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The Strength and Hardness of Metal Matrix Composites by Binder Additives

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Abstract:

20 vol.% aluminum borate whisker (Al18B4O33w) reinforced AC4CH alloy composite was fabricated by squeeze casting method. The matrix is controlled its impurities, which make metal alloys, especially AC4CH alloy that is made by restraining 0.2% Iron and aluminum to make a matrix material. The perform of composite materials was made from Al18B4O33w with 5% regulated three kinds of inorganic binders, SiO2, Al2O3 and TiO2 sol, respectively and then sintered at 1373K. The composites were obtained by squeeze cast infiltration of the molten alloy to the perform. Then it was squeeze casting into the matrix. The status of adhesions of whisker perform was Observed by SEM. Micro-Vickers hardness and tensile properties at the room temperature were estimated. Al18B4O33w/ AC4CH composites containing TiO2 sol has excellent properties on tensile properties and microvickers hardness compared with the other composites without inorganic binder, containing SiO2 and Al2O3 sol inorganic binder.

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Periodical:

Key Engineering Materials (Volumes 297-300)

Pages:

489-494

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.297-300.489

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Online since:

November 2005

Authors:

Won Jo Park, Hae Young Jung, Sunchul Huh, Han Ki Yoon, Kang Kil Lee

Keywords:

Aluminum Borate Whisker, Inorganic Binder, Metal Matrix Composite (MMC), Squeeze Casting, Whisker Perform

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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