Effect of Al content on the self-propagating high-temperature synthesis reaction of Al–Ti–C system in molten magnesium

2004 ◽  
Vol 366 (1-2) ◽  
pp. L9-L12 ◽  
Author(s):  
H.Y. Wang ◽  
Q.C. Jiang ◽  
X.L. Li ◽  
F. Zhao
Keyword(s):  
High Temperature ◽  
The Self ◽  
Synthesis Reaction ◽  
Temperature Synthesis ◽  
Al Content ◽  
High Temperature Synthesis ◽  
Molten Magnesium

Reaction mechanism of self-propagating high-temperature synthesis reaction in the Ni–Ti–B4C system

2008 ◽  
Vol 23 (9) ◽  
pp. 2519-2527 ◽  
Author(s):  
Y.F. Yang ◽  
H.Y. Wang ◽  
R.Y. Zhao ◽  
Y.H. Liang ◽  
Q.C. Jiang
Keyword(s):  
High Temperature ◽  
Reaction Mechanism ◽  
Intermetallic Compounds ◽  
Eutectic Point ◽  
The Self ◽  
Mutual Diffusion ◽  
Synthesis Reaction ◽  
Temperature Synthesis ◽  
Early Appearance ◽  
High Temperature Synthesis

The SHS reaction in the Ni–Ti–B4C system starts with the formation of Ni–Ti and Ni–B intermetallic compounds from the solid interacted reaction among the reactants and, subsequently, the formation of Ni–Ti and Ni–B liquid at the eutectic point. Meanwhile, some C atoms from the reaction between Ni and B4C can dissolve into Ni–Ti liquid to form TiC. The heat generated from these reactions can promote the mutual diffusion of Ni–Ti–C and Ni–B liquid and simultaneously accelerate the formation of Ni–Ti–C–B liquid. Finally the precipitation of TiC and TiB2 occur when the C and B atoms in the liquid become supersaturated. The addition of Ni not only promotes the occurrence of the self-propagating high temperature synthesis (SHS) reaction by forming Ni–Ti liquid, but also accelerates the SHS reaction by forming Ni–B liquid and dissociative C. The early appearance of dissociative C from the reaction between Ni and B4C causes the formation of TiC prior to that of TiB2.

EFFECT OF Al CONTENT ON THE COMBUSTION SYNTHESIS OF (TiB2-Al2O3)/Al PRODUCTS FROM AN Al-TiO2-B2O3 SYSTEM

2010 ◽  
Vol 24 (15n16) ◽  
pp. 3203-3208
Author(s):  
LEI ZHAN ◽  
PING SHEN ◽  
QICHUAN JIANG
Keyword(s):  
High Temperature ◽  
Delay Time ◽  
Combustion Temperature ◽  
Ignition Delay Time ◽  
The Self ◽  
Temperature Synthesis ◽  
Al Content ◽  
High Temperature Synthesis ◽  
Maximum Combustion Temperature ◽  
Opposite Tendency

The effect of Al content on the self-propagating high-temperature synthesis (SHS) reaction among Al , TiO 2 and B 2 O 3 was experimentally investigated. The Al content plays an important role in controlling the reaction behaviors. With the increase in reactant Al , the maximum combustion temperature decreases, the propagating wave velocity first increases and then decreases, while the ignition delay time shows an opposite tendency. More importantly, the increase of the Al content in the reactants has an insignificant effect on the phase constitutions of the synthesized products but reduces the size of the synthesized TiB 2 particles.

scholarly journals Effect of Cu addition and heat treatment self-propagating high temperature synthesis reaction in Al-Ti-C system

2008 ◽  
Vol 40 (2) ◽  
pp. 207-214 ◽  
Author(s):  
Y.X. Li ◽  
J. Hu ◽  
Y.H. Liu ◽  
Z.X. Guo
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Combustion Temperature ◽  
The Self ◽  
Synthesis Reaction ◽  
Reaction Products ◽  
Temperature Synthesis ◽  
Rigid Framework ◽  
High Temperature Synthesis ◽  
Al2cu Phase

Effect of Cu addition and heat treatment on the self-propagating high temperature synthesis reaction have been investigated. The results show that Cu reacts with Al to form Al2Cu phase. With the addition of Cu, the combustion temperature of the system decreases and the porosity of the products is reduced, the size of TiC particulate decreases in the SHS reaction products. Specially, when heat treatment is carried out for the sintering products at 800 ?C, the rigid framework (sintering neck) between TiC particles was formed.

Influence of Cu addition on the self-propagating high-temperature synthesis of Ti5Si3 in Cu–Ti–Si system

2008 ◽  
Vol 111 (2-3) ◽  
pp. 463-468 ◽  
Author(s):  
H.Y. Wang ◽  
S.J. Lü ◽  
M. Zha ◽  
S.T. Li ◽  
C. Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
The Self ◽  
Temperature Synthesis ◽  
High Temperature Synthesis
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