Abstract: A method includes applying a material coating on a surface of a machine component using a thermal spray, wherein the material coating is formed from a combination of a hardfacing material and aluminum-containing particles. The method also includes thermally treating the material coating to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material.

Abstract: A skin-treatment method using wax is provided, which includes preheating a skin-treatment wax filled in containers with nozzles in a heating device to melt the wax into a liquid wax capable of being sprayed, and spraying the liquid wax filled in the containers with nozzles in the heating device on a surface of the skin under treatment so as to form a wax mask. A skin-treatment tool using wax is also provided, which includes a heating device for preheating a skin-treatment wax placed therein to melt the wax into a liquid wax capable of being sprayed, and at least one container with a nozzle disposed in the heating device. The skin-treatment tool of the present invention has a compact structure and is convenient to use, which has been widely used in beauty parlors, houses, apartments, hotel rooms, lounges, and other places capable of conducting skin treatments using wax on the spot.