Corrosion behavior of sintered zinc-aluminum coating in NaCl solution

来源期刊：中国有色金属学报(英文版)2002年第6期

论文作者：陈玲 李宁 周德瑞

文章页码：1214 - 1217

Key words：sintered zinc-aluminum coating; corrosion behavior; NaCl solution

Abstract: Sintered zinc-aluminum coating (SZAC) was prepared using zinc flakes, aluminum flakes and CrO₃ as main raw materials. The corrosion behavior of SZAC in 3.5%NaCl solution was studied by means of SEM, EDS, EIS and so on. Results indicate that aluminum corroded in advance of zinc to produce speculate or spherical substances, which attaches to SZAC and adds mass to it. Corrosion production passivates metal powders in SZAC, causes E_corr of SZAC to increase gradually, and causes the arising of the third time constant in EIS, which corresponds to the insulation of corrosion production.