| Texto completo | |
| Autor(es): |
Failamani, F.
;
Goschl, K.
;
Reisinger, G.
;
Nunes, C. A.
;
Coelho, G. C.
;
Machado, A. J. S.
;
Correa, L. E.
;
dosSantos, J. C. P.
;
Giester, G.
;
Rogl, P.
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION; v. 36, n. 6, p. 12-pg., 2015-12-01. |
| Resumo | |
Novel FeB-type phases have been evaluated in the systems Ta-{Ti, Zr, Hf}-B either from as cast or arc treated samples by x-ray powder and single crystal diffraction as well as electron probe microanalysis. In each of the three systems the formation of the FeB-type phase suggests a high temperature stabilization of a binary group IV metal monoboride with FeB-type. This holds true for Ti and Hf, while for Zr the single crystal study of (Ta,Zr)B proves that it is a true ternary phase, as no stable monoboride exists in the binary Zr-B system. EPMA analyses reveal that the FeB-type phases Ta{Ti, Zr, Hf} B are formed by substitution of Ta in TaB by rather small amounts of group IV elements (similar to 3 at.% of Zr, similar to 7 at.% Hf, and similar to 10 at.% Ti). (AU) | |
| Processo FAPESP: | 97/06348-4 - Estudo de estabilidade de fases em ligas Nb-B-Si ricas em Nb |
| Beneficiário: | Carlos Angelo Nunes |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |