Corrosion-resistant magnesium alloy and preparation method and application thereof

• Main Authors: CHEN FANG, MO HONGBO, XU HAIZHANG, LIU LIHUI
• Format: Patent
• Language: Chinese; English
• Published: 10.11.2023
• Subjects: ADHESIVES; ALLOYS; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FERROUS OR NON-FERROUS ALLOYS; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses a corrosion-resistant magnesium alloy. A corrosion-resistant coating of modified zinc oxide is attached to the surface of the magnesium alloy. The preparation method comprises the following steps: mixing polydimethylsiloxane and stearic acid according to a ratio of 10: 1, and then uniformly coating the surface of the magnesium alloy with the mixture to form a layered liquid-like film; mixing the modified zinc oxide and the modified silicon dioxide, dispersing through a molecular sieve, uniformly spraying on the formed layered liquid-like film, and then drying in a drying oven at 80 DEG C for 4 hours; soaking the prepared coating in a 5wt% stearic acid solution for 5min, soaking in a 20wt% acetic acid/ethanol solution for 3m < i >, and drying at room temperature for 1 hour to form a magnesium alloy material containing the corrosion-resistant coating; when corrosive liquid is attached to the surface of the magnesium alloy, the retention time is effectively shortened, and therefore the ma