Effect of Nb and CeO2 on the mechanical and tribology properties of Co-based cladding coatings
Effect of Nb and CeO2 on the mechanical and tribology properties of Co-based cladding coatings
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Nb和CeO2对钴基熔覆层力学和摩擦学性能的影响
DOI：
10.1016/j.surfcoat.2016.01.007
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发表时间：
2016-02
影响因子：
5.4
通讯作者：
Gao Zonghong
中科院分区：
文献类型：
--
作者：
Fan Yang;Jin Guo;Cui Xiufang;Li Yang;Gao Zonghong
采用等离子熔覆技术在45钢上制备了Nb和CeO2改性钴基涂层。研究了Nb和CeO2对显微组织、拉伸性能和高温耐磨料磨损性能的影响。结果表明，所有涂层中均存在γ-Co、Cr23C6，含Nb和含Nb/CeO2熔覆层中均以NbC形式存在。钴基镀层具有细小的柱状晶和枝晶组织，添加Nb/CeO2后得到更细的晶粒尺寸和等轴枝晶。由于净化和晶粒细化，Nb 和 CeO2 增强体的引入对拉伸性能产生了积极的影响。复合材料的拉伸断裂机制主要由颗粒开裂控制，这是由于载荷从基体到增强体的有效传递而导致的。由于复合层中高硬度碳化物NbC的分布以及致密均匀的显微组织，Nb和CeO2变质后具有较高的高温耐磨性。
Nb and CeO2modified Co-based coatings were produced on 45 steel by plasma cladding. The effect of Nb and CeO2on microstructure, tensile property and high temperature abrasive wear resistance was investigated. Results indicate that γ-Co, Cr23C6exists in all coatings, and NbC forms in the Nb-contained and Nb/CeO2-contained cladding coatings. Co-based coating has a fine columnar crystal and dendritic microstructure, finer grain size and equiaxed dendrites are obtained by adding Nb/CeO2. The introduction of Nb and CeO2reinforcements shows a positive effect on the tensile property due to purification and grain refinement. Tensile fracture mechanism of the composites is primarily controlled by particle cracking as a result of effective load transfer from matrix to the reinforcements. A relatively high temperature wear resistance occurs with Nb and CeO2modification due to the distribution of high hardness carbide NbC in the clad coating as well as the dense and uniform microstructure.
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影响因子：
5.4
作者：
A. Farnia;F. M. Ghaini;J. Rao;V. Ocelík;J. T. Hosson
通讯作者：
A. Farnia;F. M. Ghaini;J. Rao;V. Ocelík;J. T. Hosson
影响因子：
6.7
作者：
Celik, Osman Nuri
通讯作者：
Celik, Osman Nuri
影响因子：
5.4
作者：
Madadi, F.;Shamanian, M.;Ashrafizadeh, F.
通讯作者：
Ashrafizadeh, F.
影响因子：
5.2
作者：
C. Jeyanthi;R. Siddheswaran;Pushpendra Kumar;V. Shankar;K. Rajarajan
通讯作者：
C. Jeyanthi;R. Siddheswaran;Pushpendra Kumar;V. Shankar;K. Rajarajan
影响因子：
6.2
作者：
Liu, D.;Zhang, S. Q.;Wang, H. M.
通讯作者：
Wang, H. M.