Patent ID: 8597728

Claim:
A film forming method by an aerosol deposition method which sprays an aerosol jetted from a nozzle on an object including a first flat surface, a second flat surface having an angle of 90 degrees or larger and smaller than 180 degrees between the first flat surface and the second flat surface and a curved surface connecting the first flat surface to the second flat surface, while continuously changing a spraying position of the aerosol, to form a film which continuously covers the first flat surface, the second flat surface and the curved surface, the film forming method comprising: a first arranging step of arranging the nozzle so that an angle formed between a jet line along a jet direction of the aerosol and the first flat surface is in a range of 30 degrees to 60 degrees and so that an angle formed between a first virtual line obtained by projecting the jet line on the first flat surface and a first boundary line is in a range of 0 degree to 60 degrees in a case where the nozzle is positioned so that the jet line hits the first boundary line which is a boundary between the first flat surface and the curved surface; a first film forming step of jetting the ultrafine particle material from the nozzle, while keeping a distance and an angle between the nozzle and the first flat surface, and continuously spraying the aerosol on the first flat surface and the curved surface connected to the first flat surface, to continuously form a film which covers the first flat surface and a film which covers at least part of the curved surface; a second arranging step of arranging the nozzle so that an angle formed between the jet line along the jet direction of the aerosol and the second flat surface is in a range of 30 degrees to 60 degrees and so that an angle formed between a second virtual line obtained by projecting the jet line on the second flat surface and a second boundary line is in a range of 0 degree to 60 degrees in a case where the nozzle is positioned so that the jet line hits the second boundary line which is a boundary between the second flat surface and the curved surface; and a second film forming step of jetting the aerosol from the nozzle, while keeping a distance and an angle between the nozzle and the second flat surface, and continuously spraying the aerosol on the second flat surface and the curved surface connected to the second flat surface, to continuously form a film which covers the second flat surface and a film which further covers the film formed on the curved surface in the first film forming step.