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- Title
Preparation of ultrafine WC-Co cermets by combining pretreatment and consolidation with spark plasma sintering.
- Authors
Zhao, Shixian; Song, Xiaoyan; Wang, Mingsheng; Liu, Guoquan; Zhang, Jiuxing
- Abstract
Ultrafine-grained WC-Co bulk materials were prepared by a new method that contains pretreatment of the milled powder mixture and subsequent spark plasma sintering (SPS). Ball milling parameters and the pretreatment temperature have significant effects on the microstructure and properties of WC-Co cermets. The prepared cermets have a mean grain size of less than 0.5 μm even with a pretreatment temperature as high as 1300°C. The WC-10wt.%Co cermet bulk prepared by the optimized milling, pretreatment, and SPS processing achieves excellent mechanical properties with a Vickers hardness of HV 1643, a fracture toughness of 13.1 MPa·m1/2 and a transverse rapture strength of 3100 MPa.
- Publication
Rare Metals, 2009, Vol 28, Issue 4, p391
- ISSN
1001-0521
- Publication type
Article
- DOI
10.1007/s12598-009-0077-4