EFFECT OF REINFORCEMENT PARTICLE ON GROWTH OF MICROARC OXIDATION FILM ON ALUMINUM MATRIX COMPOSITE
WenBin Xue
北京师范大学低能核物理研究所射线束材料改性开放实验室
Cite this article:
WenBin Xue. EFFECT OF REINFORCEMENT PARTICLE ON GROWTH OF MICROARC OXIDATION FILM ON ALUMINUM MATRIX COMPOSITE. Acta Metall Sin, 2006, 42(4): 350-354 .
Abstract A thick ceramic film on SiC/2024 aluminum matrix composite was fabricated by plasma microarc discharge method. The growing curve of film was determined, and the morphology and phase composition of film were analyzed by scanning electron microscopy and X-ray diffraction. The morphology and distribution of reinforcement particles were emphatically observed, and then a growth model of microarc oxidation film on metal matrix composites was proposed. Under microarc discharge sintering, most SiC reinforcement particles have been oxidized, but only a few residual SiC particles still remain in the film close to the composite/film interface. Although the SiC particles hinder the film growth, the continuity of film has not been disrupted. That is completely different from conventional anodizing on metal matrix composites.
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