FEATURE OF INTERNAL OXIDATION ANDOXIDES DISTRIBUTIPON OF Cu-Al POWDER SINTERING ALLOY

J Chin Soc Corr Pro

2001, Vol. 21

Issue (1): 59-64 DOI:

Research Report

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FEATURE OF INTERNAL OXIDATION ANDOXIDES DISTRIBUTIPON OF Cu-Al POWDER SINTERING ALLOY

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沈阳工业大学材料科学与工程学院

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Abstract Internal oxidation treatment were carried out in an internal oxidizing apparatus for a Cu-0.75%Al powder sintering alloy, and microstructure were inve stigated by means of SEM, TEM and X-ray. Results showed that the internal oxides of the spherical α-Al2O3 particles were distributed within grain and the n etw ork oxides existed at grain boundary among internal oxidation layer.Concentratio n of ［Al］,［O］ atoms were regularly distributed within the layer. Through int ernal oxidation treatment, the formed internal oxides produced the volume expand ing, which improved the densification of Cu-Al powder sintering alloy.

Key words: Cu-Al powder alloy internal oxidation oxide diffusi on mechanism

Received: 22 December 1999

ZTFLH:

TG156.98

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. FEATURE OF INTERNAL OXIDATION ANDOXIDES DISTRIBUTIPON OF Cu-Al POWDER SINTERING ALLOY. J Chin Soc Corr Pro, 2001, 21(1): 59-64 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2001/V21/I1/59

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