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Covers the study of (primarily homogeneous) macroscopic systems from a heat/energy/entropy point of view. Consider also using the tag: [statistical-mechanics].
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Does a crucible need to be fired in a kiln before use?
If you are carefull enough it is still necessary. This pre fire process can remove some low-boiling point substances, especially organic matter and moisture that may have been contaminated during tran …
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Most efficient method to evaporate a metal in a vacuum?
It is quite sure that W (tungsten) crucibles are applied when people evaporate rare earth metal such as Sc (Scandium). BN can't be used as it decomposed in vacuum at about 1800-1900C according to some …