摘要
利用等离子激发原位反应在碳钢表面合成了Cr-Al_2O_3金属陶瓷涂层。借助扫描电镜、电子探针、X射线衍射仪和显微硬度计对涂层的组织、结构和性能进行了测试。结果表明,涂层的主要组成相为Cr和Al_2O_3;涂层的微观组织形貌是以树枝状Al_2O_3陶瓷为骨架,金属晶粒Cr分散在Al_2O_3陶瓷相的周围;涂层的硬度高于基体,硬度可达1630HV;在其它工艺参数不变的条件下,电流越大,涂层越厚;利用等离子原位合成技术处理的抽油泵管,其使用寿命分别高于未处理、激光淬火及电镀处理的管道。
The Cr-Al2O3 cermet coating on carbon steel was obtained by plasma in-situ synthesis. The microstructure and properties of the coating were investigated through scanning electron microscope, electron probe microanalyser, X-Ray diffractometer and microhardness tester. The results show that the microstructure of the cermet coating is mainly composed of dendritic Al2O3 cermet and Cr metallic particle. The maximum microhardness of the coating is 1630 HV,which is higher than that of the steel substrate. On the condition that the other processing parameters are invariant,the larger the current is, the thicker the coating is. The service life of oil-well pump pipe treated by plasma in-situ synthesis is longer than that of the untreated or laser-quenched or electroplated pipes.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2006年第11期16-19,共4页
Heat Treatment of Metals
基金
国家高技术研究发展计划(863计划)项目(2004AA420030)
国际重点合作项目(2005DFA70480)
