国家/地区 中国（2）
IPC部 C（2）
IPC大类 C09（2）
IPC小类 C09D（2）
IPC
发明人
公开年 2017（2）
申请年 2016（2）
专利权人

Preparing solid lubricating ball bearing involves crushing chromium carbide and nickel chrome on planetary ball mill till no precipitate is observed, and adding graphene, nickel coated micro-graphite, and hexagonal boron nitride.

ZHANG D

Polystyrene antibacterial ventilation duct is useful for providing anti-bacterial and anti-viral functions, comprises riveting solid material filled into duct main portion formed by bending and forming double-layer graphene steel plate.

HE Y, HUANG J