ảnh hưởng của SiO2 và Al2O3 tới độ bền ăn mòn hợp kim ZnNi trong môi trường tự nhiên và nhân tạo
Tóm tắt
Electrodeposited zinc-nickel alloy coatings (with composition of Ni: 0, 7 and 14% by weight) in ammonic bath have experimented in natural atmospheres and artificial atmospheres (salt-fog test). Results in salt-fog test show that corrosion resistance of ZnNi coatings is higher by far than Zn coating, especially ZnNi 14% coating. But, results in natural test are on the contrary. Coating composition with Si02 and AI2O3 inert particles has effect on improve significantly corrosion resistance of these electrodeposited alloy coatings. Results are affirmed by tests in natural atmospheres and artificial atmospheres (salt-fog test).Lượt tải
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