国家/地区 中国（2）
IPC部 C（2）
IPC大类 C25（2）
IPC小类 C25D（2）
IPC
发明人 ZHANG L（2）
公开年 2022（2）
申请年 2022（2）
专利权人

High-hardness self-lubricating nickel-tungsten-phosphorus composite electroplating solution used e.g. in medicine industry includes soluble nickel compound, soluble phosphorus compound and soluble tungsten compound, self-lubricating particles, and spherical ceramic micropowder.

HAO A, MA Y, ZHAO R, ZHANG L

Automobile top cover aluminum alloy shell, comprises aluminum alloy substrate whose surface orderly provided with a transition layer, an intermediate layer and a corrosion resistant coating, where the middle layer formed by stacking two layers of modified silicon dioxide.

ZHANG L