High pressure sintered ZrO2-6%wt REO
Source abstract
Abstract
The sintering conditions employed in this work are innovative, due to the use of an alternative technology to process ZrO2-REO (rare earth oxide mixture), so called high temperature - high pressure (HPHT). A pressure of 5GPa was used, temperatures of 1100, 1200, and 1300 o C, for times of 2 and 5 minutes. The best results were obtained for samples sintered at 5GPa/1300 o C/5min., where a micro-hardness of 4.8GPa, fracture toughness of 5.3MPa.m ?, density of 97.9%, and 88% in volume of a tetragonal phase retained at room temperature were achieved.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Dental materials and restorations · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Instituto Nacional de Pesquisas Espaciais (INPE), Centro de Tecnologias Espaciais (CTE), Laboratório Associado de Sensores e Materiais (LAS), São José dos Campos/SP, Brazil
Universidade Estadual do Norte Fluminense (UENF), Centro de Ciência e Tecnologia (CCT), Laboratório de Materiais Avançados (LAMAV), Grupo de Compósitos e Ferramentas de Materiais de Alta Dureza (GFer), Califórnia, Campos dos Goytacazes/RJ, Brazil
References (8)
Show source-provided references
1. 10.1016/j.ceramint.2003.10.02510.1016/j.ceramint.2003.10.025 ↗
2. 10.1016/S0955-2219(03)00307-810.1016/S0955-2219(03)00307-8 ↗
3. 10.1016/S0142-9612(98)00010-610.1016/S0142-9612(98)00010-6 ↗
4. 10.1111/j.1151-2916.1962.tb11073.x10.1111/j.1151-2916.1962.tb11073.x ↗
5. 10.1016/0022-3697(80)90205-X10.1016/0022-3697(80)90205-X ↗
6. 10.1016/S0043-1648(99)00364-610.1016/S0043-1648(99)00364-6 ↗
7. 10.1016/j.ceramint.2004.01.00610.1016/j.ceramint.2004.01.006 ↗
8. 10.1016/S0254-0584(02)00327-910.1016/S0254-0584(02)00327-9 ↗