DOI: 10.1126/science.1119839. Grain Boundary Strengthening in Alumina by Rare Earth Impurities

Grain Boundary Strengthening in Alumina by Rare Earth Impurities

10.1126/science.1119839

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Impurity doping often alters or improves the properties of materials. In alumina, grain boundaries play a key role in deformation mechanisms, particularly in the phenomenon of grain boundary sliding during creep at high temperatures. We elucidated the atomic-scale structure in alumina grain boundaries and its relationship to the suppression of creep upon doping with yttrium by using atomic resolution microscopy and high-precision calculations. We find that the yttrium segregates to very localized regions along the grain boundary and alters the local bonding environment, thereby strengthening the boundary against mechanical creep.

Bibliography

Buban, J. P., Matsunaga, K., Chen, J., Shibata, N., Ching, W. Y., Yamamoto, T., & Ikuhara, Y. (2006). Grain Boundary Strengthening in Alumina by Rare Earth Impurities. Science, 311(5758), 212â215.

Authors 7

J. P. Buban (first)
K. Matsunaga (additional)
J. Chen (additional)
N. Shibata (additional)
W. Y. Ching (additional)
T. Yamamoto (additional)
Y. Ikuhara (additional)

References 27 Referenced 419

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A. H. Heuer, N. J. Tighe, R. M. Cannon, J. Am. Ceram. Soc.63, 53 (1980). (10.1111/j.1151-2916.1980.tb10649.x) / J. Am. Ceram. Soc. (1980)
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According to coincidence site lattice theory a Σ31 [0001] tilt grain boundary is representative of a high angle random GB.
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This work was supported in part by the Japanese Society for the Promotion of Science (JSPS). W.Y.C. is supported by U.S. Department of Energy (DOE) under grant no. DE-FG02-84DR45170. This research used the supercomputing resources supported by Office of Science and DOE.

Dates

Type	When
Created	19 years, 7 months ago (Jan. 12, 2006, 5:53 p.m.)
Deposited	1 year, 7 months ago (Jan. 9, 2024, 9:32 p.m.)
Indexed	2 weeks, 5 days ago (Aug. 7, 2025, 5:32 p.m.)
Issued	19 years, 7 months ago (Jan. 13, 2006)
Published	19 years, 7 months ago (Jan. 13, 2006)
Published Print	19 years, 7 months ago (Jan. 13, 2006)

Funders 0

None

BibTeX

@article{Buban_2006, title={Grain Boundary Strengthening in Alumina by Rare Earth Impurities}, volume={311}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1119839}, DOI={10.1126/science.1119839}, number={5758}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Buban, J. P. and Matsunaga, K. and Chen, J. and Shibata, N. and Ching, W. Y. and Yamamoto, T. and Ikuhara, Y.}, year={2006}, month=jan, pages={212–215} }

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  "references-count": 27,
  "journal-issue": {
    "issue": "5758",
    "published-print": {
      "date-parts": [
        [
          2006,
          1,
          13
        ]
      ]
    }
  },
  "alternative-id": [
    "10.1126/science.1119839"
  ],
  "URL": "http://dx.doi.org/10.1126/science.1119839",
  "relation": {},
  "ISSN": [
    "0036-8075",
    "1095-9203"
  ],
  "subject": [],
  "container-title-short": "Science",
  "published": {
    "date-parts": [
      [
        2006,
        1,
        13
      ]
    ]
  }
}