| Texto completo | |
| Autor(es): |
Salem, Raphael E. P.
;
Guiterrez-Gonzalez, Carlos F.
;
Borrell, Amparo
;
Salvador, Maria Dolores
;
Chinelatto, Adilson L.
;
Chinelatto, Adriana S. A.
;
Pallone, Eliria M. J. A.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | International Journal of Applied Ceramic Technology; v. 16, n. 3, p. 9-pg., 2019-05-01. |
| Resumo | |
This work presents the initial results of the dry-sliding wear behavior of 3 mol% yttria-stabilized zirconia reinforced with 5 vol% alumina-niobium carbide (3Y-TZP/5 vol% Al2O3-NbC) nanocomposites sintered by conventional sintering and spark plasma sintering methods in the temperature range of 1350-1450 degrees C. The reinforcement of 3Y-TZP matrix with hard nanoparticles aimed to improve wear strength of the composites. Wear tests were performed by the ball-on-disc method using alumina (Al2O3) and tungsten carbide with 6 wt% cobalt cermet (WC-6%Co) balls as counter-materials, a load of 15 N, a sliding distance of 2000 m, and a sliding speed of 0.1 m/s. Wear behavior was evaluated in terms of wear rate and FE-SEM micrograph analysis of the wear tracks. The nanocomposite sintered at 1450 degrees C by conventional sintering exhibited the least wear when tested with the WC-6%Co ball. Generally, the wear mechanism showed evidence of severe wear regime with both counter-materials. (AU) | |
| Processo FAPESP: | 15/07319-8 - Estudo de sinterização ultra rápida e de baixo consumo energético: flash Sintering |
| Beneficiário: | Eliria Maria de Jesus Agnolon Pallone |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |