Aluminum diamond composite material coated with aluminum silicon carbide layer on surface and preparation method and application thereof

The invention discloses an aluminum diamond composite material coated with an aluminum silicon carbide layer on the surface and a preparation method and application thereof. The aluminum diamond composite material comprises an aluminum diamond core material and the surface aluminum silicon carbide layer coated outside the aluminum diamond core material; the aluminum diamond core material comprises an aluminum matrix and surface-modified diamond particles; the surface aluminum silicon carbide layer comprises an aluminum substrate and silicon carbide particles, the volume fraction of the silicon carbide particles is 60%-75%, and the aluminum substrate in the surface aluminum silicon carbide layer and the aluminum substrate in the aluminum diamond core material are continuous distribution phases. According to the aluminum diamond composite material coated with the aluminum silicon carbide layer on the surface, the surface aluminum silicon carbide layer can prevent the diamond particles in the aluminum diamond co