摘要
基于静态自蔓延过程,采用Al Fe2O3 CrO3燃烧体系,制备出变口径的内衬陶瓷层不锈钢喷嘴,其反应过程工艺稳定,内衬陶瓷层厚度均匀、致密、性能可靠.通过试验研究了影响工艺性能的因素,探讨了Al Fe2O3 CrO3燃烧体系的燃烧机理,试验结果证实自蔓延反应是不平衡的过程,氧化 还原反应进行不彻底,陶瓷层的成分比较复杂.研究表明,与添加传统的SiO2、CaF2相比,采用一种新型的添加剂配方可显著提高陶瓷层的力学性能,改善其表面质量.
A kind of ceramic-lined stainless steel nozzle is produced by the static self-propagating high-temperature syntheses (SHS) process with the Al-Fe2O3-CrO3 combustion system. This technique is stable. The ceramic-lined layer is compact with uniform thickness and reliable performance. The combustion mechanism of the combustion system and the factors influencing the syntheses process are studied by experimentation. The X-ray diffraction result shows that the composition of the ceramic layer is very complex, which verifies that the oxidation-reduction reaction, accompanied with a series of metallurgical processes in the static SHS, is incomplete and unbalanced. An additive is developed, which significantly improves the mechanical properties of the ceramic-lined layer and its surface quality.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2003年第7期738-741,共4页
Journal of Xi'an Jiaotong University
关键词
静态自蔓延
烧结
内衬陶瓷喷嘴
添加剂
Additives
Ceramic materials
Chemical reactions
Combustion
Performance
Test facilities
X ray diffraction analysis
