Abstract: A composite structure with an aluminum-based alloy layer containing boron carbide and a manufacturing method thereof are provided. The composite structure includes a substrate with an open hole in that surface and the aluminum-based alloy layer containing boron carbide. The aluminum-based alloy layer is disposed in the open hole and contains aluminum, boron, carbon, and oxygen, wherein the content of aluminum is between 4 at. % and 55 at. %, the content of boron is between 9 at. % and 32 at. %, the content of carbon is between 13 at. % and 32 at. %, the content of oxygen is between 2 at. % and 38 at. %, and the ratio of the content of boron to carbon is between 0.3 and 2.7.

Abstract: A composite structure with an aluminum-based alloy layer containing boron carbide and a manufacturing method thereof are provided. The composite structure includes a substrate with an open hole in that surface and the aluminum-based alloy layer containing boron carbide. The aluminum-based alloy layer is disposed in the open hole and contains aluminum, boron, carbon, and oxygen, wherein the content of aluminum is between 4 at. % and 55 at. %, the content of boron is between 9 at. % and 32 at. %, the content of carbon is between 13 at. % and 32 at. %, the content of oxygen is between 2 at. % and 38 at. %, and the ratio of the content of boron to carbon is between 0.3 and 2.7.

Abstract: Disclosed is a power supply device of a rotary compressor, and an electrical connector is installed at a casing of the rotary compressor for electrically connecting a motor installed inside the casing and an external power supply. A planar portion is disposed on a lateral side of the casing for installing the electrical connector, so that the electrical connector installed on a lateral side of the casing of the rotary compressor casing will not cause an increase of height of the rotary compressor to achieve a convenient installation. In addition, a protective cover is mounted onto the planar portion for covering the electrical connector, and the bottom of the protective cover is attached onto the planar portion. The electrical connector is protected by the protective cover without being exposed.