Sintering features of cemented carbides WC–Co processed from fine powders
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Abstract
Abstract Since the last 30 years, the cemented carbides WC–Co are processed from finer and finer powders. Both densification behaviour and microstructure evolution along the liquid-phase sintering (LPS) are different for materials prepared from powders of micronic or submicronic size. The typical features induced by the use of submicronic particles – large contribution of the solid-state densification, abnormal growth – are presented. The major questions, related to the understanding of densification hindrance and grain growth inhibition, are listed.
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