| Texto completo | |
| Autor(es): |
Nelson Delfino de Campos Neto
;
Leonardo Pratavieira Deo
[2]
;
Marcio Andreato Batista Mendes
[3]
;
Michael Joseph Kaufman
[4]
;
Marcelo Falcão de Oliveira
[5]
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 25, 2022-06-17. |
| Resumo | |
The microstructure of a melt-spun Zr28Ni44Cu28 (at. %) alloy was characterized in order to determine the structures and compositions of the crystalline phases that compete with glass formation during rapid solidification. Two crystalline phases were identified, namely, a face centered cubic (FCC) zirconium oxide phase and a primitive cubic version of the big-cube oxide phase, using a combination of scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, and transmission electron microscopy techniques. Our results indicate that the Zr-O atomic pair interaction is preferential compared to the other atomic pair possibilities, supporting the formation of Zr-based oxides over the equilibrium phases in the ternary Zr-Ni-Cu system. Further, the results provide insight into the mechanisms of oxygen-induced crystallization in Zr-based BMGs and the corresponding decrease in glass forming ability (GFA) with increasing oxygen concentrations. (AU) | |
| Processo FAPESP: | 11/20690-6 - Identificação de fases cristalinas em amostras com alta TFV por análises avançadas de microscopia eletrônica |
| Beneficiário: | Nelson Delfino de Campos Neto |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Iniciação Científica |