MANUFACTURE OF MATERIAL HAVING CORROSION RESISTANCE TO MOLTEN SALT

• Main Authors: YAMAMOTO MASAO, TATEISHI HIROSHI, KANEKO HISAFUMI
• Format: Patent
• Language: English
• Published: 25.01.1988
• Subjects: BASIC ELECTRIC ELEMENTS; 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; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; 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

PURPOSE:To manufacture a material having corrosion resistance to molten salt for use in fused carbonate - type cells, by subjecting a metallic element body to preliminary oxidation and successively by lithumizing the surface of the above element body. CONSTITUTION:The metallic element body is subjected to preliminary oxidation by means of oxidation treatment in steam, treatment in water, oxidation treatment in the air, molten-salt oxidation treatment, anodic oxidation treatment, or a combination of the above. Successively, the surface is lithumized in a gas containing lithium compounds or lithium. As the above metallic element body, Fe-containing alloys are used.