国家/地区 中国（3）
IPC部 C（3）
IPC大类 C23（3） C25（3）
IPC小类 C23C（3）
IPC C23C028/00（2） C25D003/56（2）
发明人 GUO C（3）
公开年 2023（2）
申请年 2020（3）
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

Protective layer structure of non-cyanide cadmium plating and electrophoretic painting comprises metal substrate, non-cyanide cadmium plating layer, phosphate layer and electrophoretic paint coating comprising hydroxyl graphene material.

GUO C, PENG C, LAI H