国家/地区 中国（2）
IPC部 C（3）
IPC大类 C22（3）
IPC小类 C22C（3） B22F（2） F16D（2）
IPC C22C038/42（3）
发明人
公开年 2020（2）
申请年 2020（2） 
专利权人

Powder metallurgy brake pad matched with carbon ceramic brake disc for high-speed railway train brake system, comprises e.g. iron powder, copper powder, scaly graphite, graphene, ferrous sulfide powder, silicon carbide and titanium dioxide.

QU X, ZHANG P, ZHANG L

Brake disc containing metallic niobium composition comprises e.g. main material composed of iron, carbon, silicon, manganese, niobium and molybdenum, and auxiliary material composed of zirconia toughened ceramic powder, and graphene powder.

FENG G

Graphene-based steel tubes, pipes or risers used for conveying petroleum, gas and biofuels, and for use in underwater riser systems for deep water with direct application in petroleum industry, comprise aluminum, cobalt, copper and chromium.

CARVALHO A L M D, ZURBA N K, MOREIRA DE CARVALHO A L, MOREIRA D C A L