Corrosion Behavior of Electrodepositing Ni/Al2O3 Composite Coatings under the Presence of NaCl Deposit
来源期刊：JOURNAL OF RARE EARTHS2007年增刊第1期
论文作者：Xie Danyang Liu Lin
Key words：Ni/Al2O3 composite coatings; electrodeposition; NaCl; corrosion; rare earths;
Abstract: The morphology and corrosion behavior of Ni/Al2O3 composite coatings prepared using double-pulsed electrodepositing technique after oxidized under 800℃ NaCl deposit in air environment were analyzed by scanning electrical microscope (SEM), X-ray diffraction (XRD) and energy dispersive spectrum (EDS). The results showed that the corrosion of all composite coatings was accelerated under NaCl deposits, and the corrosion products were rather porous with poor adherence to the matrix. Al2)O3 particles in the coatings can refine the grain size and improve the high temperature corrosion resistance of the coatings. Within the test scope, the more Al2O3 particles in the coatings, the lower corrosion rates could be obtained, and the corrosion mechanism was also discussed.
Xie Danyang1，Liu Lin2
(1.Department of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China;
2.Department of Basic Medicine, Tangshan Vocational Technology College, Tangshan 063000, China)
Abstract:The morphology and corrosion behavior of Ni/Al2O3 composite coatings prepared using double-pulsed electrodepositing technique after oxidized under 800℃ NaCl deposit in air environment were analyzed by scanning electrical microscope (SEM), X-ray diffraction (XRD) and energy dispersive spectrum (EDS). The results showed that the corrosion of all composite coatings was accelerated under NaCl deposits, and the corrosion products were rather porous with poor adherence to the matrix. Al2)O3 particles in the coatings can refine the grain size and improve the high temperature corrosion resistance of the coatings. Within the test scope, the more Al2O3 particles in the coatings, the lower corrosion rates could be obtained, and the corrosion mechanism was also discussed.
Key words:Ni/Al2O3 composite coatings; electrodeposition; NaCl; corrosion; rare earths;
【全文内容正在添加中】
