A tungsten carbide-alumina compound ceramic made by high temperature synthesis

1996 ◽  
Vol 51 (4) ◽  
pp. 44
Keyword(s):  
High Temperature ◽  
Tungsten Carbide ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

scholarly journals Self-propagating High-temperature Synthesis of Materials Based on Tungsten Carbide for One-Pot Hydrolysis-Hydrogenolysis of Cellulose Into Ethylene Glycol and 1,2-Propylene Glycol

2019 ◽  
pp. 269-281
Author(s):  
Nikolay V. Gromov ◽  
Тatiana B. Medvedeva ◽  
Ivan А. Lukoyanov ◽  
Alekasandr А. Zhdanok ◽  
Vladimir А. Poluboyarov ◽  
...  
Keyword(s):  
High Temperature ◽  
Ethylene Glycol ◽  
Tungsten Carbide ◽  
Propylene Glycol ◽  
Reaction Rate ◽  
Total Yield ◽  
Temperature Synthesis ◽  
One Pot ◽  
Catalytic Systems ◽  
High Temperature Synthesis

Catalytic systems based on tungsten carbide (WnC) containing mainly W2C were obtained by the method of self-propagating high-temperature synthesis from a mechanochemically activated mixture of tungsten oxide, metallic magnesium, carbon black and CaCO3. The phase composition of the formed materials was shown to depend on the amount of CaCO3. The catalytic properties of the materials were tested in the hydrolysis-hydrogenation of cellulose to ethylene glycol (EG) and 1,2-propylene glycol (PG). It was established that in the presence of WnC the main products of the reaction were EG and PG with a ratio of PG/EG – 1.5-1.8. The deposition of nickel nanoparticles on the WnC surface increased the reaction rate and product yields. The maximum total yield of diols was 47.1 mol. %.

High temperature synthesis of nickel aluminide alloys with tungsten carbide

2020 ◽  
pp. 31-34
Author(s):  
S. N. Khimukhin ◽  
◽  
V. B. Deev ◽  
E. Kh. Ri ◽  
E. D. Kim ◽  
...  
Keyword(s):  
High Temperature ◽  
Tungsten Carbide ◽  
Nickel Aluminide ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

New isopropanol dehydration catalyst based on tungsten carbide prepared by modified self-propagating high-temperature synthesis

2011 ◽  
Vol 52 (6) ◽  
pp. 851-854 ◽  
Author(s):  
A. R. Zurnachyan ◽  
Kh. V. Manukyan ◽  
S. L. Kharatyan ◽  
V. A. Matyshak ◽  
R. A. Mnatsakanyan
Keyword(s):  
High Temperature ◽  
Tungsten Carbide ◽  
Temperature Synthesis ◽  
Isopropanol Dehydration ◽  
High Temperature Synthesis

Preparation of Tungsten Carbide Nanopowders by Self-propagating High-Temperature Synthesis

2004 ◽  
Vol 40 (10) ◽  
pp. 1043-1048 ◽  
Author(s):  
I. P. Borovinskaya ◽  
T. I. Ignat'eva ◽  
V. I. Vershinnikov ◽  
N. V. Sachkova
Keyword(s):  
High Temperature ◽  
Tungsten Carbide ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

Synthesis of Alumina-Tungsten Carbide Composites by Self-Propagating High Temperature Synthesis Process

2011 ◽  
Vol 415-417 ◽  
pp. 226-231
Author(s):  
Xin Wei
Keyword(s):  
High Temperature ◽  
Tungsten Carbide ◽  
Equilibrium Composition ◽  
Synthesis Process ◽  
X Ray Diffraction ◽  
Temperature Synthesis ◽  
Minimization Method ◽  
X Ray ◽  
High Temperature Synthesis ◽  
Microscope Technique

Alumina-Tungsten Carbide (Al2O3-WC) composites were synthesized by self-propagating high temperature synthesis (SHS) from a powder mixture of WO3-C-Al. The reaction was carried out in a SHS reactor under static argon gas at a pressure of 0.5 MPa. The standard Gibbs energy minimization method was used to calculate the equilibrium composition of the reacting species. The effects of carbon mole ratio in precursor mixture and diluents of NaCl and Al2O3 on the Al2O3-WC conversion were investigated using X-ray diffraction and scanning electron microscope technique. The as-synthesized products of Al2O3-WC2-WC powders were concurrently formed and the reduction of W2C phase was found when added diluents in precursors.

Hardening of metal surface via self-propagating high-temperature synthesis in thin films

2007 ◽  
Vol 43 (4) ◽  
pp. 239-242
Author(s):  
S. Kh. Suleimanov ◽  
O. A. Dudko ◽  
V. G. Dyskin ◽  
Z. S. Settarova ◽  
M. U. Dzhanklych
Keyword(s):  
Thin Films ◽  
High Temperature ◽  
Metal Surface ◽  
Temperature Synthesis ◽  
High Temperature Synthesis
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