Mechanical activation assisted self-propagating high- temperature synthesis of Si/Al2O3 composites

The process of mechanochemical interaction of SiO2 with Al was studied. The mechanical activation of the SiO2/Al mixture results in a decrease of the temperature of chemical interaction of SiO2 with Al from 1100°C to about 600°C. The mechanochemically prepared SiO2/Al may serve as a precursor for Si...

Full description

Saved in:
Bibliographic Details
Main Authors: Grigoryeva, T F, Kaminsky, Yu D, Sharafutdinov, M R, Talako, T L, Vorsina, I A, Barinova, A P, Becker, K D, Šepelák, V, Lyakhov, N Z
Format: Conference Proceeding
Language:English
Subjects:
Aluminum oxide
High temperature
Particulate composites
Physics
Self propagation
Silicon dioxide
Synchrotrons
Synthesis
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The process of mechanochemical interaction of SiO2 with Al was studied. The mechanical activation of the SiO2/Al mixture results in a decrease of the temperature of chemical interaction of SiO2 with Al from 1100°C to about 600°C. The mechanochemically prepared SiO2/Al may serve as a precursor for Si/Al2O3 composites formed by subsequent self- propagating high-temperature synthesis (SHS). For the first time, the SHS process (reduction of SiO2 by Al) was followed in-situ by the time-resolved X-ray synchrotron diffraction.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/144/1/012080