Title: Chronium-free deactivator solution for preventing white rust in galvanized layer and its coating method
Application Number: 200610123994 Application Date: 2006.12.01
Publication Number: 1974842 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23C22/05;C23C22/40;C23C22/68;B05D7/24;B05D3/02
Applicant(s) Name: South-China Univ. of Technology Address:
Inventor(s) Name: Lu Jintang;Kong Gang;Che Chunshan;Xu Qiaoyu;Wu Hai
Attorney & Agent: chenyan xian
Abstract:
    The present invention discloses one kind of chromium-free deactivator solution for preventing white rust in galvanized layer and its coating method. Into silane solution containing cilane coupler in 1-50 vol% concentration, molybdenate corrosion inhibitor in 1-30 g/L is added to compound pH 3-7 clear transparent deactivator solution. The deactivator solution is soaked, brushed or sprayed to the surface of galvanized layer to form one adhesive transparent spontaneously curing protecting layer with corrosion resistance similar to that of conventional chromate. The method can prevent white rust formed in the surface of galvanized product and is environment friendly.
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