TY - JOUR
T1 - Control of crystalline texture in polycrystalline alumina ceramics by electrophoretic deposition in a strong magnetic field
AU - Uchikoshi, T.
AU - Suzuki, T. S.
AU - Okuyama, H.
AU - Sakka, Y.
N1 - Funding Information:
The authors wish to thank Mr. Koji Kuramoto of the Keyence Co. for his help with the microscopic observations and Prof. Patrick S. Nicholson of McMaster University and Dr. Partho Sarkar of the Alberta Research Council for their valuable comments. This research was financially supported by the Hosokawa Powder Technology Foundation and the Budget for Nuclear Research of the Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2004/5
Y1 - 2004/5
N2 - Highly crystalline-textured pure dense alumina ceramics were fabricated from spherical alumina powder without any seed particles and sintering additives by electrophoretic deposition (EPD) in a strong magnetic field of 10 T. The crystalline texture was confirmed by x-ray diffraction (XRD) for alumina ceramics deposited at 10 T followed by sintering at 1873 K. The angle between the directions of the magnetic and electric fields (φB-E) was altered to control the dominant crystal faces of the α-alumina monoliths. The average orientation angles estimated from the XRD diagram of the samples prepared at φB-E = 0°, 45°, and 90° were 16.52°, 45.15°, and 84.90°, respectively. Alumina/alumina laminar composites with different crystalline-oriented layers were also fabricated by alternately changing the φB-E layer by layer during EPD in a 10 T magnetic field. It was demonstrated that by using this technique, it is possible to control the crystalline orientation by changing the angle of E versus B during the EPD.
AB - Highly crystalline-textured pure dense alumina ceramics were fabricated from spherical alumina powder without any seed particles and sintering additives by electrophoretic deposition (EPD) in a strong magnetic field of 10 T. The crystalline texture was confirmed by x-ray diffraction (XRD) for alumina ceramics deposited at 10 T followed by sintering at 1873 K. The angle between the directions of the magnetic and electric fields (φB-E) was altered to control the dominant crystal faces of the α-alumina monoliths. The average orientation angles estimated from the XRD diagram of the samples prepared at φB-E = 0°, 45°, and 90° were 16.52°, 45.15°, and 84.90°, respectively. Alumina/alumina laminar composites with different crystalline-oriented layers were also fabricated by alternately changing the φB-E layer by layer during EPD in a 10 T magnetic field. It was demonstrated that by using this technique, it is possible to control the crystalline orientation by changing the angle of E versus B during the EPD.
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U2 - 10.1557/JMR.2004.0198
DO - 10.1557/JMR.2004.0198
M3 - Article
AN - SCOPUS:3142722748
SN - 0884-2914
VL - 19
SP - 1487
EP - 1491
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 5
ER -