Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings
来源期刊：材料热处理学报2004年第5期
论文作者：LI Guang-yu NIU Li-yuan JIANG Zhong-hao LIAN Jian-she
关键词：Nanocrystalline; Zinc-nickel alloy coatings; microstructure; performance;
摘 要：Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline zincate bath contained an organic additive that can reduce polarization and a complexing agent. SEM and TEM observations and XRD analysis were performed to examine the microstructure and phase composition of the coatings. The nickel content in deposits is 12.0～14.7% and the coating is consisted of single nanocrystalline γ-phase structure (Ni5Zn21), with grain average grain size about 15nm. The nanocrystalline zinc-nickel alloy coatings have better corrosion resistance, less brittleness and higher microhardness than the conventional zinc 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 zincate bath contained an organic additive that can reduce polarization and a complexing agent. SEM and TEM observations and XRD analysis were performed to examine the microstructure and phase composition of the coatings. The nickel content in deposits is 12.0～14.7% and the coating is consisted of single nanocrystalline γ-phase structure (Ni5Zn21), with grain average grain size about 15nm. The nanocrystalline zinc-nickel alloy coatings have better corrosion resistance, less brittleness and higher microhardness than the conventional zinc coatings.
关键词:Nanocrystalline; Zinc-nickel alloy coatings; microstructure; performance;
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