▎ 摘　　要

NOVELTY - Preparing a micro-arc oxidation coating of an aluminum alloy heat sink for a high thermal conductivity and high power LED lamp involves preparing a micro-arc oxidation base solution and a reduced graphene oxide dispersion solution separately for later use, mixing the micro-arc oxidation base solution and the reduced graphene oxide dispersion solution and magnetically stirring to obtain a micro-arc oxidation treatment solution, putting the aluminum alloy radiator and the stainless steel plate in the micro-arc oxidation treatment solution, and using the aluminum alloy radiator as the anode and the stainless steel plate as the cathode to perform micro-arc oxidation on the aluminum alloy radiator, and ceramic film containing reduced graphene oxide is formed on the surface of the aluminum alloy. USE - Method for preparing a micro-arc oxidation coating of an aluminum alloy heat sink for a high thermal conductivity and high power LED lamp. ADVANTAGE - The method enables to prepare a micro-arc oxidation coating of an aluminum alloy heat sink for a high thermal conductivity and high power LED lamp, which has high hardness, corrosion resistance, and a ceramic film of good radiating performance, has excellent conductivity, can obviously improve the radiating performance of the radiator and improve the radiating effect of the LED lamp and prolongs the service life of the LED lamp.