Synthesis of LaB 6 –ZrB 2  Powder Mixture by Borothermal Reduction of La(OH) 3  and ZrO(OH) 2  Coprecipitated in Boron Suspension

D. D. Nesmelov; O. A. Kozhevnikov; S. V. Vikhman; E. S. Novoselov; I. V. Shatalkina

doi:10.1007/s11148-019-00373-3

Synthesis of LaB₆–ZrB₂ Powder Mixture by Borothermal Reduction of La(OH)₃ and ZrO(OH)₂ Coprecipitated in Boron Suspension

Autores: Nesmelov D.D.¹, Kozhevnikov O.A.¹, Vikhman S.V.¹, Novoselov E.S.¹, Shatalkina I.V.¹
Afiliações:
1. Prometei CRSI of Structural Materials, Kurchatov Institute SRC
Edição: Volume 60, Nº 4 (2019)
Páginas: 389-393
Seção: Article
URL: https://journals.rcsi.science/1083-4877/article/view/249344
DOI: https://doi.org/10.1007/s11148-019-00373-3
ID: 249344

Citar

Texto integral

Acesso aberto
Acesso é fechado

Acesso está concedido
Acesso é fechado

Somente assinantes

Resumo
Sobre autores
Bibliografia
Arquivos suplementares
Estatísticas

Resumo

Eutectic LaB₆–ZrB₂ powder was synthesized by borothermal reduction of an La(OH)₃–ZrO(OH)₂ mixture under vacuum with isothermal curing at 1200 – 1600°C. The mixture of hydroxides was prepared via coprecipitation from aqueous solutions of La and Zr nitrates in a suspension of amorphous boron. The effect of an excess of B on the phase and elemental compositions of the boride mixture was studied. The particle size of the obtained powders depended on the synthesis temperature.