INVESTIGADORES
TOMBA MARTINEZ Analia Gladys
artículos
Título:
"Surface finish and mechanical strength of dense alumina"
Autor/es:
A. G. TOMBA MARTINEZ; A.L. CAVALIERI
Revista:
MATERIALS RESEARCH BULLETIN
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2000 vol. 35 p. 1077 - 1085
ISSN:
0025-5408
Resumen:
Disks of commercial alumina powder were fabricated by slip casting and sintering (1600°C, 2h). Two different surface treatments were performed: a coarse machining, using a 70 grit diamond wheel (C) and a fine one with SiC paper of 120 and 320 grit (F). In order to study the mechanisms of material deformation and removal and the final superficial features, worn surfaces were analyzed by scanning electron microscopy, profilometry and residual stresses measurements by X-ray diffraction. The fracture strength of the treated specimens was evaluated in biaxial flexure, including a statistical analysis of the data. The results were analyzed having in mind the characteristics of the different surface finishes.
