Paper Title:
Superplastic Sinter-Forging of Fine-Grained Si3N4-Si2N2O Composite at Low Temperature
  Abstract

The Si3N4- Si2N2O composites are fabricated with amorphous nano-sized silicon nitride powders by the liquid phase sintering (LPS) method. XRD analysis shows sintered body consists of β-Si3N4 and Si2N2O. SEM experiment conforms that the average grain size of sintered body is less than 300nm. The complex-shape gears can be formed by a sinter-forging technology when the sintering temperature is 1600°C and the superplastic forging temperature is only 1550°C. Rod-shaped grains aligned along the perpendicular direction of pressure and the mechanical properties increase about 10% after the materials were forged.

  Info
Periodical
Materials Science Forum (Volumes 551-552)
Edited by
K.F. Zhang
Pages
487-490
DOI
10.4028/www.scientific.net/MSF.551-552.487
Citation
J. T. Luo, Q. Zhang, "Superplastic Sinter-Forging of Fine-Grained Si3N4-Si2N2O Composite at Low Temperature", Materials Science Forum, Vols. 551-552, pp. 487-490, 2007
Online since
July 2007
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Price
$32.00
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