Fe-Cr-Mo-B-C-P非晶合金涂层的非等温晶化动力学  

Kinetics of Non-isothermal Crystallization of Fe-Cr-Mo-B-C-P Amorphous Alloy Coatings

作　　者：谭礼明 杨凯[2] 袁建辉[1] 赵华玉[2] 陶顺衍[2] 丁传贤[2] TAN Liming;YANG Kai;YUAN Jianhui;ZHAO Huayu;TAO Shunyan;DING Chuanxian(School of Materials Engineering,Shanghai University of Engineering and Technology,Shanghai 201620,China;Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China)

机构地区：[1]上海工程技术大学材料工程学院,上海201620 [2]中国科学院上海硅酸盐研究所,上海201899

出　　处：《中国表面工程》2019年第4期141-150,共10页China Surface Engineering

基　　金：国家自然科学基金(51302299,51772311);上海市自然科学基金(17ZR1434700)。

摘　　要：采用大气等离子体喷涂技术制备Fe-Cr-Mo-B-C-P非晶合金涂层,利用XRD和SEM检测喷涂态涂层样品的物相和形貌。通过差示扫描量热分析方法(DSC),在不同升温速率下连续加热测得涂层的特征温度。分别利用Kissinger,Augis-Bennett和Ozawa方程计算相应的活化能(Ec和Ep),并用Matusita–Sakka方程计算Avrami指数n进而分析晶化机制。结果表明:通过调控等离子体喷涂工艺参数可成功制备出铁基非晶涂层;随着升温速率的增大,Fe-Cr-Mo-BC-P非晶合金涂层相应的特征温度也逐渐上升,在晶化过程中存在显著的动力学效应。Fe-Cr-Mo-B-C-P amorphous alloy coating was prepared by atmospheric plasma spraying.The phase and morphology of as-sprayed coating samples were detected by X-ray Diffractometer(XRD)and scanning electron microscope(SEM).The characteristic temperatures of the coating was measured by differential scanning thermal analysis(DSC)methods at different heating rates.The corresponding activation energy(Ec and Ep)was calculated,based on the Kissinger,Augis-bennett and Ozawa equations respectively.The Avrami index n was calculated by Matusita–Sakka equation,and the crystallization mechanism was analyzed.Results show that the Fe-based amorphous coating can be successfully prepared by controlling and optimizing the plasma spraying parameters.With the increase of the heating rate,the corresponding characteristic temperature of Fe-Cr-Mo-B-C-P amorphous coating gradually increased.There is a significant kinetic effect in the crystallization process.

关 键 词：大气等离子体喷涂 铁基非晶涂层 热稳定性 晶化动力学 

分 类 号：TG139.8[一般工业技术—材料科学与工程]