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Stainless steel (316) foams of varying porosities have been made through powder metallurgy route using NH4HCO3 as a space holder. Green compacts of stainless steel powder with NH4HCO3 were sintered at two different temperatures: 1100°C and 1200°C. At higher sintering temperatures, neighboring stainless steel powders fused together to form polycrystalline grain structure with iron–chromium intermetallic...
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