Materials Research | |
The role of the binder phase in the WC-Co sintering | |
A.g.p. Da Silva2  W.d. Schubert1  B. Lux1  | |
[1] ,Universidade Federal do Rio Grande do Norte Departamento de Física Natal RN ,Brasil | |
关键词: sintering; hardmetal; cobalt; | |
DOI : 10.1590/S1516-14392001000200003 | |
来源: SciELO | |
【 摘 要 】
The sintering of hardmetal in the solid state is studied. The influence of the WC particle size on the sintering kinetics, the role of the binder phase in the densification process and how sintering depends on the heating conditions are investigated. It is observed that alloys with different WC particle size show quite different structural evolution during sintering, although the densification mechanisms are the same. This is explained by the formation of agglomerates of WC and Co. Hardmetal alloys can sinter very rapidly when high heating rates are used, since rapid heating accelerates the binder spreading and the formation of WC-Co agglomerates. The binder phase (Co) spreads on the WC particles initially as a thin layer. Subsequently, more Co spreads on this layer and WC-Co agglomerates are formed.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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