponding author: lichunfu

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引用本文:

李春福王戎牛艳花朱泽华李天雷. 纳米掺杂对Al₂O₃+13%TiO₂等离子喷涂涂层耐蚀性能的影响[J]. 中国腐蚀与防护学报, 2008, 28(6期): 331-336.
LI Chun-Fu. INFLUENCE OF DOPED NANOPARTICLES ON THE ANTICORROSION PERFORMANCE OF THE PLASMA SPRAYING Al₂O₃+ 13 mass% TiO^₂ COATINGS. J Chin Soc Corr Pro, 2008, 28(6期): 331-336.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2008/V28/I6期/331

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