Process Design and Production of Boron Trichloride from Native Boron Carbide in Lab-Scale

2009 ◽  
pp. 77-90
Author(s):  
D. Agaogullaria ◽  
I. Duman
Keyword(s):  
Boron Carbide ◽  
Process Design ◽  
Boron Trichloride ◽  
Design And Production

Decision-based process design for shortening the lead time for mold design and production

CIRP Annals ◽  
2002 ◽  
Vol 51 (1) ◽  
pp. 127-130 ◽  
Author(s):  
Masayuki Nakao ◽  
Shinjiro Yamada ◽  
Michiyo Kuwabara ◽  
Masato Otubo ◽  
Yotoro Hatamura
Keyword(s):  
Process Design ◽  
Lead Time ◽  
Mold Design ◽  
Design And Production

Mechanism And Characterization Studies on Boron Carbides Deposited by Chemical Vapor Deposition Technique

2005 ◽  
Vol 886 ◽  
Author(s):  
Mustafa Karaman ◽  
Hilmi Önder Özbelge ◽  
Naime Asli Sezgi ◽  
Timur Doğu
Keyword(s):  
Boron Carbide ◽  
Substrate Surface ◽  
Chemical Vapor ◽  
Jet Impingement ◽  
Reaction Model ◽  
Adsorbed Hydrogen ◽  
Phase Reaction ◽  
Boron Trichloride ◽  
Vapor Deposition Technique ◽  
Xps Characterization

ABSTRACTBoron carbide was produced in an impinging jet CVD reactor from a gas mixture of BCl3, CH4 and H2. The mass transfer limitations on the reaction kinetics were minimised by the jet impingement on the substrate surface. XPS characterization of the produced deposits revealed a nearly pure boron carbide phase containing small amounts of oxy-boron and oxy-carbon species. After a detailed kinetic study, a reaction model was proposed to predict the rates of boron carbide and dichloroborane formation reactions. In this model, boron trichloride is adsorbed on the surface non-dissociatively, whereas hydrogen and methane are adsorbed dissociatively. BC is formed on the solid surface through the reaction of adsorbed boron trichloride with adsorbed methane in the form of CH3(s) (adsorbed CH3 on the surface). Produced BC is reacted in successive series reactions including adsorbed boron trichloride and adsorbed hydrogen. In the proposed mechanism, dichloroborane is produced only through the gas phase reaction between boron trichloride and hydrogen. The simultaneous fit of the experimental data to the model expression gave good fits for the boron carbide and dichloroborane formation reactions with the high correlation coefficient values.

Dynamic X-ray imaging of the penetration of boron carbide

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-583-Pr9-588 ◽  
Author(s):  
W. A. Gooch ◽  
M. S. Burkins ◽  
G. Hauver ◽  
P. Netherwood ◽  
R. Benck
Keyword(s):  
Boron Carbide ◽  
X Ray ◽  
X Ray Imaging

PLASMA SPRAYING OF BORON CARBIDE USING TERNARY GAS MIXTURES

2010 ◽  
Vol 14 (4) ◽  
pp. 379-388
Author(s):  
S. Janisson ◽  
Armelle Vardelle ◽  
Michel Vardelle ◽  
Pierre Fauchais ◽  
E. Meillot
Keyword(s):  
Boron Carbide ◽  
Plasma Spraying ◽  
Gas Mixtures

Effect of High Temperature on Wear Behavior of Stir Cast Aluminium/Boron Carbide Composites

2020 ◽  
Vol 22 (4) ◽  
pp. 1031-1046
Author(s):  
X. Canute ◽  
M. C. Majumder
Keyword(s):  
High Temperature ◽  
Wear Rate ◽  
Boron Carbide ◽  
Wear Behavior ◽  
Base Alloy ◽  
Weight Fraction ◽  
Sliding Velocity ◽  
Wear Properties ◽  
High Temperature Wear ◽  
The Matrix

AbstractThe need for development of high temperature wear resistant composite materials with superior mechanical properties and tribological properties is increasing significantly. The high temperature wear properties of aluminium boron carbide composites was evaluated in this investigation. The effect of load, sliding velocity, temperature and reinforcement percentage on wear rate was determined by the pin heating method using pin heating arrangement. The size and structure of base alloy particles change considerably with an increase of boron carbide particles. The wettability and interface bonding between the matrix and reinforcement enhanced by the addition of potassium flurotitanate. ANOVA technique was used to study the effect of input parameters on wear rate. The investigation reveals that the load had higher significance than sliding velocity, temperature and weight fraction. The pin surface was studied with a high-resolution scanning electron microscope. Regression analysis revealed an extensive association between control parameters and response. The developed composites can be used in the production of automobile parts requiring high wear, frictional and thermal resistance.

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