Paper Title:
The Study of Ignition Parameters for Energy Efficient Processing of High Temperature Non-Oxide Ceramics by the Micropyretic Synthesis Route
  Abstract

The influence of ignition parameters for energy efficient processing of high temperature non-oxide ceramics by the micropyretic synthesis route is studied numerically in this article. The simulation results show that a lower ignition power leads to longer ignition time to initiate reactions. An increase in the ignition time also increases the length of pre-heating zone before propagating, which further changes the initiate propagation velocity and oscillatory frequency of the temperature variations. Such changes in the initiate propagation velocity and temperature variations result in inhomogeneous structures at the ignition spot. The simulation also indicates that using a higher power to ignite the micropyretic reactions can lower the ignition time and further prevent the inhomogeneous structures from being formed at the ignition spot. However, more heat loss is noted to occur due to a high temperature gradient and the energy required to ignite the reaction. The numerical calculation indicates that there is a 20 % increase in the required energy and a 90% decrease in the required time to ignite the specimen when the ignition power is increased from 87.5 kJ/(g・s) to 962.5 kJ/(g ・s). In addition, the effect of the individual material property on ignition is also investigated.

  Info
Periodical
Edited by
Yashwant Mahajan & J. A. Sekhar
Pages
1-14
DOI
10.4028/www.scientific.net/KEM.395.1
Citation
H.P. Li, "The Study of Ignition Parameters for Energy Efficient Processing of High Temperature Non-Oxide Ceramics by the Micropyretic Synthesis Route", Key Engineering Materials, Vol. 395, pp. 1-14, 2009
Online since
October 2008
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dong Qing Zhou, Jun Li, Ying Gao, Da Wei Qu, Qi Jie Liu
Chapter 2: Optical, Electronic Materials and Industrial Application
Abstract:.To study the dual-spark ignition methods of combustion of LPG, numerical simulation is conducted on the lean burn LPG turbocharged engine by...
1032
Authors: Takahiro Namazu, Kohei Ohtani, Keisuke Yoshiki, Shozo Inoue
Chapter 17: Smart Intelligent Materials and Processes
Abstract:In this article, a new technique for controlling crack position and its propagation direction in solder-bonding using Al/Ni exothermic...
1979
Authors: Tian Li, Jun Deng, Tang Tang Bao, Zhi Jun Wu
Chapter 1: Materials Behavior
Abstract:In this article, based on a combined chemical mechanism with detailed ethanol oxidization and NO production mechanisms, a single cylinder...
244
Authors: Xiang Gou, Jin Xiang Wu, Lian Sheng Liu, En Yu Wang, Jun Hu Zhou, Jian Zhong Liu, Ke Fa Cen
Chapter 1: Engineering Thermophysics
Abstract:Pulverized coal ignition time is one of crucial parameters in coal ignition process. Based on a general heat absorption equation without...
120
Authors: Li Yan Feng, Chun Huan Zhang, Chang Jun Xiong
Chapter 3: General Mechanical Engineering
Abstract:The working process of a lean burn natural gas spark ignition engine was simulated with a 3-D CFD software package AVL-FIRE. Such simulations...
916