Ceramic crucibles: a new alternative for melting of PbO–BiO1.5–GaO1.5 glasses

Santos, Ieda Maria Garcia dos; Moreira, Rafael Carlos Martins; Souza, Antônio Gouveia de; Lebullenger, Ronan; Hernandes, Antônio Carlos; Leite, Edson Roberto; Paskocimas, Carlos Alberto; Silva, Elson Longo da

Ceramic crucibles: a new alternative for melting of PbO–BiO1.5–GaO1.5 glasses

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dc.contributor.author	Santos, Ieda Maria Garcia dos
dc.contributor.author	Moreira, Rafael Carlos Martins
dc.contributor.author	Souza, Antônio Gouveia de
dc.contributor.author	Lebullenger, Ronan
dc.contributor.author	Hernandes, Antônio Carlos
dc.contributor.author	Leite, Edson Roberto
dc.contributor.author	Paskocimas, Carlos Alberto
dc.contributor.author	Silva, Elson Longo da
dc.date.accessioned	2021-04-23T14:02:43Z
dc.date.available	2021-04-23T14:02:43Z
dc.date.issued	2002-07-10
dc.description.resumo	PbO–Bi2O3–Ga2O3 glasses present interesting properties such as good transmission in the mid-infrared region, high magnetic Verdet constant and non-linear properties. The processing of these heavy-metal-oxide (HMO) glasses is limited by the high corrosive nature of the melt, even in relation to noble metal crucibles. In this work, three kinds of ceramic crucibles (alumina, tin oxide and zirconia) were tested for melting HMO glasses. The main physical properties of the prepared glasses, such as the characteristic temperatures, optical transmission were studied in function of the crucible nature, time/temperature melting parameters. The incorporation of crucible material in the glasses was determined by ICP and atomic absorption. Themaximumglass contamination fromthe crucible was 2.9, 1.6 and 3.6mol% forAl2O3, SnO2 and ZrO2 crucibles, respectively, whenmelting was done at 900 C/240min, for zirconia crucibles and at 1000 C/60 min, for the other two crucibles. The evolution of the physical properties was discussed as a function of contamination degree	pt_BR
dc.identifier.citation	SANTOS, Iêda Maria Garcia dos; MOREIRA, Rafael Carlos Martins; SOUZA, Antônio Gouveia de; LEBULLENGER, Ronan; HERNANDES, Antônio Carlos; LEITE, Edson Roberto; PASKOCIMAS, Carlos Alberto; LONGO, Elson. Ceramic crucibles: a new alternative for melting of pbo⠳bio1.5⠳gao1.5 glasses. Journal of Non-Crystalline Solids, [S.L.], v. 319, n. 3, p. 304-310, maio 2003. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0022309302020550?via%3Dihub. Acesso em: 21 mar. 2021. http://dx.doi.org/10.1016/s0022-3093(02)02055-0.	pt_BR
dc.identifier.doi	10.1016/s0022-3093(02)02055-0
dc.identifier.issn	0022-3093
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32305
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	M140	pt_BR
dc.subject	G180	pt_BR
dc.title	Ceramic crucibles: a new alternative for melting of PbO–BiO1.5–GaO1.5 glasses	pt_BR
dc.type	article	pt_BR