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Mechanical Properties and Consolidation of Ultra-Fine WC-10Co and WC-10Fe Hard Materials by Rapid Sintering Process  

Jeong, In Kyoon (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Chonbuk National University)
Park, Jung-Hwan (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Chonbuk National University)
Doh, Jung-Mann (Advanced Functional Materials Research Center, Korea Institute of Science and Technology)
Kim, Ki-Youl (TMC Company)
Woo, Kee-Do (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Chonbuk National University)
Ko, In-Young (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Chonbuk National University)
Shon, In-Jin (Division of Advanced Materials Engineering, Research Center for Advanced Materials Development, Chonbuk National University)
Publication Information
Korean Journal of Metals and Materials / v.46, no.4, 2008 , pp. 223-226 More about this Journal
Abstract
The comparison of sintering behavior and mechanical properties of ultra-fine WC-10wt.%Co and WC-10wt.%Fe hard materials produced by high-frequency induction heated sintering (HFIHS) was accomplished using ultra fine powder of WC and binders(Co, Fe). The advantage of this process allows very quick densification to near theoretical density and prohibition of grain growth in nano-structured materials. Highly dense WC-10Co and WC-10Fe with a relative density of up to 99% could be obtained with simultaneous application of 60 MPa pressure and induced current within 1 minute without significant change in grain size. The hardness and fracture toughness of the dense WC-10Co and WC-10Fe composites produced by HFIHS were investigated.
Keywords
rapid sintering; high-frequency induction heated sintering; wc-fe; wc-co; hard materials; hardness; fracture toughness;
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