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Growth and corrosion resistance of molybdate modified zinc phosphate conversion coatings on hot-dip galvanized steel LIN Bi-lan(林碧兰), LU Jin-tang(卢锦堂), KONG Gang(孔 纲), LIU Jun(刘 军) School...; Abstract: The modified zinc phosphate conversion coatings(ZPC) were formed......
; Document code: A 1 INTRODUCTION The electrodeposited coatings of zinc and its alloys have been widely used... coatings, the rate determining step may change from diffusion process of Zn2+ ions through Fig.2 SEM morphology of zinc electrodeposit obtained in electrolyte containing 30g/L Zn2......
in random orientation of the zinc crystals and improves the microhardness of the pure zinc coatings. 5) The manganese-containing electrolytes produce smooth and compacted zinc deposits. 6) Cathode... and composite zinc-yttria stabilized zirconia coatings[J]. Journal of Materials Processing Technology, 2009, 209(5): 2632-2640. [9] ALEJANDRO R, IGNACIO G, JOS? L N. Current efficiency studies of the zinc......
of Materials of Ministry of Education, Northeastern University, Shenyang 110004, China Received 14 April 2010; accepted 10 August 2010 Abstract: The morphology and texture of zinc coatings deposited... of thin hexagonal platelets tilted with respect to the substrate surface. Zinc coatings exhibited low angle pyramidal {11.5} nonfiber texture component resulting from epitaxial growth via two......
Isothermal corrosion (γ′+γ) Ni3Al alloy in liquid zinc WANG Wen-jun(王文俊), LIN Jun-pin(林均品), WANG Yan-li(王艳丽), CHEN Guo-liang(陈国良) State Key Laboratory for Advanced Metals and Materials... in liquid zinc containing small amounts of aluminum (mass fraction less than 0.2%) at 450 ℃ were carried out. The results show that the controlling mechanism of the dissolution reaction is diffusion through......
收稿日期:2000-02-16 Effect of chromic trioxide content in solutions on properties of sintered zinc-rich coatings Abstract: The effect of chromic trioxide content in solutions on the properties of sintered zinc rich coatings was studied by employing zinc flakes and aluminum flakes as materials. The results show that the chromic trioxide content in solutions determines......
on the steel containing 0.12%-0.25% silicon decreases with increasing temperature of zinc bath. The microstructures of hot-dip galvanized coatings on silicon-containing steels (0.14%Si) immersed in zinc... layer and the acceleration of the dissolution of ζ layer to zinc bath co-lead to the decrease of the thickness of ζ layer with increasing temperature. Key words: zinc coatings; Sebisty effect......
Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1 (1.The Key Lab of Automobile Materials, Ministry of Education, China, College of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun, 130025, China) 摘要:Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline......
Investigation of High Molar Ratio Potassium Solution Used in Zinc-Rich Coatings LI Sheng1,YAN Rui1,WU Hang1 (1.Surface Engineering Research Institute, Beijing 100072, China) 摘要:High molar ratio potassium silicate solution used in zinc-rich water-base coatings was prepared by adding the nanosize SiO2 to the low molar ratio potassium silicate solution, and its microstructure was investigated......
salt spray (NSS) tests, and were compared with those of the single coatings. The results show that post-sealing the phosphated HDG steel with molybdate solution, the pores among the zinc phosphate crystals are sealed with molybdate films containing Zn, P, O and Mo, and the continuous composite coatings are formed. The suppression of both the anodic and the cathodic processes of zinc corrosion......
