Mechanisms and characteristics of electroless deposited double-layer as sacrifical anode
Chen Shaoan Li Zhizhang Yao Tiangui Yu Decai(Dept of Material Science)
On the basis of studying the process and the electropolar potential of the Single-layer deposits for corrosion protection, this paper deals with the double-layer consisting of two electroless deposits as sacrifical anode protection. The best parameter and corrosion resistance of the double-layer deposit have been dfter-mined by the salt spray and electrochemical tests, the resules show that corrosion resistace of the doutle-leyer deposit is several times or dozens times higher than that of the single-layer deposit. The corrosion mechanism has also been analysed by the results of Metallographic、SEM observation.