Effect of a substrate on the temperature distribution in an argon-hydrogen thermal plasma jet

Autor:	Armelle Vardelle, Michel Vardelle, R. J. Kearney, Pierre Fauchais, D. Lapierre
Rok vydání:	1994
Předmět:	Argon Hydrogen General Chemical Engineering Analytical chemistry chemistry.chemical_element Substrate (chemistry) General Chemistry Plasma Heat transfer coefficient Condensed Matter Physics Surfaces Coatings and Films Plume symbols.namesake chemistry Thermocouple symbols Rayleigh scattering
Zdroj:	Plasma Chemistry and Plasma Processing. 14:407-423
ISSN:	1572-8986 0272-4324
DOI:	10.1007/bf01570204
Popis:	Gas temperature profiles in the plume of an argon-hydrogen thermal plasma jet were determined /torn Rayleigh scattered laser light. Measured profiles were found to be well fitted by a Gaussian curve. Temperature data were compared with values obtained from thermocouples and showed an increasing discrepancy for temperatures higher than 800 K. The presence Q1 a cooled substrate in the flow was observed to increase the center-line temperature by about 22 at the substrate. By, combining the temperature results with calorimetric measurements of heal fox, a heat transfer coefficient to a copper substrate held at 300 K Iras determined to be in the range 400–1000 W/m2. K under typical plasma spraying conditions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::517da07b4139f005be2ca9e2811775e8 https://doi.org/10.1007/bf01570204 Zobrazit plný text záznamu Full text from SpringerLink