Analysis of Sintering Parameters by SPS on Cemented Carbide

Autor(es)

Carneiro, Marcelo Bertolete ; Machado, Izabel Fernanda ; Rodrigues, Daniel ; Outeiro, JC

• Tipo de documento: Artigo Científico
• Fonte: BIOHYDROMETALLURY: FROM THE SINGLE CELL TO THE ENVIRONMENT; v. 223, p. 3-pg., 2011-01-01.

Resumo

The aim is to analyze the influence of two sintering process parameters concerning the compact densification of WC-Co. The input variables studied were uniaxial pressure (40 and 60 MPa) and holding time (1 and 3 minutes). The output variables monitored were relative density, microstructural features, besides online monitoring of dynamics of sintering. The samples were sintered in a Dr. Sinter-Syntex machine of Spark Plasma Sintering (SPS), which allows heating rate greater than conventional sintering techniques, with the advantage of lower temperature, time and energy consumption. The powder used was a compaction residue of grade K (with content between 3 and 12%Co). The results showed significant influence of pressure on the density and percentage of the porous area; however, the process parameters did not affect the grain size. (AU)

• Processo FAPESP: 10/01073-3 - Estudo do comportamento mecânico em usinagem de aços e sua relação com os esforços de corte e a usinabilidade.
• Beneficiário: Izabel Fernanda Machado
• Modalidade de apoio: Auxílio à Pesquisa - Regular