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They were sintered at 1573 to 1623 K (1300~1350°C) for 6.0×10^2 s (10 min) under 50 MPa in Ar. Thus-obtained ceramics consisted of 130~150 nm grains, composed of α-Al_2O_3 and tetragonal-ZrO_2 with a small amount of monoclinic-ZrO_2. Dense ceramics with high relative densities ≥99.5% revealed high mechanical properties: bending strength (σ_b) higher than 1.3 GPa and simultaneous fracture toughness (K_IC) higher than 15.5 MPa·m^1/2, which value was evaluated by the indentation fracture toughness (IF) test. X-ray diffraction (XRD) analysis, SEM and TEM with EDS observations on the as-prepared and calcined powders, and the microstructures of ceramics demonstrated the homogeneous grain distribution of t-ZrO_2 and α-Al_2O_3, with the former grains being surrounded by the latter which had segregated from the calcined cubic ZrO_2 solid solution containing both Al_2O_3 and Y_2O_3.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_1_description_13": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "論文名・英文タイトル・keywords・抄録中の^1/2 ^2は上付き文字、_2 _3 _b _IC は下付き文字、[i.e.]は斜体文字", "subitem_description_language": "ja", "subitem_description_type": "Other"}]}, "item_1_description_25": {"attribute_name": "フォーマット", "attribute_value_mlt": [{"subitem_description": "application/pdf", "subitem_description_type": "Other"}]}, "item_1_identifier_registration": {"attribute_name": "ID登録", "attribute_value_mlt": [{"subitem_identifier_reg_text": 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Fabrication of dense ZrO_2-Al_2O_3 composite ceramics by pulsed electric-current pressure sintering of neutralization co-precipitated powders
https://doi.org/10.14988/pa.2017.0000015581
https://doi.org/10.14988/pa.2017.0000015581d2b1e77d-bdc4-4a8f-b34b-035ef075db17
名前 / ファイル | ライセンス | アクション |
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023058020001.pdf (1.8 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||
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公開日 | 2017-08-28 | |||||||||||||||||
タイトル | ||||||||||||||||||
言語 | en | |||||||||||||||||
タイトル | Fabrication of dense ZrO_2-Al_2O_3 composite ceramics by pulsed electric-current pressure sintering of neutralization co-precipitated powders | |||||||||||||||||
言語 | ||||||||||||||||||
言語 | eng | |||||||||||||||||
キーワード | ||||||||||||||||||
主題 | 中和共沈粉体, ジルコニア-アルミナ, コンポジット, パルス通電加圧焼結 neutralization co-precipitated powders, ZrO_2-Al_2O_3, zirconia alumina, composite, pulsed electric-current pressure sintering, mechanical properties, co-precipitation |
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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 | |||||||||||||||||
ID登録 | ||||||||||||||||||
ID登録 | 10.14988/pa.2017.0000015581 | |||||||||||||||||
ID登録タイプ | JaLC | |||||||||||||||||
アクセス権 | ||||||||||||||||||
アクセス権 | open access | |||||||||||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||
その他(別言語等)のタイトル | ||||||||||||||||||
その他のタイトル | 中和共沈法で調製した粉体のパルス通電加圧焼結による高密度ZrO_2-Al_2O_3系コンポジットセラミックスの作製 | |||||||||||||||||
言語 | ja | |||||||||||||||||
その他(別言語等)のタイトル | ||||||||||||||||||
その他のタイトル | チュウワ キョウチンホウ デ チョウセイ シタ フンタイ ノ パルス ツウデン カアツ ショウケツ ニヨル コウミツド ZrO_2-Al_2O_3ケイ コンポジット セラミックス ノ サクセイ | |||||||||||||||||
言語 | ja-Kana | |||||||||||||||||
その他(別言語等)のタイトル | ||||||||||||||||||
その他のタイトル | チュウワ キョウチンホウ デ チョウセイ シタ フンタイ ノ パルス ツウデン カアツ ショウケツ ニヨル コウミツド ジルコニア-アルミナケイ コンポジット セラミックス ノ サクセイ | |||||||||||||||||
言語 | ja-Kana | |||||||||||||||||
著者 |
廣田, 健
× 廣田, 健
WEKO
15901
× 山本, 健太× 笹井, 厚希× 加藤, 将樹
WEKO
15903
× 田口, 秀樹× 木村, 英夫× 高井, 優行× 寺田, 昌生 |
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著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Hirota, Ken / Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University (同志社大学理工学部機能分子・生命化学科教授) | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Yamamoto, Kenta / Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Sasai, Koki / Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Kato, Masaki / Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University (同志社大学理工学部機能分子・生命化学科教授) | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Taguchi, Hideki / The Graduate School of Natural Science and Technology (Science), Okayama University | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Kimura, Hideo / Daiichi Kigenso Kagaku Kogyo Co., Ltd. | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Takai, Masayuki / Daiichi Kigenso Kagaku Kogyo Co., Ltd. | ||||||||||||||||||
著者所属(英) | ||||||||||||||||||
en | ||||||||||||||||||
Terada, Masao / Daiichi Kigenso Kagaku Kogyo Co., Ltd. | ||||||||||||||||||
抄録 | ||||||||||||||||||
内容記述タイプ | Abstract | |||||||||||||||||
内容記述 | 25mol% Al_2O_3と1.125mol%Y_2O_3 を含む,即ち,75mol% ZrO_2(1.5mol% Y_2O_3)- 25mol% Al_2O_3組成のZrO_2基コンポジットセラミックスを,中和共沈法で調製した固溶体粉体をパルス通電加圧焼結して作製した.この試料はAr雰囲気中1573~1623 K(1300~1350°C)で,6.0×10^2 s(10分)50 MPaの条件で焼結された.これらのセラミックスは少量の単斜晶ZrO_2を含む正方晶ZrO_2とa- Al_2O_3から構成されており,その結晶粒子径は130~150 nmであった.この相対密度99.5%以上の高密度セラミックスは高い機械的特性を示した.即ち1.3 GPa以上の曲げ強度σ_bと同時に15.5 MPa·m^1/2以上の破壊靭性値K_ICを示す.なお,後者の値は硬度測定用の圧子を試料に押し付け圧痕の周辺に発生するクラックの長さから評価するIF法で評価した値である.調製直後の粉体及び仮焼粉,及びセラミックスのX線回折,SEMとEDSを装着したTEMによる解析から,ZrO_2及びα- Al_2O_3,前者の粒子が仮焼粉体の立方晶ZrO_2固溶粉体から析出した後者の粒子で囲まれている,均質な粒子分布であることが分かった. | |||||||||||||||||
言語 | ja | |||||||||||||||||
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内容記述タイプ | Abstract | |||||||||||||||||
内容記述 | ZrO_2-based composite ceramics containing 25 mol% Al_2O_3 and 1.125 mol% Y_2O_3, [i.e.], with a composition of 75mol%ZrO_2(1.5mol%Y_2O_3)-25mol%Al_2O_3, were fabricated using pulsed electric-current pressure sintering (PECPS) of solid solution powders prepared by the neutralization co-precipitation method. They were sintered at 1573 to 1623 K (1300~1350°C) for 6.0×10^2 s (10 min) under 50 MPa in Ar. Thus-obtained ceramics consisted of 130~150 nm grains, composed of α-Al_2O_3 and tetragonal-ZrO_2 with a small amount of monoclinic-ZrO_2. Dense ceramics with high relative densities ≥99.5% revealed high mechanical properties: bending strength (σ_b) higher than 1.3 GPa and simultaneous fracture toughness (K_IC) higher than 15.5 MPa·m^1/2, which value was evaluated by the indentation fracture toughness (IF) test. X-ray diffraction (XRD) analysis, SEM and TEM with EDS observations on the as-prepared and calcined powders, and the microstructures of ceramics demonstrated the homogeneous grain distribution of t-ZrO_2 and α-Al_2O_3, with the former grains being surrounded by the latter which had segregated from the calcined cubic ZrO_2 solid solution containing both Al_2O_3 and Y_2O_3. | |||||||||||||||||
言語 | en | |||||||||||||||||
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内容記述タイプ | Other | |||||||||||||||||
内容記述 | 論文名・英文タイトル・keywords・抄録中の^1/2 ^2は上付き文字、_2 _3 _b _IC は下付き文字、[i.e.]は斜体文字 | |||||||||||||||||
言語 | ja | |||||||||||||||||
書誌情報 |
ja : 同志社大学ハリス理化学研究報告 en : The Harris science review of Doshisha University 巻 58, 号 2, p. 51-62, 発行日 2017-07-31 |
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言語 | ja | |||||||||||||||||
出版者 | 同志社大学ハリス理化学研究所 | |||||||||||||||||
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言語 | en | |||||||||||||||||
出版者 | Harris Science Research Institute of Doshisha University | |||||||||||||||||
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収録物識別子タイプ | PISSN | |||||||||||||||||
収録物識別子 | 21895937 | |||||||||||||||||
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収録物識別子タイプ | NCID | |||||||||||||||||
収録物識別子 | AA12716107 | |||||||||||||||||
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権利者名 | 同志社大学ハリス理化学研究所 | |||||||||||||||||
言語 | ja | |||||||||||||||||
権利者名 | Harris Science Research Institute of Doshisha University | |||||||||||||||||
言語 | en | |||||||||||||||||
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関連タイプ | isFormatOf | |||||||||||||||||
識別子タイプ | URI | |||||||||||||||||
関連識別子 | https://doors.doshisha.ac.jp/opac/opac_link/bibid/SB12902196/?lang=0 | |||||||||||||||||
言語 | ja | |||||||||||||||||
関連名称 | 掲載刊行物所蔵情報へのリンク / Link to Contents | |||||||||||||||||
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内容記述タイプ | Other | |||||||||||||||||
内容記述 | application/pdf | |||||||||||||||||
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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 | 501.49 |