| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2008-05-02 |
| タイトル |
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|
タイトル |
Compositional Effect on the Two-Stage Enthalpy Relaxation of Metal-Metalloid Amorphous Alloys upon Annealing |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| ID登録 |
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|
ID登録 |
10.50974/00043335 |
|
ID登録タイプ |
JaLC |
| 著者 |
Inoue, Akihisa
Chen, H. S.
Masumoto, Tsuyoshi
Ajuria, S. A.
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The anneal-induced enthalpy relaxation behavior was examined calorimetrically for amorphous alloys of Fe-P, Fe-B, Ni-P, Ni-B. Fe-Ni-P, Fe-Ni-B and Fe-Ni-Co-P systems. When the alloys annealed at temperatures below T_g are heated, an excess endothermic reaction (enthalpy relaxation) occurs above the annealing temperature. T_a. The magnitudes of Δ_<C_p, endo> and ΔH_<endo> for the alloys of Fe-P. Fe-B, Ni-P and Ni-B containing only one metallic element first increase gradually with rising T_a and then rapidly at temperatures just below T_g, while their changes as a function of T_a for the alloys containing more than two metallic elements show a distinct two-stage splitting ; a low-temperature peak at about T_g-200 K and a high-temperature peak just below T_g, From the result that the addition of the second metallic element causes the two-stage splitting of the ΔC_<p, endo> (T_a), it has been proposed that the low-temperature endothermic peak is attributed to short-range rearrangement of metal-metal atoms with weak bonding nature and the high-temperature peak to the long-range cooperative regrouping of metal-metalloid atoms which are composed of the skeleton structure in the metal-metalloid amorphous alloys. The mechanism for the appearance of the two-stage enthalpy relaxation has been investigated by the concept of two-stage distributions of relaxation times proposed previously by the present authors and the distinct two-stage splitting has been interpreted to be generated by the distinguishable difference in the ease of atomic rearrangement between metal-metal and metal-metalloid. |
| 書誌情報 |
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy
巻 32,
号 2,
p. 116-140,
発行日 1985-03-26
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00408808 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00836167 |
| フォーマット |
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内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
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出版者 |
Tohoku University |
| 資源タイプ |
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内容記述タイプ |
Other |
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内容記述 |
紀要類(bulletin) |
| 登録日 |
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|
日付 |
2008-05-02 |
|
日付タイプ |
Created |
| 公開日（投稿完了日） |
|
|
日付 |
2008-05-02 |
|
日付タイプ |
Created |
| 発行日 |
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|
日付 |
1985-03-26 |
|
日付タイプ |
Created |
| フォーマット |
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|
内容記述タイプ |
Other |
|
内容記述 |
1248224 bytes |
| 更新日 |
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|
日付 |
2010-01-27 |
|
日付タイプ |
Created |
KJ00004199492.pdf (1.2 MB)
