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Microwave-induced reaction sintering of NiAl2O4

Authors
Journal
Materials Letters
0167-577X
Publisher
Elsevier
Publication Date
Volume
55
Issue
4
Identifiers
DOI: 10.1016/s0167-577x(01)00653-x
Keywords
  • Nickel Aluminate Spinel
  • Reaction Sintering
  • Enhanced Reaction Synthesis
Disciplines
  • Communication

Abstract

Abstract While the enormous increase in kinetics during the synthesis and sintering of complex ceramics in a microwave field is now well established, there are less examples where synthesis and sintering to high density have been demonstrated in one single step. In this communication, we report the simultaneous synthesis and sintering of NiAl 2O 4 from NiO+Al 2O 3 powder mixture in just 15 min in a 2.45-GHz microwave field. The “anisothermal reaction” condition that was achieved in a microwave field appears to be responsible for the observed enhancement in the reaction kinetics of NiAl 2O 4 formation.

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