| 稀土La对渗铝层及其抗高温氧化性能的影响 |
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| 引用本文： | 朱利敏,文九巴,杨柳松.稀土La对渗铝层及其抗高温氧化性能的影响[J].材料保护,2009,42(1). |
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| 作者姓名： | 朱利敏 文九巴 杨柳松 |
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| 作者单位： | 河南科技大学材料科学与工程学院,河南,洛阳,471003 |
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| 基金项目： | 河南省教育厅科技公关基金 |
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| 摘 要： | 稀土元素La对传统的铝层的结构及其抗高温氧化性能的影响机理尚未充分定型.以低碳钢为基体,预置纯镍和Ni-La2O3复合电镀层,采用固体粉末法进行渗铝,对渗铝试样进行高温氧化试验.用光学显微镜(OM)、扫描电镜及能谱(SEM/EDAX)等方法对试样进行了分析,发现稀土元素La促进了渗铝的过程,使渗铝层中铝含量较高,质量分数为35%,并且渗层组织细小均匀,表面质量好;高温氧化后,Ni-La镀层渗铝层表面形成的氧化膜薄而致密,氧化增重较小,具有较好的抗高温氧化性能.
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| 关 键 词： | 渗铝 复合电镀 稀土 高温氧化 |
Effect of La on Formation Process and Resistance to High-Temperature Oxidation of Aluminizing Coating |
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| ZHU Li-min,WEN Jiu-ba,YANG Liu-song.Effect of La on Formation Process and Resistance to High-Temperature Oxidation of Aluminizing Coating[J].Journal of Materials Protection,2009,42(1). |
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| Authors: | ZHU Li-min WEN Jiu-ba YANG Liu-song |
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| Affiliation: | ZHU Li-min,WEN Jiu-ba,YANG Liu-song(School of Materials Science , Engineering,Henan University of Science , Tech-nology,Luoyang 471003,China) |
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| Abstract: | Low carbon steels were pre-coated with pure Ni and Ni-La2 O3 composite coatings by electrodeposition.The pre-coated steel samples were then aluminized using pack ce-mentation method,and the antioxidation performance of the alu-minizing coating at high temperatures was evaluated using high-temperature oxidation tests,aiming at revealing the effects of rare earth element La on the resistance to high-temperature oxidation of the aluminizing coating.Moreover,the composition and micro-structure of the aluminizin... |
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| Keywords: | aluminizing complex electroplating rare earth La resistance to high temperature oxidation |
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