PLASMA SPRAYING OF BORON CARBIDE USING TERNARY GAS MIXTURES

Abstract In D.C. plasma guns used for plasma spraying, the properties of the plasma forming-gas control, to a great extent, the characteristics of the plasma jet and the momentum, heat and mass transfer to the particles injected in the flow. This paper deals with mixtures of argon, helium and hydrogen and the effect of the volume composition of these mixtures on the dynamic and static behavior of the plasma jet. Both were investigated from the measurements of arc voltage and gas velocity. Correlations between these parameters and the operating variables (arc current, gas flow rate, gas mixture composition) were established from a dimensional analysis. The results were supported by the calculation of the thermodynamic and transport properties of the ternary gas mixtures used in this study.

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Synthesis and characterization of aluminum oxide–boron carbide coatings by air plasma spraying

Ceramics International ◽

10.1016/j.ceramint.2010.02.024 ◽

2010 ◽

Vol 36 (5) ◽

pp. 1517-1522 ◽

Cited By ~ 6

Author(s):

Amit Datye ◽

Srinivasarao Koneti ◽

George Gomes ◽

Kuang-Hsi Wu ◽

Hua-Tay Lin

Keyword(s):

Aluminum Oxide ◽

Boron Carbide ◽

Plasma Spraying ◽

Synthesis And Characterization ◽

Air Plasma ◽

Air Plasma Spraying ◽

Carbide Coatings

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Tritium Adsorption on Tungsten and Boron Carbide Coatings Deposited by Vacuum Plasma Spraying

Fusion Science & Technology ◽

10.13182/fst12-a14110 ◽

2012 ◽

Vol 62 (1) ◽

pp. 46-49

Author(s):

X. B. Zheng ◽

M. Matsuyama ◽

Y. R. Niu ◽

Yi Zeng ◽

H. Ji ◽

...

Keyword(s):

Boron Carbide ◽

Plasma Spraying ◽

Vacuum Plasma Spraying ◽

Vacuum Plasma ◽

Carbide Coatings

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Plasma Spraying of Metal Coatings Using CO2-Based Gas Mixtures

Journal of Thermal Spray Technology ◽

10.1007/s11666-008-9265-2 ◽

2008 ◽

Vol 17 (5-6) ◽

pp. 608-611 ◽

Cited By ~ 10

Author(s):

L. Pershin ◽

L. Chen ◽

J. Mostaghimi

Keyword(s):

Plasma Spraying ◽

Gas Mixtures ◽

Metal Coatings

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Structure and mechanical properties of boron carbide coatings formed by electromagnetically accelerated plasma spraying

Diamond and Related Materials ◽

10.1016/s0925-9635(03)00283-8 ◽

2003 ◽

Vol 12 (10-11) ◽

pp. 1891-1896 ◽

Cited By ~ 8

Author(s):

J. Kitamura ◽

S. Usuba ◽

Y. Kakudate ◽

H. Yokoi ◽

K. Yamamoto ◽

...

Keyword(s):

Mechanical Properties ◽

Boron Carbide ◽

Plasma Spraying ◽

Carbide Coatings

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Layered and Graded Coatings as Plasma Facing Materials for Fusion in LSCPM

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.368-372.1795 ◽

2008 ◽

Vol 368-372 ◽

pp. 1795-1798

Author(s):

Shu Xiang Song ◽

Zhang Jian Zhou ◽

Wei Zhi Yao ◽

Wei Wei Cong ◽

Chang Chun Ge

Keyword(s):

Powder Metallurgy ◽

Boron Carbide ◽

Plasma Spraying ◽

Thermal Performance ◽

High Heat ◽

Water Quenching ◽

Particle Sizes ◽

Graded Coatings ◽

Heat Loading ◽

Plasma Facing Materials

This paper reports some new progresses on layered and graded coatings for plasma facing materials in fusion devices in Laboratory of Special Ceramics and Powder Metallurgy (LSCPM), University of Science and Technology Beijing (USTB), China. They included tungsten coatings made be various particle sizes of initial feedstock and interlayers and boron carbide graded coatings. All the coatings were fabricated on the oxygen free copper by plasma spraying. The microstructures and properties were investigated for PFM. Water quenching and high heat loading experiments were also carried out to estimate the thermal performance of these coatings.

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