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Journal Articles

Thermal and mechanical properties of CeO$$_{2}$$

Suzuki, Kiichi; Kato, Masato; Sunaoshi, Takeo*; Uno, Hiroki*; Carvajal-Nunez, U.*; Nelson, A. T.*; McClellan, K. J.*

Journal of the American Ceramic Society, 102(4), p.1994 - 2008, 2019/04

https://doi.org//10.1111/jace.16055

The fundamental properties of CeO$$_{2}$$ were assessed using a range of experimental techniques. The oxygen potential of CeO$$_{2}$$ was measured by the thermogravimetric technique, and a numerical fit for the oxygen potential of CeO$$_{2}$$ is derived based on defect chemistry. Mechanical properties of CeO$$_{2}$$ were obtained using sound velocity measurement, resonant ultrasound spectroscopy and nanoindentation. The obtained mechanical properties of CeO$$_{2}$$ are then used to evaluate the Debye temperature and Gruneisen constant. The heat capacity and thermal conductivity of CeO$$_{2}$$ were also calculated using the Debye temperature and the Gruneisen constant. Finally, the thermal conductivity was calculated based upon laser flash analysis measurements. This result demonstrates that the thermal conductivity has strong dependence upon material purity.

Journal Articles

Structural changes of ZrO$$_{2}$$-CeO$$_{2}$$ solid solutions around the monoclinic-tetragonal phase boundary

Yashima, Masatomo*; Hirose, Teruo*; Katano, Susumu; Suzuki, Yasuo*; Kakihana, Masato*; Yoshimura, Masahiro*

Physical Review B, 51(13), p.8018 - 8025, 1995/04

https://doi.org/10.1103/PhysRevB.51.8018
 Times Cited Count：104 Percentile：3.11(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Phase relations in the systems ZrO$$_{2}$$-Y$$_{2}$$O$$_{3}$$-Nd$$_{2}$$O$$_{3}$$ and ZrO$$_{2}$$-Y$$_{2}$$O$$_{3}$$-CeO$$_{2}$$

;

Mater.Res.Bull., 21, p.1343 - 1349, 1986/00

https://doi.org/10.1016/0025-5408(86)90069-3
 Times Cited Count：28 Percentile：21.14(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

A Study of the reactions between ZrC and some metal oxides

; Ikawa, Katsuichi; Iwamoto, K.

Journal of Nuclear Materials, 87(1), p.40 - 48, 1979/00

https://doi.org/10.1016/0022-3115(79)90124-7
 Times Cited Count：3

no abstracts in English

Oral presentation

Study on development of additive-free dry granulation technology and evaluation of granulation characteristics

Ishii, Katsunori; Segawa, Tomomi; Kawaguchi, Koichi; Nishina, Masahiro; Makino, Takayoshi; Natori, Yuri*

no journal, , 

JAEA is developing simplified a plutonium and uranium mixed oxide (MOX) pellet fabrication process. In this process, agitation granulator improves flowability of MOX powder with water as binder. This granulation method has issues, including low production capacity due to criticality control for wet nuclear material. A new simple additive-free dry granulation method was proposed recently to produce tritium breeding Li$$_{2}$$O spheres for nuclear fusion reactor. In this research, results of experiments to investigate the applicability of the new granulation method to MOX powder is reported.

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