Residual stress of ruthenium powder samples compacted by spark-plasma-sintering (SPS) determined by X-ray diffraction
Spark-plasma-sintering (SPS) experiments of cylindrical ruthenium powder samples have been performed at different sintering temperatures between 1200 °C and 1600 °C applying a comparatively short sintering time of 1 min. The compacted samples have been characterized in respect of crystallite size, p...
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Veröffentlicht in: | International journal of refractory metals & hard materials 2009, Vol.27 (1), p.105-110 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Spark-plasma-sintering (SPS) experiments of cylindrical ruthenium powder samples have been performed at different sintering temperatures between 1200
°C and 1600
°C applying a comparatively short sintering time of 1
min. The compacted samples have been characterized in respect of crystallite size, phase composition, and microstructure by X-ray diffraction and scanning electron microscopy techniques. Furthermore, the stress components
σ
11 and
σ
33 directed parallel and vertical to the compaction axis have been determined by means of the sin
2
ψ method. The SPS process resulted in a significant reduction of the residual stress in the material in comparison with samples compacted by conventional hot pressing methods (HP) which were compacted at 1200
°C and 1400
°C for 60
min. This effect is also associated with an enhanced crystallite growth. |
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ISSN: | 0263-4368 2213-3917 |
DOI: | 10.1016/j.ijrmhm.2008.04.002 |