公开(公告)号：US20220361313A1

公开(公告)日：2022-11-10

申请号：US17764915

申请日：2020-09-29

申请人： TOCALO CO., LTD.

发明人： Nobuyoshi KUROKI ,  Tatsuo SUIDZU

IPC分类号： H05H1/34 ,  C23C4/134 ,  C23C4/137

摘要： A low pressure plasma spraying method includes turning working gas into plasma by direct-current arc to generate a plasma jet while setting a plasma power source output to 2 to 10 kW in a pressure reducing vessel and feeding raw material powder having an average particle size of 1 to 10 μm into the plasma jet from feeding ports of a thermal spraying gun to form a thermal sprayed coating, which can suppress transformation of the raw material powder and form a dense coating.