Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering

K. A. Pavlov; E. V. Velichko; V. N. Zabenkin; W. H. Kraan; C. P. Duif; W. G. Bouwman; Z. A. Mikhailovskaya; E. S. Buyanova; S. V. Grigoriev

doi:10.1134/S1027451017010189

Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering

K. A. Pavlov^*, E. V. Velichko, V. N. Zabenkin, W. H. Kraan, C. P. Duif, W. G. Bouwman, Z. A. Mikhailovskaya, E. S. Buyanova, S. V. Grigoriev

^*Corresponding author for this work

RST/Neutron and Positron Methods in Materials

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

The closed porous structure in ceramic materials is investigated by spin-echo small-angle neutron scattering. A series of ceramic samples of oxygen–ion conductors based on bismuth molybdate with the general formula Bi_12.8X_0.2Mo₅O_{34 ± δ} (X = Mg, Ba, Ca, Sr) is obtained by powder sintering for 6−45 h at a temperature close to the melting point. The samples are characterized by scanning electron microscopy and X-ray fluorescence analysis. It is found that they had a stoichiometric chemical composition, are singlephase, and contain clean pores between crystal grains. The pore size is determined by spin-echo small-angle neutron scattering and ranges from 2.2 to 3.5 μm. It is demonstrated that longer sintering times correspond to larger pores (the increase in their average diameter is as large as 30%). It is found that the studied materials lack a fractal pore structure.

Original language	English
Pages (from-to)	92-98
Number of pages	7
Journal	Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques
Volume	11
Issue number	1
DOIs	https://doi.org/10.1134/S1027451017010189
Publication status	Published - 1 Jan 2017

Keywords

bismuth molybdate
oxygen conductors
scanning electron microscopy
spin-echo small-angle neutron scattering
X-ray fluorescence analysis

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10.1134/S1027451017010189

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Pavlov, K. A., Velichko, E. V., Zabenkin, V. N., Kraan, W. H., Duif, C. P., Bouwman, W. G., Mikhailovskaya, Z. A., Buyanova, E. S., & Grigoriev, S. V. (2017). Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques, 11(1), 92-98. https://doi.org/10.1134/S1027451017010189

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title = "Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering",

abstract = "The closed porous structure in ceramic materials is investigated by spin-echo small-angle neutron scattering. A series of ceramic samples of oxygen–ion conductors based on bismuth molybdate with the general formula Bi12.8X0.2Mo5O34 ± δ (X = Mg, Ba, Ca, Sr) is obtained by powder sintering for 6−45 h at a temperature close to the melting point. The samples are characterized by scanning electron microscopy and X-ray fluorescence analysis. It is found that they had a stoichiometric chemical composition, are singlephase, and contain clean pores between crystal grains. The pore size is determined by spin-echo small-angle neutron scattering and ranges from 2.2 to 3.5 μm. It is demonstrated that longer sintering times correspond to larger pores (the increase in their average diameter is as large as 30%). It is found that the studied materials lack a fractal pore structure.",

keywords = "bismuth molybdate, oxygen conductors, scanning electron microscopy, spin-echo small-angle neutron scattering, X-ray fluorescence analysis",

author = "Pavlov, {K. A.} and Velichko, {E. V.} and Zabenkin, {V. N.} and Kraan, {W. H.} and Duif, {C. P.} and Bouwman, {W. G.} and Mikhailovskaya, {Z. A.} and Buyanova, {E. S.} and Grigoriev, {S. V.}",

year = "2017",

month = jan,

day = "1",

doi = "10.1134/S1027451017010189",

language = "English",

volume = "11",

pages = "92--98",

journal = "Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques",

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Pavlov, KA, Velichko, EV, Zabenkin, VN, Kraan, WH, Duif, CP , Bouwman, WG, Mikhailovskaya, ZA, Buyanova, ES & Grigoriev, SV 2017, 'Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering', Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques, vol. 11, no. 1, pp. 92-98. https://doi.org/10.1134/S1027451017010189

Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering. / Pavlov, K. A.; Velichko, E. V.; Zabenkin, V. N. et al.
In: Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques, Vol. 11, No. 1, 01.01.2017, p. 92-98.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering

AU - Pavlov, K. A.

AU - Velichko, E. V.

AU - Zabenkin, V. N.

AU - Kraan, W. H.

AU - Duif, C. P.

AU - Bouwman, W. G.

AU - Mikhailovskaya, Z. A.

AU - Buyanova, E. S.

AU - Grigoriev, S. V.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - The closed porous structure in ceramic materials is investigated by spin-echo small-angle neutron scattering. A series of ceramic samples of oxygen–ion conductors based on bismuth molybdate with the general formula Bi12.8X0.2Mo5O34 ± δ (X = Mg, Ba, Ca, Sr) is obtained by powder sintering for 6−45 h at a temperature close to the melting point. The samples are characterized by scanning electron microscopy and X-ray fluorescence analysis. It is found that they had a stoichiometric chemical composition, are singlephase, and contain clean pores between crystal grains. The pore size is determined by spin-echo small-angle neutron scattering and ranges from 2.2 to 3.5 μm. It is demonstrated that longer sintering times correspond to larger pores (the increase in their average diameter is as large as 30%). It is found that the studied materials lack a fractal pore structure.

AB - The closed porous structure in ceramic materials is investigated by spin-echo small-angle neutron scattering. A series of ceramic samples of oxygen–ion conductors based on bismuth molybdate with the general formula Bi12.8X0.2Mo5O34 ± δ (X = Mg, Ba, Ca, Sr) is obtained by powder sintering for 6−45 h at a temperature close to the melting point. The samples are characterized by scanning electron microscopy and X-ray fluorescence analysis. It is found that they had a stoichiometric chemical composition, are singlephase, and contain clean pores between crystal grains. The pore size is determined by spin-echo small-angle neutron scattering and ranges from 2.2 to 3.5 μm. It is demonstrated that longer sintering times correspond to larger pores (the increase in their average diameter is as large as 30%). It is found that the studied materials lack a fractal pore structure.

KW - bismuth molybdate

KW - oxygen conductors

KW - scanning electron microscopy

KW - spin-echo small-angle neutron scattering

KW - X-ray fluorescence analysis

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AN - SCOPUS:85015398737

SN - 1027-4510

VL - 11

SP - 92

EP - 98

JO - Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques

JF - Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques

IS - 1

ER -

Investigation of the closed porosity of functional ceramic materials by spin-echo small-angle neutron scattering

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