| Fe-Cr-Si合金喷焊层组织及抗高温氧化机理研究 |
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| 引用本文： | 由臣,陈民芳,孙家枢,王培海.Fe-Cr-Si合金喷焊层组织及抗高温氧化机理研究[J].兵器材料科学与工程,2003,26(6):23-25. |
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| 作者姓名： | 由臣 陈民芳 孙家枢 王培海 |
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| 作者单位： | 天津理工学院,材料科学与工程系,天津,300191 |
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| 摘 要： | 设计了一种新型Fe -Cr-Si合金 ,并用等离子喷焊方法制备成涂层 ,借助SEM、SEM -EDX及XRD ,研究了Fe -Cr-Si合金涂层的组织形貌、成分分布及其高温氧化行为。结果表明 ,涂层由大量平直的初生Cr3 Si树枝晶和Fe、Cr、Si复杂相基体构成 ,成分呈梯度分布 ,界面为冶金态结合。在 85 0℃和大气环境下 ,其氧化动力学曲线呈抛物线状 ,氧化膜主要是由Cr2 O3 、SiO2 及尖晶石类氧化物FeCr2 O4组成
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| 关 键 词： | 硅化物合金涂层 形貌与成分分布 高温氧化 氧化动力学曲线 |
| 文章编号： | 1004-244X(2003)06-0023-03 |
| 修稿时间： | 2003年4月29日 |
Study on morphology and high temperature oxidation mechanism of Fe-Cr-Si alloy spray- welding coating |
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| YOU Chen,CHEN Min-fang,SUN Jia-shu,WANG Pei-hai,.Study on morphology and high temperature oxidation mechanism of Fe-Cr-Si alloy spray- welding coating[J].Ordnance Material Science and Engineering,2003,26(6):23-25. |
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| Authors: | YOU Chen CHEN Min-fang SUN Jia-shu WANG Pei-hai |
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| Abstract: | A new alloy Fe-Cr-Si was designed and prepared as coating by plasma spray-welding. Using SEM, SEM-EDX and XRD, the morphology, profiles of elements and oxidation behavior of Fe-Cr-Si alloy coating were investigated. The results show that coating microstructure consisted of a large number of original straight branch-grains of Cr 3Si and complicated phase contained Fe, Cr, Si. The interface between coating and matrix is metallurgy bonding because profiles of Fe, Cr and Si elements were continuous. The oxidation dynamic curve of coating was similar to parabola at 850℃ in the air. The oxidation film consisted of Cr 2O 3?SiO 2 FeCr 2O 4. |
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| Keywords: | silicide-alloy coating morphology and profiles of elements high temperature oxidation oxidation kinetics curve |
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