Thermal explosion in self-propagating high-temperature synthesis systems with allowance for chemical gas transport

1993 ◽  
Vol 29 (5) ◽  
pp. 591-596
Author(s):  
I. N. Dorozhevets ◽  
E. P. Kostogorov
Keyword(s):  
High Temperature ◽  
Thermal Explosion ◽  
Gas Transport ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

Kinetics of mechanically activated high temperature synthesis of Ni3Al in the thermal explosion mode

2011 ◽  
Vol 19 (7) ◽  
pp. 833-840 ◽  
Author(s):  
Valery Yu. Filimonov ◽  
Michail A. Korchagin ◽  
Evgeny V. Smirnov ◽  
Alexander A. Sytnikov ◽  
Vladimir I. Yakovlev ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermal Explosion ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Kinetics Of

Synchrotron in situ studies of mechanical activation treatment and γ-radiation impact on structural-phase transitions and high-temperature synthesis parameters during the formation of γ-(TiAl) compound

2019 ◽  
Vol 26 (5) ◽  
pp. 1671-1678 ◽  
Author(s):  
Marina Loginova ◽  
Alexey Sobachkin ◽  
Alexander Sitnikov ◽  
Vladimir Yakovlev ◽  
Valeriy Filimonov ◽  
...  
Keyword(s):  
High Temperature ◽  
Mechanical Activation ◽  
Thermal Explosion ◽  
Powder Mixture ◽  
Maximum Temperature ◽  
Γ Irradiation ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
The Impact

In situ synchrotron studies of structure and phase formation dynamics in mechanically activated (t = 7 min, power density 40 g) and mechanically activated with subsequent irradiation by γ-quanta 60Co powder mixture (Ti 64 wt% + Al) during high-temperature synthesis by the method of thermal explosion using induction heating are described. In situ high-temperature synthesis was carried out on the created experimental complex adapted for synchrotron X-ray diffraction methods. The sequence of formation and time–temperature interval of the metastable and main phases were determined. The impact of preliminary mechanical activation and of γ-irradiation on the macrokinetic parameters of the synthesis were studied experimentally in situ. It has been established that the impact of γ-irradiation on the mechanically activated powder mixture of the composition Ti 64 wt% + Al leads to a change in the thermal parameters of combustion: the maximum synthesis temperature and the burning rate decrease. The heating rate for the non-irradiated mixture is 204.8 K s−1 and that for the irradiated mixture is 81.6 K s−1. The dependences of mass fractions of the synthesized compounds on time and temperature were calculated from the stage of preheating until completion of the thermal explosion. A single-phase equilibrium product of the composition γ-(TiAl) is formed in γ-irradiated mechanically activated mixture when the system reaches maximum temperature. The synthesized product of the mechanically activated mixture without γ-irradiation contains 72% γ-(TiAl); TiAl3 (26%) and residual Ti (2%) are also observed.

The Obtaining of the Intermetallic Compounds of Ni-Al System by Self-Propagating High Temperature Synthesis and Thermal Explosion

2015 ◽  
Vol 1114 ◽  
pp. 135-142
Author(s):  
Mihai Cojocaru ◽  
Florică Tudose
Keyword(s):  
High Temperature ◽  
Intermetallic Compounds ◽  
Thermal Explosion ◽  
Melting Temperature ◽  
Aerospace Industry ◽  
Point Of View ◽  
Temperature Synthesis ◽  
Practical Point ◽  
High Temperature Synthesis

The intermetallic compounds (IMC) of Ni-Al system exhibit interest both by theoretical and practical point of view: theoretically, due to particular aspects in relation to their synthesis and practically, due to their qualities that recommend them for the top industries such as, for example, the aerospace industry. In this paper are shown the results of researches on obtaining of high temperature compounds of Ni-Al system by self-propagating high temperature synthesis and thermal explosion, through the initiation of process at a temperature below the melting temperature of the easy fusible component.

Investigation of the Possibility for Control of High-Temperature Synthesis of Nanomaterials

2019 ◽  
Vol 942 ◽  
pp. 1-10 ◽  
Author(s):  
Alexander I. Sechin ◽  
Olga B. Nazarenko ◽  
Yuliya Amelkovich
Keyword(s):  
High Temperature ◽  
Thermal Explosion ◽  
Combustion Wave ◽  
Induction Time ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Combustion Wave Propagation ◽  
Heated Body ◽  
Aluminum Nanopowder ◽  
Synthesis Of Nanomaterials

The feasibility of creating conditions for control of high-temperature synthesis (SHS) of nanomaterials has been studied. Experiments were carried out to determine the velocity of the combustion wave propagation of aluminum nanopowder obtained by electric explosion. In the course of the study, the factors influencing formation of the induction time: the thermal diffusivity of the substrate, the method of initiation of the combustion wave (flame, spark, heated body), the induction time between the initiating front and the front of the thermal explosion were considered. The relation describing the time of induction of thermal explosion is established.

A study of self-propagating high-temperature synthesis of NiAl in thermal explosion mode

2002 ◽  
Vol 50 (4) ◽  
pp. 757-773 ◽  
Author(s):  
A. Biswas ◽  
S.K. Roy ◽  
K.R. Gurumurthy ◽  
N. Prabhu ◽  
S. Banerjee
Keyword(s):  
High Temperature ◽  
Thermal Explosion ◽  
Temperature Synthesis ◽  
High Temperature Synthesis
Sign in / Sign up

Export Citation Format

Share Document