Ball milling-induced combustion in powder mixtures containing titanium, zirconium, or hafnium
Journal Article
·
· Journal of Solid State Chemistry
- Univ. of Maryland, Baltimore, MD (United States)
Ball milling induces self propagating high temperature reactions in many highly exothermic powder mixtures. This phenomenon has been studied in a variety of reactions with titanium, zirconium, and hafnium. Several oxides (CuO, Cu{sub 2}O, NiO, Fe{sub 3}O{sub 4}, and ZnO) were reduced with Ti, Zr, and Hf and the borides, carbides, silicides, and sulfides of these metals were prepared from elemental mixtures. The ignition time is much shorter with Zr than with either Ti or Hf whenever oxygen or sulfur is involved in the reaction, but no similar variation is observed for the formation of borides, carbides, and silicides. It is suggested that the fast diffusion of oxygen in ZrO{sub 2} and very likely of sulfur in ZrS{sub 2} are responsible for this behavior.
- OSTI ID:
- 450704
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 125; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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