Method for preparing rGO/SiO2 coating on surface of Al-Mg-Si alloy polar plate

The invention relates to the field of Al-Mg-Si alloy polar plates, in particular to a method for preparing an rGO/SiO2 coating on the surface of an Al-Mg-Si alloy polar plate. The method comprises the following steps: firstly, generating a layer of hydrophilic surface film on the surface of the Al-M...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG LIJIE, SHAO CHAOFEI, LIU JIANSHENG, HUANG JIHUI, YUAN BIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS 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 ELECTRICITY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The invention relates to the field of Al-Mg-Si alloy polar plates, in particular to a method for preparing an rGO/SiO2 coating on the surface of an Al-Mg-Si alloy polar plate. The method comprises the following steps: firstly, generating a layer of hydrophilic surface film on the surface of the Al-Mg-Si alloy, and then ultrasonically dispersing GO/SiO2 mixed turbid liquid. Preparing an intermediate product in a GO/SiO2 suspension through a dip-coating method, and finally reducing GO through a heat treatment process to prepare a uniform coating. According to the invention, the hydrophilic surface film is generated on the surface of the Al-Mg-Si alloy polar plate, so that the adhesion between A1-Mg-Si and GO/SiO2 can be enhanced; the GO/SiO2 mixed turbid liquid is ultrasonically dispersed, so that a uniform and firm interface can be formed in a dip-coating method without generating pores or defects; and finally, a heat treatment process is carried out in hydrogen and nitrogen environments to eliminate oxygen an