国家/地区 中国（3）
IPC部 C（3）
IPC大类 C23（3）
IPC小类 C23C（3）
IPC C25D003/56（3）
发明人 CHEN K（3）
公开年 2023（2）
申请年 2020（2） 
专利权人 GUANGZHOU UL.（3）

Plating layer structure of zinc-nickel alloy plating layer without chromium passivation and hydroxyl graphene, has chromium-free passivation layer prepared by silane passivation agent.

LAI H, CHEN K, GUO C

Dull nickel-plated and graphene-enclosed plating structure for zinc alloy die-casting parts, has zinc-nickel alloy plating layer that is prepared from inside to outside sequentially zinc alloy base portion.

LAI H, CHEN K, GUO C

Heavy-duty anti-corrosive cadmium cobalt alloy and graphene sealing coating comprises e.g. a metal substrate, a cadmium cobalt alloy plating layer, a passivation layer and a graphene sealing layer formed on the passivation layer.

GUO C, LI X, CHEN K, LAI H