挤压后硼酸铝晶须增强铝复合材料表面的腐蚀特征

中国腐蚀与防护学报

2003, Vol. 23

Issue (4): 217-220

研究报告

本期目录 | 过刊浏览

挤压后硼酸铝晶须增强铝复合材料表面的腐蚀特征

胡津;姚忠凯;赵连城

哈尔滨工业大学材料科学与工程学

CHARACTERISTICS OF CORRODED SURFACE OFEXTRUDED ALUMINUM BORATE WHISKER REINFORCED PURE ALUMINUM COMPOSITE

Jin Hu;Zhongkai Yao;Liancheng Zhao

哈尔滨工业大学材料科学与工程学

全文: PDF(148 KB)

摘要: 利用原子力显微镜观察了挤压态Al18B4O33 w/pure Al复合材料早期腐蚀过程中表面形貌的变化特征.研究了沿与挤压方向成不同角度截取的Al18B4O33 w/pure Al复合材料在35%NaCl溶液中的腐蚀规律.结果表明：晶须与基体的界面是腐蚀易于发生的地方，点蚀首先在晶须的端部产生，随后沿着晶须与基体的界面扩展.挤压后沿与挤压方向成不同角度截取的Al18B4O33 w/pur e Al复合材料表面腐蚀坑的深度存在差别.

关键词 ：挤压, Al18B4O33, w/pure, Al复

Abstract：The changes of the surface morphology of an extrude d composite of Al18B4O33 w/pure Al during the early stages of corr osion by 3.5%NaCl solution were observed by atomic force microscopy.The features of corrosion of the composite samples with different normal angles to the extru sion orientation in 3.5%NaCl solution were studied.The results indicated that co rrosion occurred preferentially at the interface between whisker and matrix.Pitt ing occurred frequently at the end of whisker firstly and propagated along the i nterface between whisker and matrix.The number and size of pits on the surfaces of the extruded Al18B4O33 w/pure Al composite samples are differen t due to the sample surfaces with various angles to the extrusion orientation of the bulk composite.

Key words： extrusion Al18B4O33w/pure Al composite c orrosion atomic force microscopy

收稿日期: 2001-12-10

ZTFLH:

TG178.

通讯作者: 胡津

Corresponding author: Jin Hu

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引用本文:

胡津; 姚忠凯; 赵连城 . 挤压后硼酸铝晶须增强铝复合材料表面的腐蚀特征[J]. 中国腐蚀与防护学报, 2003, 23(4): 217-220 .
Jin Hu, Zhongkai Yao, Liancheng Zhao. CHARACTERISTICS OF CORRODED SURFACE OFEXTRUDED ALUMINUM BORATE WHISKER REINFORCED PURE ALUMINUM COMPOSITE. J Chin Soc Corr Pro, 2003, 23(4): 217-220 .

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2003/V23/I4/217

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