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| 铁基非晶纳米晶涂层组织与冲蚀性能分析 |
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梁秀兵1, 程江波1,2, 白金元1, 陈永雄1, 徐滨士1
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1.装甲兵工程学院, 装备再制造技术国防科技重点试验室, 北京 100072;2.上海交通大学, 材料科学与工程学院, 上海 200240
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| 摘要: |
| 利用高速电弧喷涂技术成功制备了FeCrBSiMnNbY系和FeBSiNbCr系非晶纳米晶涂层.采用扫描电镜、X射线衍射仪等设备对涂层的组织结构进行了表征,重点分析了非晶的形成机制,并对涂层的高温冲蚀性能进行了研究.结果表明,FeCrBSiMnNbY系和FeBSiNbCr系涂层的组织主要由非晶相和α(Fe,Cr)相纳米晶组成;两种涂层结构致密,组织均匀,孔隙率含量分别为1.7%和1.2%;FeBSiNbCr系非晶纳米晶涂层具有良好的耐高温冲蚀性能,随着攻角增加,涂层冲蚀率随之增加;冲蚀温度升高,涂层耐冲蚀性能也随着提高。 |
| 关键词: 非晶纳米晶 涂层 高温冲蚀 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目(50735006);国防科技实验室基金资助项目(914OC85020508OC85) |
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| Microstructure and erosion properties of Fe-based amorphous and nanocrystalline coatings |
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LIANG Xiubing1, CHENG Jiangbo1,2, BAI Jinyuan1, Chen Yongxiong1, XU Binshi1
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1.National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, China;2.School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
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| Abstract: |
| FeCrBSiMnNbY and FeBSiNbCr amorphous coatings were fabricated by high velocity wire arc spraying process.The microstructure and phase composition of the coatings were characterized by SEM, EDAX and XRD.The formation mechanism of amorphous phase was discussed.The elevated temperature erosion behavior of the coating was also investigated.The results show that the microstructures of both coatings consist of amorphous phase and α(Fe, Cr)nanocrystalline phase.Both of the coatings are fully dense with low porosity of 1.7% and 1.2%, respectively.The coatings exhibit better erosion resistance at lower impact angles.With increasing the erosion temperature, the erosion rates of the coatings decrease.The FeBSiNbCr coating has better elevated temperature erosion resistance than that of the FeCrBSiMnNbY coating. |
| Key words: amorphous and nanocrystalline coating elevated temperature erosion |
