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By melting and pouring a filler metal into the joint, which has a lower melting point than the adjacent metal, two or more metal objects are linked together by the brazing process.
The two metals that don’t alloy with one another are alloyed with the braze substance. To designated nickel-plated, refractory metallization portions of the package, leads and seal rings may be brazed.
The Global Braze Seal market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
A braze system for sealing metal-supported solid oxide fuel cells.Metal/braze/metal and metal/braze/YSZ joints were created using a composite braze made of Ag-Cu-Ti braze alloy with particulate Al2TiO5 filler in order to seal and link metal-supported SOFC membranes.
Al2TiO5 is added to the braze alloy to reduce its coefficient of thermal expansion (CTE), which results in joints where the YSZ does not shatter due to a mismatch in CTE.
Regarding its impact on electrolyte conductivity, optimization of the reactive element (Ti) loading is examined.
The braze alloy’s electronic conductivity, sealing ability, and strength have not changed much even after complete oxidation at 700 °C in air.
Additionally, joints were tested at 700 °C in an air/fuel dual atmosphere setting. The joint is still hermetically sealed after this exposure, and no obvious joint degeneration was seen.
In contrast, a free-standing foil made of the braze alloy failed after being exposed to two different atmospheres. A thin-film YSZ cell supported by metal was sealed using the composite braze material.
The sealed cell was thermally cycled 30 times extremely quickly without the open circuit voltage degrading in any way.
