| SiCp/Al复合材料在Cl~-作用下初期腐蚀行为 |
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| 引用本文： | 崔霞,周贤良,欧阳德来,黄芃.SiCp/Al复合材料在Cl~-作用下初期腐蚀行为[J].稀有金属材料与工程,2016,45(11):2884-2888. |
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| 作者姓名： | 崔霞 周贤良 欧阳德来 黄芃 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院,南京航空航天大学材料科学与技术学院,南昌航空大学材料科学与工程学院,南昌航空大学材料科学与工程学院 |
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| 基金项目： | 国家自然科学基金(51262023)；江西省金属材料微结构调控重点实验室开放基金(JW201323001)；轻合金加工科学与技术国防重点学科实验室(gf201401007) |
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| 摘 要： | 通过室内浸泡模拟实验方法,采用扫描Kelvin探针技术研究了SiCp/Al复合材料在Cl~-介质下初期腐蚀行为。结果表明,SiC颗粒与Al基体界面结合处是复合材料在Cl~-介质下初期腐蚀的优先发生位置,Cl~-和界面相是促进初期腐蚀发展的主要原因。随腐蚀的不断进行,复合材料先形成钝化膜,表面电位先整体正移,后钝化膜破损,表面电位整体负向移动。复合材料初期腐蚀过程表现为其钝化膜形成和逐渐破损的腐蚀特征,腐蚀产物主要为Al(OH)_3、Al_2O_3和AlCl_3。
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| 关 键 词： | 初期腐蚀 SKP SiCp/Al复合材料 |
| 收稿时间： | 2015/9/17 0:00:00 |
| 修稿时间： | 2016/5/16 0:00:00 |
Study on the initial corrosion behavior of SiCp/Al composites in Cl- containing solution |
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| CUI Xi,ZHOU Xian-liang,OUYANG De-lai and HUANG Peng.Study on the initial corrosion behavior of SiCp/Al composites in Cl- containing solution[J].Rare Metal Materials and Engineering,2016,45(11):2884-2888. |
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| Authors: | CUI Xi ZHOU Xian-liang OUYANG De-lai and HUANG Peng |
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| Affiliation: | School of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,School of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,School of Material Science and Engineering,Nanchang Hangkong University,Nanchang,School of Material Science and Engineering,Nanchang Hangkong University,Nanchang |
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| Abstract: | The initial corrosion behavior of SiCp/Al composites in Cl- containing solution was inverstigated by using immersion test and Scanning Kelvin probe (SKP) technique. The results show that the initial corrosion is preferential to occur at the interface between SiC particles and Al matrix of SiCp/Al composites in Cl- containing solution. Cl- and interfacial phase is responsible for the development of initial corrosion. The passive film formed in the initial stage, while the surface potential of SiCp/Al composites moved positively. When the corrosion process continued, the passive film finally breakdowned, resulting in the negative shift of the surface potential. The main corrosion products are Al(OH)3, Al2O3 and AlCl3. |
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| Keywords: | initial corrosion SKP SiCp/Al composites |
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