国家/地区 中国（3）
IPC部 C（4）
IPC大类 C25（4）
IPC小类 C25D（4）
IPC C25D005/48（4）
发明人
公开年 2020（2）
申请年 2020（4）
专利权人

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

Repairing contact surface of electric device joint comprises e.g. polishing and flattening the two contact surfaces of device joint, alkali degreasing and performing electric cleaning treatment, activation treatment and brush plating.

LV W, LI Q, DONG C, ZHAO Y

Object used in electric device, has graphene layers that are formed over uneven surface, and graphene oxide that is negatively charged and moves to surface of object, so that graphene oxide layer is formed.

OGUNI T, OSADA T, TAKEUCHI T, NOMOTO K

Plating solution comprises copper sulfate heptahydrate, tris(ethylenediamine), ammonium sulfate dihydrate, sodium sulfate decahydrate, dispersant, nano graphene sheet and tungsten powder.

DING Y, ZHU Z, YE Z, ZHOU M, CHEN X, CHEN B, ZHANG Q, ZHU C, ZHANG S