Patent ID: 11891976
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  F  Y | IPC C  F

Claim 7:
8. A method for manufacturing a wind turbine blade, comprising steps of:
forming an intermediate layer formed of metal, cermet, ceramic, or a composite material of resin and at least one of the metal, the cermet, or the ceramic on a base member formed of FRP and having a blade shape; and
forming an erosion-resistant overcoat having a porosity of 5% or less on the intermediate layer with HVOF spraying,
wherein
a spray film forming the erosion-resistant overcoat is formed of cobalt alloy or cermet including tungsten carbide, and
the intermediate layer includes an intermediate spray film having a higher porosity than that of the spray film forming the erosion-resistant overcoat.