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Microstructure and Hardness of Nano-Sized Fe-Based Self-Fluxing Alloy Powder with SiC Particles

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Abstract:

The Fe-based self-fluxing alloy powders and SiC particles were mixed and milled by high energy ball-milling, and their microstructure and micro-hardness were investigated after subsequent compaction and sintering. The initial alloy powders with a mean size of approximately 80 μm were fined to 2.1 μm after milling at 800 rpm for 5 h. However, the powder mixture of alloy powder and SiC particle showed much larger powder size compared to the initial alloy powders. The bulk composites were obtained from the powder mixture by compaction under a pressure of 800 MPa for 10 min and sintering at 1073 K for 3 h. The composites had much higher micro-hardness of more than 700 H v compared to alloy powder. The micro-hardness of composites slightly increased with the content of SiC particles.

Keywords: FE-BASED SELF-FLUXING ALLOY POWDER; HIGH ENERGY BALL MILLING; MICRO-HARDNESS; MICROSTRUCTURE; SIC PARTICLES

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2012.4704

Publication date: 2012-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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