Structure and phase composition of zinc sulfide produced by self-propagating high-temperature synthesis

1998 ◽  
Vol 34 (1) ◽  
pp. 34-39 ◽  
Author(s):  
S. V. Kozitskii ◽  
V. P. Pisarskii ◽  
O. O. Ulanova
Keyword(s):  
Phase Composition ◽  
High Temperature ◽  
Zinc Sulfide ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

scholarly journals Effect of powerful ultrasound on the combustion processes and phase composition of refractory compounds of titanium at the self-propagating high-temperature synthesis

2019 ◽  
Vol 62 (6) ◽  
pp. 674-684
Author(s):  
V. V. Klubovich ◽  
M. M. Kulak ◽  
B. B. Khina
Keyword(s):  
Heat Transfer ◽  
Phase Composition ◽  
High Temperature ◽  
The Self ◽  
Temperature Synthesis ◽  
Ultrasound Frequency ◽  
Refractory Compounds ◽  
High Temperature Synthesis ◽  
Combustion Processes ◽  
Heterogeneous Interactions

The effect of ultrasound oscillations (USO) on the heat transfer conditions between a specimen and environment is examined using a specially developed experimental facility. The influence of the USO amplitude on the combustion temperature and velocity as well as on the phase composition and crystal lattice parameters of the synthesized compounds is studied for the self-propagating high-temperature synthesis (SHS) in Ti–С(Si,B) systems. The heat transfer coefficient on the surface of a specimen during its oscillations with an ultrasound frequency is assessed. Possible mechanisms of the effect of USO on the SHS process are considered. It is demonstrated that a decrease in the SHS temperature is connected with cooling the specimen due to forced convection of a surrounding gas, while a change in a phase composition of the synthesized material and the crystallographic parameters of the phases occurs due to changes in the conditions of high-temperature heterogeneous interactions in the SHS wave.

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