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

J Chin Soc Corr Pro

2003, Vol. 23

Issue (4): 217-220 DOI:

Research Report

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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

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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

Received: 10 December 2001

ZTFLH:	TG178.
	TB331

Corresponding Authors: Jin Hu

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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/EN/ OR https://www.jcscp.org/EN/Y2003/V23/I4/217

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