Aluminum-zinc-indium-erbium sacrificial anode and preparation method thereof

• Main Authors: XU ZHENGBING, LI HANG, ZENG JIANMIN, WEI BING
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2016
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses an aluminum-zinc-indium-erbium sacrificial anode. The aluminum-zinc-indium-erbium sacrificial anode is composed of, by weight, 3.5-5.5% of zinc, 0.01-0.05% of indium, 0.05-2% of erbium, impurities smaller than or equal to 0.15% and the balance aluminum. The invention further discloses a preparation method of the aluminum-zinc-indium-erbium sacrificial anode. According to the preparation method, high-frequency induction melting under normal pressure and dynamic argon gas protection is adopted, aluminum-zinc alloy, aluminum-indium alloy, aluminum-erbium alloy and pure aluminum are placed into a high-frequency induction melting furnace after being calculated and measured according to the mass percent, are heated to 700-760 DEG C with the temperature preserved for 10-15 minutes and then are poured through cast steel dies with the pouring temperature being 720 DEG C, wherein the cast steel dies are preheated at 300 DEG C for 20 minutes before pouring; the aluminum-zinc alloy, the aluminum-i