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Thermoelastic Martensitic Transformation and Shape Memory Effect in Sr_2 (Si, Ge)O_4
https://nitech.repo.nii.ac.jp/records/5023
https://nitech.repo.nii.ac.jp/records/502317f93a3f-7281-4d1a-988b-de11746872ed
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文_fulltext (3.5 MB)
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(c) 2001 The Ceramic Society of Japan
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2012-11-06 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Thermoelastic Martensitic Transformation and Shape Memory Effect in Sr_2 (Si, Ge)O_4 | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | journal article | |||||||||||||
| その他（別言語等）のタイトル | ||||||||||||||
| その他のタイトル | Sr_2(Si, Ge)O_4の熱弾性型マルテンサイト変態と形状記憶効果 | |||||||||||||
| 言語 | ja | |||||||||||||
| 著者 |
Fukuda, Koichiro
× Fukuda, Koichiro
× Fukuda, Tetsuya
× Suzuki, Akio
× Yamaguchi, Akira
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| 著者別名 | ||||||||||||||
| 姓名 | 福田, 功一郎 | |||||||||||||
| 書誌情報 |
en : Journal of the Ceramic Society of Japan 巻 109, 号 1276, p. 1017-1022, 発行日 2001-12-01 |
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| 出版者 | ||||||||||||||
| 出版者 | The Ceramic Society of Japan | |||||||||||||
| 言語 | en | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 0914-5400 | |||||||||||||
| item_10001_source_id_32 | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AN10040326 | |||||||||||||
| 出版タイプ | ||||||||||||||
| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
| 内容記述 | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | Crystals of Sr_2 (Si_<1-x>Ge_x) O_x with 0?×?1 were prepared and examined by powder XRD, optical microscopy, and AFM. The crystals with 0.3?x?0.6 were composed of both the α' (orthorhombic)- and twinned β (monoclinic)-phases. On the basis of the lattice correspondence between the two phases and their cell parameters, the phenomenological crystallographic theory has been applied to determine the habit planes and shape deformations upon α'-to-β martensitic transformation. The habit planes, which define the coherent interphase boundaries between α and β, were nearly parallel to either (100) or (001). Because the transformation was accompanied by a small volumetric shrinkage of ～0.3% , the parent α'-phase would elastically accommodate the strains upon the polysynthetic twin formation of the β-phase. At 293 K, the crystals with x=0.6 were composed of ～92.5 mass% α' and ～7.5 mass% β. During further cooling in liquid nitrogen, the α'-to-β transformation proceeded which increases the phase composition of β up to ～56.3%. The transformation is accompanied by the formation of plate-like surfaee reliefs. The surface relief angles have been determined from both observations (7.4 ± 0.2°) and calculations based on a phenomenological analysis (7.55°). The fair agreement of these values indicates that the transformation is martensitic and mainly governed by a shear mechanism. The shape memory effect has been demonstrated by the reproducibility of the surface reliefs. The coherency at the interface boundaries between the α'- and β-phases as well as the effective strain accommodation substantially account for the thermoelasticity of the solid solutions. | |||||||||||||
| 言語 | en | |||||||||||||
