Nanotechnology: Nano-Structured ZrO^sub 2^(Y^sub 2^O^sub 3^) - Al^sub 2^O^sub 3^ Fibrous Powders for Composite Materials

A synthesis procedure for the fabrication of multi-component nano-structured refractory oxide powders and fibers was developed. In ZrO^sub 2^(Y^sub 2^ O^sub 3^) - Al^sub 2^O^sub 3^ system, the nano-structured triple solid solutions were formed over the temperature range 600-1100°C. It had been shown...

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Bibliographic Details
Published inEuropean Congress and Exhibition on Powder Metallurgy. European PM Conference Proceedings p. 1
Main Authors Ulyanova, T M, Vitiaz, P A, Krutko, N P, Titova, L V, Medichenko, S V, Shevchonok, A A
Format Conference Proceeding
LanguageEnglish
Published Shrewsbury The European Powder Metallurgy Association 01.01.2010
Subjects
Atoms & subatomic particles
Composite materials
Crystal structure
Metals
Methods
Nanotechnology
Phase transitions
Powder metallurgy
Solid solutions
Temperature
Zirconium
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Summary:A synthesis procedure for the fabrication of multi-component nano-structured refractory oxide powders and fibers was developed. In ZrO^sub 2^(Y^sub 2^ O^sub 3^) - Al^sub 2^O^sub 3^ system, the nano-structured triple solid solutions were formed over the temperature range 600-1100°C. It had been shown that the solid solutions destructed higher 1100°C. This destruction and crystalline transformations caused size particle alumina to decrease. The size of refractory oxide crystallites was calculated and their dependences versus temperature were established. The physical-chemical properties of nano-structured powders were determined. This investigation permits us to regulate the production technology of fibrous and powder nano-structured refractory oxides purposefully. Nano-structured powders can be used as fillers for composite materials and for preparing ceramics. [PUBLICATION ABSTRACT]