Surface Modification of SiC Powder for Use in Electrophoretic Deposition

Abstract:

The surface modification of SiC powder with an alumina precursor was achieved by a sol-gel method to apply the electrophoretic deposition (EPD) technique to the shaping of the SiC powder. The isoelectric point of the surface-modified SiC powder with sol-gel-derived alumina precursor was shifted to around pH 9, which is close to that of alumina. The alumina-coated SiC deposited on a cathodic substrate by EPD. The green compact of surface-modified SiC powder was sintered by hot pressing in an argon atmosphere at 2000oC.

• Periodical: Key Engineering Materials (Volume 412)
• Pages: 287-290
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.412.287
• Online since: June 2009
• Authors: Saki Sakakibara, Tohru Suzuki, Atsunori Matsuda, Tetsuo Uchikoshi
• Keywords: Al₂O₃, Electrophoretic Deposition (EPD), Silicon Carbide (SiC), Sol-Gel Method

References

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[2] 8.

[2] 9 3.

[3] 1.

[3] 2 The number of coating times Density / gcm-3 0 100 200 300 0.

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1 time / sec Weight / g 0 100 200 300 0.

02.

04.

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1 time / sec Weight / g (b) ◆: Al2O3 ●: 1-time ▲: 2 times □: 3 times ▽: 4 times (a).