Sealing process for ceramic and metal in sodium-sulfur cell

• Main Authors: LU JUN, WANG JING, SHEN ZHENGYUAN, WANG QI, ZHU QING, NI HUI, SUN WEICHAO, SHEN YUWEI
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2016
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; 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; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIME, MAGNESIA; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REFRACTORIES; SLAG; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF NATURAL STONE

The invention discloses a sealing process for ceramic and metal in a sodium-sulfur cell.The sealing process includes the steps that chromizing treatment is conducted on 4J33 ferronickel; braze welding is conducted, and 5B05 aluminum alloy is adopted as brazing filler metal, is heated to 600 DEG C and is kept at the temperature; the brazing filler metal is heated to 630-650 DEG C, vacuum micropressure braze welding is adopted, and furnace cooling is conducted to 300 DEG C; nitrogen is introduced for fast cooling, and the sodium-sulfur cell is discharged when cooled to room temperature.By means of the sealing process for ceramic and metal in the sodium-sulfur cell, the problems that productivity is low at present, and the sealing process cannot be industrialized are solved, sealing comprehensive performance is good, and the yield is large. 本发明公开了种钠硫电池中陶瓷与金属的封接工艺，步骤为：采用4J33铁镍合金经渗铬处理；钎焊处理，钎料采用5B05铝合金，升温至600℃保温；升温至630℃?650℃，采用真空微压钎焊处理，炉冷至300℃；充氮气快速冷却，至室温出炉。本发明的钠硫电池中陶瓷与金属的封接工艺，可解决目前生产率低，无法产业化的问题，封接综合性能好，成品率高。