Characterization of the Expanded Plasma Jet Generated at Reduced Chamber Pressure

De Ming Yang; Bo Han Tian

doi:10.4028/www.scientific.net/AMM.644-650.4892

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 644-650Characterization of the Expanded Plasma Jet...

Characterization of the Expanded Plasma Jet Generated at Reduced Chamber Pressure

Abstract:

Very low pressure plasma spraying has been attracted attention due to special properties of the expanded plasma jet which may probably deposit specific and unique structure coatings, such as columnar structure coatings. The forming of the coatings is affected by plasma generating and working conditions. These operating parameters such as arc power, plasma gas flow rate, and chamber pressure have influences on pressure, enthalpy and temperature of plasma jet. In this work, an enthalpy probe is applied to measure the enthalpy of argon-hydrogen plasma jet generated at chamber pressure of 3000 Pa and 50Pa. The results showed that the temperature of plasma jet reached to 11000 K at 25 mm from nozzle exit, and then dropped slowly to 7000 K at 400 mm.

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Periodical:

Applied Mechanics and Materials (Volumes 644-650)

Pages:

4892-4895

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.644-650.4892

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Online since:

September 2014

Authors:

De Ming Yang*, Bo Han Tian

Keywords:

Enthalpy, Enthalpy Probe, Plasma, Pressure, Very Low Pressure Plasma Spraying

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