| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2023-03-30 |
| タイトル |
|
|
タイトル |
Influence of Microstructure on Fatigue Fracture Characteristics of Al2O3 |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Al2O3 ceramics |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Grain morphology |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Grain boundary phase |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Grain bridging effect |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Stress corrosion cracking |
| 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 |
departmental bulletin paper |
| 著者 |
Kido, Mitsuo
Katayama, Gounozyo
Inoda, Nana
Tsuchibushi, Yasuyuki
木戸, 光夫
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Fatigue fracture characteristics under static and cyclic loading were investigated for three kinds of Al2O3, with microstructures controlled by sintering additives (MgO, SiO2+CaO) and particle size. The microstructures were: fine equi-axed grains (Material M, MgO added), coarse columnar grains (Material SC, SiO2+CaO added) and fine columnar grains (Material SC-f, SiO2+CaO added). The crack propagation rates da/dN of Material SC was accelerated in water. The measurements of R-curve behavior and COD under cyclic loading showed that the grain bridging effect of Material SC was reduced further than that of Material SC-f. In addition, surface analysis by EDX on fatigue fracture surfaces in Material SC showed that Si and Ca, the components of the sintering additives, were decreased markedly at SCG sites under cyclic loading in water. Consequently, it is concluded that the degradation of fatigue strength in Material SC under cyclic loading in water was caused by the activation of a hydration reaction at grain boundaries in the crack tip and a marked decrease in the grain bridging effect (i.e., an increase in Ktip). |
| 書誌情報 |
広島工業大学研究紀要
巻 33,
p. 67-74,
発行日 1999-02-01
|
| 出版者 |
|
|
出版者 |
広島工業大学 |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
03851672 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN0021271X |
| 関連サイト |
|
|
|
識別子タイプ |
URI |
|
|
関連識別子 |
http://ci.nii.ac.jp/naid/40003284400/ |
|
|
関連名称 |
http://ci.nii.ac.jp/naid/40003284400/ |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 日本十進分類法 |
|
|
主題Scheme |
NDC |
|
主題 |
531.2 |
kenkyukiyo33067.pdf (297.0 kB)
