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- W1525258877 abstract "Niihara and Nakahira [1] first investigated the use of fine (<0.3 m) particulate SiC reinforcement in polycrystalline alumina (Al2O3/SiC “nanocomposites”). They found that for nanocomposite bend strength was 1050 MPa (350 MPa for Al2O3) and toughness was 4.8 MPa.m 1⁄2 (3.5 MPa.m 1⁄2 for Al2O3) [1]. Attempts to replicate this work have resulted in less dramatic bend strength increases, typically in the range 500 to 800 MPa [2, 3, 4]. The current consensus is that little or no toughening occurs in nanocomposites [5]. Despite controversy over the existence and magnitude of strength and toughness increases, all researchers report a clear change in fracture mode. The addition of silicon carbide causes the nanocomposites to fracture transgranularly, rather than intergranularly, which is typical of alumina [1, 6]. Another agreed effect of the nanocomposite additions is the change in wear behaviour. After polishing, the nanocomposites showed better surface quality than alumina polished under the same conditions [2, 4]." @default.
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- W1525258877 date "2004-09-23" @default.
- W1525258877 modified "2023-09-26" @default.
- W1525258877 title "Grain Boundary Microanalysis in Al <sub>2</sub> O <sub>3</sub> ‐SiC Nanocomposites" @default.
- W1525258877 cites W2898712814 @default.
- W1525258877 doi "https://doi.org/10.1002/3527606017.ch15" @default.
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