引用本文:王建江,刘宏伟,杜心康,张龙.Al2O3复相陶瓷涂层的SHS反应火焰喷涂过程[J].中国表面工程,2004,(4):28~31
.Investigation on Process of SHS Reactive Flame Spraying Al2O3 Multiphase Ceramic Coatings[J].China Surface Engineering,2004,(4):28~31
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Al2O3复相陶瓷涂层的SHS反应火焰喷涂过程
王建江,刘宏伟,杜心康,张龙
作者单位
摘要:
基于自蔓延高温台成技术(SHS)的反应火焰喷椽技术，用氧-乙炔火焰引燃Al-Cuo团聚粉，使之发生自蔓延反应．在钢基表面制备了Al2O3复相陶瓷涂层。通过水淬熄试验截取飞行粒子的中间状态，对经水拎后的粒子及喷涂涂层进行物相与组执分析，从而给出了SHS反应火焰喷涂Al2O3复相陶瓷椽层的基本过程．即各团聚颗粒构成独立的徽小反应单元，经历Al熔化和Cuo分解的反应孕育、Al与Cu2O的飞行反应燃饶、与基体碰撞并继续反应、结构转变与凝固4个阶段，最终形喊Al2O3复相陶瓷馀层。
关键词:  SHS 反应火焰喷涂 Al2O3 陶瓷 涂层
DOI：
分类号:TB39
基金项目:国家自然科学基金资助项目(50272084)
Investigation on Process of SHS Reactive Flame Spraying Al2O3 Multiphase Ceramic Coatings
WANG Jian-jiang1  2  LIU Hong-wei2  DU Xin-kang2  ZHANG long2
Abstract:
Using SHS Reactive Flame Spraying (RFS) technology, an Al2O3 multi-phased ceramic coating was prepared on iron substrate with Al and CuO as main reactants, the SHS process was ignited by oxyacetylene flame. The state of water-quenching agglomerated particles at different distance, phase constituent and microstructure of the coatings were observed and analyzed. The process of SHS RFS Al2O3 multi-phased ceramic coating was studied. It was found that during the spraying process, the agglomerated particles, acting as independent reactive units, went through four successive stages: Al melted and CuO decomposed, Al and Cu2O reacted, they collided with iron substrate and continually reacted, and structure transformed and solidified, finally the Al2O3-Based multi-phased ceramic coating was completed.
Key words:  SHS,Reactive flame spray,Al_2O_3 Ceramic,Coatings
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