Sintering properties of beryllides for advanced neutron multipliers

Nakamichi, Masaru; Yonehara, Kazuo

doi:10.1016/j.jnucmat.2010.12.140

Cited by 46 publications

(18 citation statements)

References 4 publications

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“…In the previous study, it was confirmed that the intermetallic compound beryllide of Be-Ti could be directly synthesized by the plasma sintering method from mixed elemental powders of Be and Ti at a temperature which is lower than the melting point [3,4]. The present paper describes results of simultaneous synthesis and joining of beryllide using this plasma sintering method for development of beryllide rod fabrication technique.…”

Section: Evaluation Of Applicable Methods For Beryllide Synthesismentioning

confidence: 55%

“…In the previous study, preliminary fabrication of beryllide, namely Be-Ti intermetallic, was carried out at sintering temperatures of 1073, 1173 and 1273 K, using mixed Be and Ti powders by the plasma sintering method [3,4]. The melting points of Be 12 Ti (92.3 at.% Be and 7.7 at.% Ti), Be 17 Ti 2 (89.5 at.% Be and 10.5 at.% Ti) and Be 2 Ti (66.7 at.% Be and 33.3 at.% Ti) intermetallic compounds are 1873, 1905 and 1623 K, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Beryllium intermetallic compounds (beryllides) such as Be 12 Ti are one of the most promising advanced neutron multipliers [3,4]. However, beryllide is too brittle for the fabrication of pebbles by conventional methods.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a synthesis method of beryllides as advanced neutron multiplier for DEMO reactors

Nakamichi¹,

Kim²,

Wakai³

et al. 2012

Fusion Engineering and Design

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Section: Evaluation Of Applicable Methods For Beryllide Synthesismentioning

confidence: 55%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Development of a synthesis method of beryllides as advanced neutron multiplier for DEMO reactors

Nakamichi¹,

Kim²,

Wakai³

et al. 2012

Fusion Engineering and Design

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“…However, Be pebbles may not be suitable for the DEMO blanket due to swelling and stability issues with water steam [12]. Thus, beryllium intermetallic compounds (beryllides) have become promising materials for advanced neutron multipliers [13,14]. Establishing the fabrication technique for beryllides is a key issue in developing advanced neutron multipliers.…”

Section: Introductionmentioning

confidence: 99%

Development of fabrication technologies for advanced breeding functional materials For DEMO reactors

Hoshino

Nakamichi

2012

Fusion Engineering and Design

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“…Therefore, this method needs long fabrication periods and high costs. Japan Atomic Energy Agency (JAEA) has developed a new fabrication method, so-called ''plasma-sintering method'' [4], which is almost identical to Spark Plasma Sintering (SPS) Method [4]. This method is a like of combination of hot press and plasma generator, which is more suitable than the HIP method in terms of not only fabrication period and cost but also higher homogenization and denticification of the products.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of titanium beryllide fabricated by plasma-sintering method

Wada¹,

Munakata²,

Satō³

et al. 2012

Journal of Nuclear Science and Technology

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It is imperative to establish the blanket technologies for realization of D-T fusion reactors. The neutron multiplier in the fusion reactor blankets plays one of the key roles with regard to breeding of tritium. Metallic beryllium has been considered as a primary candidate for the neutron multiplier, but it is highly reactive with water vapor and oxygen at high temperatures producing H 2 and BeO. Thus, it is necessary to develop more advanced neutron multipliers that are more chemically stable than metallic beryllium. One of the intermetallic compounds of beryllium and titanium, Be 12 Ti, possesses high tolerance to water vapor and oxygen, low swelling property, and better compatibility with structural materials. Thus, it could be an alternative of metallic beryllium. However, few experimental data are available for this material, and thus more experimental studies need to be performed to evaluate its performance as a neutron multiplier. In this study, a Be 12 Ti sample was fabricated by a new production route, plasmasintering method, and of which reactivity with O 2 and H 2 O was examined. Experimental results suggest that the Be 12 Ti sample prepared by the new production route possesses high resistance to oxidation by O 2 and H 2 O.

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Sintering properties of beryllides for advanced neutron multipliers

Cited by 46 publications

References 4 publications

Development of a synthesis method of beryllides as advanced neutron multiplier for DEMO reactors

Development of a synthesis method of beryllides as advanced neutron multiplier for DEMO reactors

Development of fabrication technologies for advanced breeding functional materials For DEMO reactors

Oxidation of titanium beryllide fabricated by plasma-sintering method

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