Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360

Выпуски:
Том 23, 2019 Том 22, 2018 Том 21, 2017 Том 20, 2016 Том 19, 2015 Том 18, 2014 Том 17, 2013 Том 16, 2012 Том 15, 2011 Том 14, 2010 Том 13, 2009 Том 12, 2008 Том 11, 2007 Том 10, 2006 Том 9, 2005 Том 8, 2004 Том 7, 2003 Том 6, 2002 Том 5, 2001 Том 4, 2000 Том 3, 1999 Том 2, 1998 Том 1, 1997

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v14.i4.80
pages 379-388

PLASMA SPRAYING OF BORON CARBIDE USING TERNARY GAS MIXTURES

S. Janisson
CEA/DAM Le Ripault, BP 16 - 37260 Monts - France
Armelle Vardelle
ENSIL, ESTER Technopole, 87068 Limoges - France
Michel Vardelle
LMCTS-URA 320, University of Limoges, 123 Avenue Albert Thomas -87060 Limoges Cedex - France
Pierre Fauchais
Laboratoire Sciences des Procedes Ceramiques et de Traitements de Surface UMR CNRS 6638 University of Limoges 123 avenue Albert Thomas, 87060 LIMOGES - France
Erick Meillot
CEA/DAM Le Ripault, BP 16 - 37260 Monts - France

Краткое описание

Materials which exhibit high specific heat and melting enthalpy combined with a low density, like boron carbide B4C, are difficult to melt by plasma spraying under standard spray conditions. Moreover, the injection of this low-density powder in the plasma jet is critical, especially when fine particles are used. The optimization of the plasma-forming gas composition may make the penetration of the particles in the gas flow easier, and improve their melting state. This paper presents an investigation of the effect of the composition of ternary gas mixtures of argon, helium and hydrogen on B4C particles heating and acceleration. The particle injection and the resulting spray pattern in the jet were controlled by using a 1D imaging technique. The particle velocity distribution was measured with a laser Doppler anemometer and the particle overall temperature with a high-speed pyrometer.

ЛИТЕРАТУРА

  1. Janisson, S., Meillot, E., Vardelle, A., Coudert, J. F., Pateyron, B., and Fauchais, P. , Plasma Spraying Using Ar-He-H2 Ternary Gas Mixtures.

  2. Swank, W. D., Fincke, J. R., and Haggard, D. C. , A Particle Temperature Sensor for Monitoring and Control of the Thermal Spray Process.

  3. Pateyron, B. and Delluc, G. , ADEP - Databank of University of Limoges and CNRS.