| http://www.w3.org/ns/prov#value | - The sintering atmosphere may be an oxidizing atmosphere such as air when using one or more oxides such as ZrO2 and HfO2 as the controllers, and must be an inert atmosphere such as vacuum or argon when using controllers poor in oxidation resistance (such as SiC, carbides, carbonitrides and nitrides of IVa, Va and VIa group metals), with a sintering temperature of under 1,300??? C., sintering would
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