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Why is the temperature raised in stages during vacuum sintering of niobium?
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niobium processing
Four one-millimetre thick samples of niobium metal foil.
During the vacuum sintering of niobium, the temperature is increased in stages for two primary reasons: to allow for the evaporation of impurities and to prevent the sudden, potentially damaging release of gas from the material. This controlled heating process facilitates the purification of the metal, which ultimately leads to an improvement in its mechanical properties.1