您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 4    August 2001

[PDF Download]    [Flash Online]

    

Thermal debinding dynamics of novel binder system
ZHOU Ji-cheng(周继承)1, HUANG Bai-yun(黄伯云)1,
ZHANG Chuan-fu(张传福)2, LIU Ye-xiang(刘业翔)2

1. State Key Laboratory for Powder Metallurgy,
Central South University,Changsha 410083, P.R.China;
2. Department of Metallurgical Science and Engineering,
Central South University, Changsha 410083, P.R.China

Abstract:The thermal debinding dynamics of newly developed binders for cemented carbides extrusion molding was studied. It is shown that the thermal debinding processes can be divided into two stages: low temperature region, in which the low molecular mass components (LMMCs) are removed; and high temperature region, in which the polymer components are removed. The rate of thermal debinding is controlled by diffusion mechanism. The thermal debinding activation energies were solved out by differential method and integral method. The results show that the addition of other components acted as a catalyzer can effectively decrease the activation energy of thermal debinding processes.

 

Key words: plasticizing powder extrusion molding; binder; thermal debinding mechanism; non-isothermal dynamics

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn