Abstract:Partial groove textures with different parameters were prepared on GCr15 disk specimen surface by UV laser. The effects of the partial texture ratio and the area ratio of groove on friction coefficient were studied in the boundary lubrication condition in HT-1000 high temperature friction and wear testing machine under different load and speed. The results show that, with the increase of the partial texture rate under light load, the friction coefficient of the groove texture shows a trend of first decrease then increase, with the increase of the area ratio of groove texture, the friction coefficient shows a trend of first increase then decrease. The partial groove texture surface shows good friction reducing effect at low speed and light load, but the phenomenon of friction increasing appears at high speed and heavy load for the partial groove texture surface.