Abstract: A sprayed coating formation device for forming a sprayed coating on an inner surface of a bore of a cylinder block is provided. The sprayed coating formation device includes a molten-particle jet portion configured to melt a thermal spray material by an arc discharge generated by applying a current to the thermal spray material. The molten-particle jet portion includes a gas jet portion. The gas jet portion is configured to jet a gas to the thermal spray material that is melted, in a direction toward the inner surface. A heater is configured to heat the gas in advance before jetting.

Abstract: A thermal spraying apparatus and a thermal spraying method capable of preventing thermal spray droplets from adhering to a cylinder bore. A thermal spraying apparatus according to an exemplary embodiment includes a thermal spraying gun that sprays a thermal spray material on an internal wall surface of a cylinder bore of a cylinder block, and a gas blowing jig inserted into the inside of an adjacent cylinder bore adjacent to the cylinder bore, blowing openings being formed in the gas blowing jig, the blowing openings being configured so that a gas is blown therefrom and flows downward from the top of the adjacent cylinder bore throughout the entire inner wall surface thereof.