Novel Al2O3/SiO2 composite coating with high binding force, high temperature resistance, wear resistance and corrosion resistance and preparation method thereof

• Main Authors: CHEN XIAOPING, LOU YUMIN, YUE JIANLING, BAO TING, ZHAO NINGNING
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: APPARATUS THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to a novel Al2O3/SiO2 composite coating with high binding force, high temperature resistance, wear resistance and corrosion resistance and a preparation method of the novel Al2O3/SiO2 composite coating. The novel Al2O3/SiO2 composite coating comprises a metal or non-metal material, an Al2O3 ceramic coating and a SiO2 coating, wherein the surface of the metal or non-metal material is plated with an Al coating. The preparation method disclosed by the invention has the beneficial effects that the special silica sol is selected to seal honeycomb-shaped holes generated after micro-arc oxidation, so that the novel Al2O3/SiO2 composite coating is formed. Compared with an existing coating technology, the coating has high binding force, good corrosion resistance and wear resistance and good thermal stability at the temperature of 25-300 DEG C, and has good application prospects in the field of surface protection. 本发明涉及一种高结合力耐高温耐磨防腐的新型Al2O3/SiO2复合涂层及其制备方法，包括：表面镀有Al涂层的金属或非金属材料、Al2O3陶瓷涂层以及SiO2涂层。本发明