Material Degradation Under Pulsed High Temperature and High Pressure
The AMMRC ballistic compressor is described as an instrument capable of adiabatically compressing gases to temperatures of several thousand Kelvins and pressures of several thousand atmospheres for a time of a fraction of a millisecond. Problems of measuring the gas conditions and its equations of state are discussed. Application to gun barrel erosion/corrosion is discussed through the example of various nitrogen/argon test gas experiments on 4340 steel. An interesting feature of an apparent melt and redeposit process in the formation of carbon containing nodules on the surface.
KeywordsAuger Spectroscopy Scan Auger Microscopy Escape Channel Magnetic Pickup Ballistic Compressor
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- 1.G. T. Lalos and G. L. Hammond, “The Ballistic Compressor and High Temperature Properties of Dense Gases,” Chapter 25 pp. 1193–1218 in “Experimental Thermodynamics, Volume II, Experimental Thermodynamics of Non-reacting Fluids” Edited by B. Le Neindre and B. Vodar: Butterworths, London, (1975).Google Scholar