Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2005 | Volume: 5 | Issue: 2 | Page No.: 202-206
DOI: 10.3923/jas.2005.202.206
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

The Influence of Ignition Manner on Micropyretic Synthesis of Low Exothermic Reaction with Ni+Al

H.P. Li

Abstract:
The influence of ignition manner on micropyretic synthesis of low exothermic reaction with Ni+Al is numerically investigated in this study. The different ignition powers and ignition regions are chosen to illustrate the influences on the length of pre-heating zone and propagation velocity of the specimens. The numerical results indicate that a lower ignition power or igniting in the center region accelerates the heat loss. Thus, the length of pre-heating zone is increased and the average propagation velocity is correspondingly decreased. In the extreme case, the combustion front may not complete the propagation for the reaction with a lower pre-exponential factor. In addition, it is also shown that a higher ignition power consumes the additional ignition energy to ignite the specimens. Such an increase in the required ignition energy enhances the processing cost, but also probably results in the unstable propagation. The optimal ignition manner for micropyretic synthesis of Ni+Al reaction is generated in this research.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

H.P. Li , 2005. The Influence of Ignition Manner on Micropyretic Synthesis of Low Exothermic Reaction with Ni+Al. Journal of Applied Sciences, 5: 202-206.

DOI: 10.3923/jas.2005.202.206

URL: https://scialert.net/abstract/?doi=jas.2005.202.206

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom