Abstract:
A mechanism that explains the spontaneous ignition of metal (titanium, zirconium, and their alloys) specimens in a high-pressure sound flow of oxygen at room temperature is proposed on the basis of experimental data. Central to this mechanism is the assumption that the oxide film and the surface layer of metallic structural materials can be fractured by a gas flow. An abrupt cooling at the moment of onset of flow-around contributes to fracture.
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