Improving the properties of low temperature sintered alumina bodies with granite reject additions
Carregando...
Data
Data de publicação
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Advances in Science and Technology
Exportar
Resumo
The use of industrial waste materials as additives in the manufacture of ceramic
products has been attracting a growing interest from researchers in recent years and is
becoming common practice. The continued depletion of natural resources throws a new light
on the potential use of some industrial wastes and natural sub-products as full-fledged
alternative ceramic raw materials. This work describes the research carried out on the low
temperature manufacturing of alumina bodies using, as additive, granite reject as-produced by
an ornamental stone processing industry that saws granite stones into blocks and slabs in Rio
Grande do Norte, Brazil. This reject is produced in significant amounts and is discarded in
sedimentation lagoons, landfill areas or simply thrown in rivers, resulting in environmental
pollution. Samples containing up to 30 wt% granite reject and 5 wt% manganese oxide
(constant) were uniaxially pressed and sintered in air in an electric furnace (1150-1350 °C, for
1 hour). Sintered test pieces were characterized by X-ray diffraction, apparent density, open
porosity and flexural strength. The results showed that the addition of granite reject and
manganese oxide enables low temperature sintering and remarkably improves the cold
mechanical properties of the alumina body.
Como referenciar
ACCHAR, W.; SILVEIRA, G.C.L.; CASTANHO, S.R.H.M.; SEGADAES, A.M. Improving the properties of low temperature sintered alumina bodies with granite reject additions. Advances in Science and Technology, v. 45, p. p. 2212-2217, 2006. DOI: 10.4028/www.scientific.net/ast.45.2212. Disponível em: http://repositorio.ipen.br/handle/123456789/5324. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.