Reinforcing Al2O3 with W–Ti mixed carbide

Acchar, Wilson; Martinelli, Antonio Eduardo; Cairo, Carlos Alberto Alves

Reinforcing Al2O3 with W–Ti mixed carbide

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dc.contributor.author	Acchar, Wilson
dc.contributor.author	Martinelli, Antonio Eduardo
dc.contributor.author	Cairo, Carlos Alberto Alves
dc.date.accessioned	2021-02-10T20:29:06Z
dc.date.available	2021-02-10T20:29:06Z
dc.date.issued	2000-11
dc.description.resumo	Recent advances in high-speed cutting materials have focused on reinforcing alumina with different carbides and nitrides in order to improve hardness and fracture toughness. However, data on mixed carbides is still scarce. The potential use of this type of material for cutting tool applications has yet to be determined. The present study reports some preliminary results obtained reinforcing Al2O3 with WTiC in the range of 5–30 wt.%. The material was hot-pressed at 1650°C for 30 min and then characterized. Vicker's microhardness (HV) and fracture toughness (KIC) were evaluated by the indentation method. The addition of WTiC did not result in any significant change in the fracture toughness of alumina, however hardness values in excess of 22 GPa were obtained	pt_BR
dc.identifier.citation	ACCHAR, W; MARTINELLI, A.E; CAIRO, C.A.A. Reinforcing Al2O3 with W–Ti mixed carbide. Materials Letters, [S.L.], v. 46, n. 4, p. 209-211, nov. 2000. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0167577X00001713?via%3Dihub. Acesso em: 26 nov. 2020. http://dx.doi.org/10.1016/s0167-577x(00)00171-3.	pt_BR
dc.identifier.doi	10.1016/S0167-577X(00)00171-3
dc.identifier.issn	0167-577X
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/31471
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	Fracture toughness	pt_BR
dc.subject	Cutting tools	pt_BR
dc.subject	Al2O3 composite	pt_BR
dc.subject	WTiC	pt_BR
dc.subject	Hardness	pt_BR
dc.title	Reinforcing Al2O3 with W–Ti mixed carbide	pt_BR
dc.type	article	pt_BR