▎ 摘　　要

NOVELTY - Conductive self-lubricating composite coating comprises substrate, the surface of the substrate is sequentially composed of diamond-type layer, diamond-type carbon layer and graphene layer from inside to outside. USE - Used as conductive self-lubricating composite coating. ADVANTAGE - The self-lubricating composite coating: has simple and efficient preparation process, good stability, strong interlayer bonding force, improved electrical conductivity, self-lubricating property, anti-corrosion property, and long service life; realizes the bidirectional optimization of friction performance and functionality of composite coating; and has lower friction coefficient and wear rate in service environments e.g. fluid lubrication, boundary lubrication, dry friction, high load, and high speed. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the conductive self-lubricating composite coating.