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

Claim 4:
5. The method for measuring surface temperatures of a turbine blade according to claim 1, wherein in step 4, preparing the alumina insulating layer specifically comprises following steps: firstly, putting the alumina sol into a dip coater, then dipping the turbine blade with the YSZ insulating layer into the alumina sol, and then pulling the turbine blade with the YSZ insulating layer at a uniform pulling speed of 50 mm/min-100 mm/min, forming an alumina liquid film on the surface of the YSZ insulating layer, then putting the alumina liquid film on a heating table and drying at 150° C. for 10 min, then putting the alumina liquid film into a drying oven and drying at 450° C. for 10 min, and finally putting the dried alumina liquid film into a tube furnace and annealing at 600° C. for 2 h to obtain the alumina insulating layer.