|
|
|
| INFLUENCE OF DOPED NANOPARTICLES ON THE ANTICORROSION PERFORMANCE OF THE PLASMA SPRAYING Al2O3 + 13 mass% TiO2 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 |
|
|
|
|
Abstract The coating samples of Al2O3+13mass% TiO2 doped 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.
|
|
Received: 21 March 2007
|
|
|
|
Corresponding Authors:
lichunfu
|
[1]Ma J.Coatings design and corrosion mechanism of Al2O3ceramic coat-ings[D].Tianjin:Hebei University of Technology,1997(马静.耐蚀Al2O3陶瓷涂层的腐蚀机制及涂层设计[D].天津:河北工业大学,1997)
[2]Xu B S,Zhang W,Liang X B.The application and development of thermal spray materials[J].J.Mater.Eng.,2001,45(12):3-7(徐滨士,张伟,梁秀兵.热喷涂材料的应用与发展[J].材料工程,2001,45(12):3-7)
[3]Qian M G.Handbook of Material Surface Technology and Applica-tion[M].Beijing:China Machine Press,1998,5-7(钱苗根.材料表面技术及应用手册[M].北京:机械工业出版社,1998)
[4]Chen L M,Li Q.The present status and development of plasma spray-ing technology[J].Heat Treat.Technol.Equip.,2006,27(1):1-5(陈丽梅,李强,等离子喷涂技术现状及发展[J].热处理技术与装备,2006,27(1):1-5)
[5]Leon L.Shaw.Thermal residual stresses in plates and coatings com-posed of multi-layered and functionally graded materials[J].Composites,1998,29B:199-210
[6]Erndt C,Lavernia.E J.Thermal spray processing of nanoscale ma-terials I-extended abstracts[J].J.Therm Spray Technol.,2001,7(3):147-181
[7]Zhu Y,Huang M,Huang J,et al.Vacuum-plasma sprayed nanos-tructured titanium oxide films[J].J.Therm Spray Technol.,1999,8(2):219-222
[8]Liu S L,Sun D B,Fan Z S,et al.Current status and progress of thermally sprayed nano structured coatings[J].Mater.Prot.,2006,39(9):40-44(刘胜林,孙冬柏,樊自拴等.热喷涂纳米结构涂层的研究现状[J].材料保护,2006,39(9):40-44)
[9]Tjong S C,Chen H.Nanocrystalline materials coatings[J].Mater.Sci.Eng.,2004,R45(1):1-88
[10]Zhu Y C,Ding C X.Investigation on plasma sprayed TiO2nano-coatings and their ion implantation properties[J].J.Chin.Ceramic Soc.,1999,27(5):520-560(祝延春,丁传贤.等离子喷涂氧化钛纳米涂层及其离子注入特性研究[J],硅酸盐学报,1999,27(5):520-560)
[11]Li C F,Wang R,Liu D H,et al.Effect of doped nano-material on structure and performances of plasma spraying coatings[J].Mater.Prot.,2003,36(5):8-10(李春福,王戎,刘大红等.掺杂纳米材料对等离子喷涂涂层组织性能的影响[J].材料保护,2003,36(5):8-10)
[12]Li C F,Wang R,Wang B,et al.Plasma spraying of doped nano-material application on screw pump[J].Chin.Pet.Mach.,2003,31(special print):89-92(李春福,王戎,王斌等.掺杂纳米陶瓷等离子喷涂在螺杆泵上的应用[J].石油机械,2003,31(特刊):89-92)
[13]Li C F,Dai J L,Wang B,et al.Microstructure and anticorrosion property of AT13coatings made by combination of nanoparticles doping and plasma spraying technique[J].Trans.Mater.Heat Treat.,2004,25(5Ⅱ):964-970
[14]Li C F,Wang B,Zhang Y,et al.Influence of the doped nanophase particle on residual stress of Al2O3+13%TiO2plasma spraying coating[J].Surf.Technol.,2004,33(1):11-14(李春福,王斌,张颖等.纳米掺杂Al2O3基等离子喷涂涂层残余应力分析[J].表面技术,2004,33(1):11-14)
[15]Wang Y Z,Sun Y X,Song Y Q,et al.Wet corrosion behavion of plasma spray Al2O3ceramics coatings on steel1Cr18Ni9Ti[J].Corros.Sci.Prot.Technol.,2002,14(4):227-229(王引真,孙永兴,宋玉强等.等离子喷涂Al2O3涂层腐蚀失效机制[J].腐蚀科学与防护技术,2002,14(4):227-229) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
