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  1. 060 工学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Nb_2O_5 と Al_2O_3-Y_2O_3 系化合物の固相反応

http://hdl.handle.net/10191/7486
http://hdl.handle.net/10191/7486
6ad4addb-d24f-4891-9b3b-959e23e0c3e5
名前 / ファイル ライセンス アクション
110002312377.pdf 110002312377.pdf (876.2 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2009-04-08
タイトル
タイトル Nb_2O_5 と Al_2O_3-Y_2O_3 系化合物の固相反応
タイトル
言語 en
タイトル Nb_2O_5 と Al_2O_3-Y_2O_3 系化合物の固相反応
言語
言語 jpn
キーワード
主題Scheme Other
主題 Solid state reaction
キーワード
主題Scheme Other
主題 Nb_2O_5
キーワード
主題Scheme Other
主題 Al_2O_3-Y_2O_3 compounds
キーワード
主題Scheme Other
主題 Reaction couple
キーワード
主題Scheme Other
主題 Reaction rate
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
その他のタイトル
その他のタイトル Solid State Reaction between Nb_2O_5 and the Compounds in the System Al_2O_3-Y_2O_3
著者 堀田, 憲康

× 堀田, 憲康

WEKO 47987

堀田, 憲康

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斉藤, 夏風

× 斉藤, 夏風

WEKO 47988

斉藤, 夏風

Search repository
松尾, 重友

× 松尾, 重友

WEKO 47989

松尾, 重友

Search repository
松下, 徹

× 松下, 徹

WEKO 47990

松下, 徹

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著者別名
識別子 47991
識別子Scheme WEKO
姓名 Hotta, Noriyasu
著者別名
識別子 47992
識別子Scheme WEKO
姓名 Saito, Natsukaze
著者別名
識別子 47993
識別子Scheme WEKO
姓名 Matsuo, Shigetomo
著者別名
識別子 47994
識別子Scheme WEKO
姓名 Matsushita, Toru
抄録
内容記述タイプ Abstract
内容記述 Nb_2O_5焼結体と3種類のAl_2O_3-Y_2O_3 系化合物(5Al_2O_3・3Y_2O_3, Al_2O_3・Y_2O_3, Al_2O_3・2Y_2O_3)焼結体を重ね合わせて拡散対とし, 大気中, 1250℃〜1325℃で加熱した.生成する反応層をX線マイクロアナライザー分析及びX線回折により測定し, Nb_2O_5とAl_2O_3-Y_2O_3系化合物との固相反応を調べた. Nb_2O_5のAl_2O_3-Y_2O_3 系化合物への一方拡散により, Al_2O_3・Nb_2O_5及びY_2O_3・Nb_2O_5が生成した.反応層内に生成したAl_2O_3・Nb_2O_5は長球形, Y_2O_3・Nb_2O_5は球形の形状をしており, 各々の粒子は集合体として偏在していた,反応後, 冷却に際してNb_2O_5層と反応層の熱膨脹率の差により, それらの界面ではく離が起こった.反応層の厚化遠度はx^2=2D_<nb>t式に従い, 見掛けの活性化エネルギーは90〜95kcal/molであった.
抄録
内容記述タイプ Abstract
内容記述 Solid state reactions between sintered Nb_2O_5 and three kinds of Al_2O_3-Y_2O_3 compounds (5 Al_2O_3・3Y_2O_3, Al_2O_3・Y_2O_3, Al_2O_3・2Y_2O_3) have been studied at the temperature range from 1250℃ to 1325℃ in air. The reaction product formed at the interface were examined by using EPMA and X-ray diffraction. The following results were obtained : Al_2O_3・Nb_2O_5 and Y_2O_3・Nb_2O_5 were formed by the one-way diffusion of Nb_2O_5 into the compounds in the system Al_2O_3-Y_2O_3. The ellipsoidal particles of Al_2O_3・Nb_2O_5 and the spherical particles of Y_2O_3・Nb_2O_5 were unevenly distributed with the aggregation state in the reaction layers. The observed separation of reaction couples was probably due to the difference of thermal expansion coefficients between the reaction products and Nb_2O_5. The reaction rate "x" followed the parabolic law "x^2=D_<Nb>t", and the apparent activation energy was 90〜95 kcal/mol.
書誌情報 窯業協會誌
en : 窯業協會誌

巻 90, 号 11, p. 653-658, 発行日 1982-11
出版者
出版者 窯業協会
ISSN
収録物識別子タイプ ISSN
収録物識別子 00090255
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00245650
権利
権利情報 日本セラミックス協会
権利
権利情報 本文データは学協会の許諾に基づきCiNiiから複製したものである
著者版フラグ
値 publisher
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/110002312377
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