Effect of Sintering Temperature on Structure and Properties of Al₂O₃/Ni-P Composites with Interpenetrating Phases

Abstract:

An Al2O3/Ni-P composite was formed by hot pressing of alumina powder, coated with chemically plated nano Ni-P. The powders were consolidated at room temperature, 600 and 1000oC. The consolidated specimens were studied by SEM, TEM/HRTM, MFM (magnetic force microscopy) and tested or hardness. It was found that the fabrication method results in a structure of interpenetrating phases of high electric conductivity and that samples consolidated at room temperature and sintered at 600oC retain the nanometric grain size of the metallic phase. Hardness measurements are discussed in terms of the fabrication temperature and structure of the composites.

• Periodical: Solid State Phenomena (Volume 106)
• Pages: 161-166
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.106.161
• Online since: September 2005
• Authors: J. Michalski, M.J. Woźniak, K. Konopka, J. Bieliński, Stanislaw Gierlotka, Krzysztof Jan Kurzydlowski
• Keywords: Aluminum (Al), Composite, Hot-Pressing, Percolation

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