This research project was supported by the Korea Institute of Materials Science, a subsidiary branch of the Korea Institute of Machinery and Materials.
Porous Sintered Reaction-Bonded Silicon Nitrides with Dual-Sized Pore Channel using Presintered Si-Additive Mixture Granules
Article first published online: 12 APR 2012
© 2011 American Ceramic Society
International Journal of Applied Ceramic Technology
Volume 9, Issue 6, pages 1104–1111, November/December 2012
How to Cite
Park, Y.-J., Lee, J.-W., Yun, H.-S. and Song, I.-H. (2012), Porous Sintered Reaction-Bonded Silicon Nitrides with Dual-Sized Pore Channel using Presintered Si-Additive Mixture Granules. International Journal of Applied Ceramic Technology, 9: 1104–1111. doi: 10.1111/j.1744-7402.2011.02715.x
- Issue published online: 8 OCT 2012
- Article first published online: 12 APR 2012
Porous sintered reaction-bonded silicon nitrides (SRBSNs) with wide pore channels were fabricated using Si-additive mixture granules. By increasing the strength through the presintering of the as-spray-dried granules, conventional uniaxial pressing was employed for the shaping while retaining the spherical granule morphology. The formation of wide intergranular (≥10 μm) and narrow intragranular (<1 μm) pore channels led to high porosity (≥50%) without the blending of fugitive. Both the widest pore channel (10.4 μm) and the highest permeability (κ = 0.3*10−12 m2) were measured using dm (mean diameter) = 76.5 μm granule.