Patent ID: 11891917
Assignee: NORTH UNIVERSITY OF CHINA
Field: Surface technology, coating (Chemistry)
Classification: CPC F  C  Y | IPC C  F

Claim 7:
8. The method for measuring surface temperatures of a turbine blade according to claim 1, wherein in step 8, preparing the alumina protective layers specifically comprises following steps: firstly, putting the alumina sol into a dip coater, then dipping the turbine blade with the alumina insulating layer into the alumina sol, and then pulling the turbine blade with the alumina insulating layer at a uniform pulling speed of 50 mm/min to 100 mm/min, forming an alumina liquid film on the surface of the alumina insulating layer to obtain a turbine blade having the alumina liquid film, then putting the turbine blade having the alumina liquid film on a heating table and drying at 150° C. for 10 min, then putting the turbine blade having the alumina liquid film into a drying oven and drying at 450° C. for 10 min to obtain a dried alumina insulting layer, and finally putting the turbine blade having the alumina liquid film into a tube furnace and annealing at 600° C. for 2 h to obtain the alumina protective layers on the turbine blade.