| Autor: | S.J. Harris, A.J. Trowsdale, B. Noble |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Materials science
Scanning electron microscope Mechanical Engineering Solid-state reaction route chemistry.chemical_element Atmospheric temperature range chemistry.chemical_compound chemistry Mechanics of Materials Aluminium visual_art Differential thermal analysis Silicon carbide Aluminium alloy visual_art.visual_art_medium General Materials Science Composite material Solid solution |
| Zdroj: | Journal of Materials Science. 32:5969-5978 |
| ISSN: | 0022-2461 |
| DOI: | 10.1023/a:1018663011073 |
| Popis: | An experimental investigation has been carried out on the reaction that takes place between 3 and 20 μm SiC particles and the aluminium alloy 1050 matrix of composite materials prepared by a mechanical alloying process. The work is different from that undertaken by other researchers in that the SiC-Al interface reaction has been studied in the temperature range 853–933 K, i.e., with the matrix initially in the solid state. Differential thermal analysis, X-ray diffraction and scanning electron microscopy all show that the SiC-Al reaction initiates in the solid state at temperatures as low as 883 K. The reaction produces Al4C3 and Si, the latter entering into solid solution in the aluminium matrix. At temperatures exceeding 903 K, the reaction produces a liquid phase and at this stage the speed of the interface reaction increases significantly. The results are discussed in terms of Al-Si-C metastable equilibrium and the kinetics of the reaction. |
| Databáze: | OpenAIRE |
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