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Endothermic gas is a gas that inhibits or reverses oxidation on the surfaces it is in contact with. This gas is the product of incomplete combustion in a controlled environment. An example is hydrogen gas (H2), nitrogen gas (N2), and carbon monoxide (CO). The hydrogen and carbon monoxide are reducing agents, so they work together to shield surfaces from oxidation.
Endothermic gas is often used as a carrier gas for gas carburizing and carbonitriding. An endothermic gas generator could be used to supply heat to form an endothermic reaction.[1]
Synthesised in the catalytic retort(s) of endothermic generators, the gas in the endothermic atmosphere is combined with an additive gas including natural gas, propane (C3H8) or air and is then used to improve the surface chemistry work positioned in the furnace.[2]
See also
[edit]References
[edit]- ^ Herring, Daniel H. "Principles and Use of Endothermic Gas Generators" (PDF). heat-treat-doctor. Retrieved 28 May 2018.
- ^ Berry, Theodore P. "AN OVERVIEW OF ENDOTHERMIC GENERATORS" (PDF). mcgoff-bethune. Retrieved 28 May 2018.