Crack Growth Mechanism in Structural Ceramics and Microstructural Analysis

结构陶瓷中的裂纹扩展机制及微观结构分析

基本信息

  • 批准号:
    07650778
  • 负责人:
  • 金额:
    $ 1.34万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    1995
  • 资助国家:
    日本
  • 起止时间:
    1995 至 1996
  • 项目状态:
    已结题

项目摘要

Microstructures of the process zone and the process zone wake which are developed around growing cracks were studied by scanning and transmission electron microscopy. The results obtained are as follows.1) The anisotropy of bending strength (sigma_b) and fracture toughness (K_<IC>) in hot-pressed (HP) Si_3N_4 ceramics has been studied at room temperature to 1573 K.Specimens were cut out parallel (HP-LS,HP-LT) and perpendicular (HP-SL,HP-ST) to the hot-pressing direction. The chevron notched beam method was employed for the K_<IC> measurement and the three-point bending test for obtaining the sigma_b. The anisotropy was found in the K_<IC> at the testing temperature up to 1073 K,but hardly at 1473 K.However, it reappeared at 1573 K remarkably. In the sigma_b this was discernible up to 1473K,although differences between the HP-LT and the HP-ST specimens decreased with increasing temperature and diminished at 1573 K.The results obtained were discussed in connection with the orientation of elongated beta-phase grains, comparing with those of pressureless sintered (PLS) specimens.2) The effects of temperature on bending strength and fracture toughness of zirconia ceramics have been studied in connection with microstructural changes in the process zone wake of a crack. Three point bending and fracture toughness measurement tests have been carried out at room temperature, 873 and 1273K.Microstructures in the vicinity of cracks and on fracture surfaces were examined by SEM,TEM and X-ray diffraction techniques. At the higher temperatures the three-point bending strength and the K_<IC> values decreased to about one third of that at room temperature. The stress induced phase transformation from tetragonal structure to monoclinic one has occurred more greatly at room temperature than at the higher temperatures. In the case of cyclically fatigued specimens, microstructures developed around fatigue cracks have also been studied by SEM and TEM techniques.
用扫描和透射电子显微镜研究了裂纹扩展过程区及裂纹扩展过程区尾迹的微观结构。1)研究了热压Si_3N_4陶瓷在室温至1573 K的弯曲强度(σ_B)和断裂韧性(K_)的各向异性。<IC>采用人字形切口梁法测量K_b,用三点弯曲法测量σ_B。<IC>在1073 K以下的温度范围内,K_(1-x)都表现出各向异性,而在1473 K时几乎没有各向异性,但在1573 K时又出现了明显的各向异性。<IC>在sigma_B中,直到1473 K,这是可辨别的,尽管HP-LT和HP-ST试样之间的差异随着温度的升高而减小,并且在1573 K时减小。与无压烧结(PLS)陶瓷相比。本文研究了温度对氧化锆陶瓷抗弯强度和断裂韧性的影响,以及裂纹尾流过程区显微组织的变化。在室温、873和1273K下进行了三点弯曲和断裂韧性测试,用扫描电镜、透射电镜和X射线衍射分析了裂纹附近和断口的显微组织。在较高温度下,三点弯曲强度和K值下降到室温下的三分之一左右。<IC>在室温下,应力诱导的由四方晶系向单斜晶系的相变比高温下的大得多。在循环疲劳试样的情况下,疲劳裂纹周围的显微组织也已通过SEM和TEM技术进行了研究。

项目成果

期刊论文数量(16)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
菅野幹男他: "Si_3N_4焼結体の高温強度特性" 日本機械学会・平成7年度材料力学部門講演会講演論文集. Vol.B. 331-332 (1995)
Mikio Kanno 等:“Si_3N_4 烧结体的高温强度特性”日本机械工程学会论文集 1995 年材料力学分部讲座第 331-332 卷(1995 年)。
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    0
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菅野幹男他: "ジルコニア薄板材の疲労き裂進展挙動に及ぼす雰囲気の影響" 精密工学会東北支部学術講演会講演論文集. 69-70 (1996)
Mikio Kanno等人:“气氛对氧化锆薄板材料的疲劳裂纹扩展行为的影响”日本精密工程学会东北分会学术会议记录69-70(1996)。
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    0
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Mikio Sugano, Tadaaki Satake and Rikiya Ishikawa: "The Effects of Atmosphere on Fatigue Crack Growth Behavior in Zirconia" Proc.of the 1996 Annual Meeting of JSPE Tohoku Chapter. 69-71 (1996)
Mikio Sugano、Tadaaki Satake 和 Rikiya Ishikawa:“大气对氧化锆疲劳裂纹扩展行为的影响”,JSPE 东北分会 1996 年年会会议记录。
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    0
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菅野幹男他: "ジルコニア焼結体のき裂進展挙動と微構造" セラミックスの破壊力学に関するシンポジウム講演論文集. 96-52. 68-71 (1996)
Mikio Kanno 等人:“氧化锆烧结体的裂纹扩展行为和微观结构”陶瓷断裂力学研讨会论文集 96-52 (1996)。
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    0
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Mikio Sugano, Rikiya Ishikawa, Makoto Ebina and Tadaaki Satake: "Fatigue Crack Growth Behavior of Zirconia Thin Plates under Alternate Plane Bending" Proc.of the 1996 Annual Meeting of JSME/MMID. Vol.B,96-10. 413-414 (1995)
Mikio Sugano、Rikiya Ishikawa、Makoto Ebina 和 Tadaaki Satake:“交替平面弯曲下氧化锆薄板的疲劳裂纹扩展行为”JSME/MMID 1996 年年会会议记录。
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SUGANO Mikio其他文献

Wooden Breastにおける神経筋接合部の変化
木乳房神经肌肉接头的变化
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    YAMADA Michi;WATANABE Yuki;YOSHIDA Hanako;MITANI Syunoa;HARA Takayuki;TAGAMI Takayoshi;IWASAKI Tomohito;SUGANO Mikio;TAKEHANA Kazushige;SUGIYAMA Shinji;EBIHARA Tetsuya;KOYAMA Yoh-ichi;YAMADA Koji;NAKATSUJI Hiroki;大矢樹,松田幸大,井林功太,長谷川靖洋,岩崎智仁;上坂朋美,齊藤美悠,大久保彩夏,長谷川靖洋,渡邉敬文,川崎武志,岩崎智仁
  • 通讯作者:
    上坂朋美,齊藤美悠,大久保彩夏,長谷川靖洋,渡邉敬文,川崎武志,岩崎智仁
筋損傷部位で生じる酸化タンパク質への金コロイド標識と電子顕微鏡観察の試み
尝试用胶体金标记和电子显微镜观察肌肉损伤部位产生的氧化蛋白
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    YAMADA Michi;WATANABE Yuki;YOSHIDA Hanako;MITANI Syunoa;HARA Takayuki;TAGAMI Takayoshi;IWASAKI Tomohito;SUGANO Mikio;TAKEHANA Kazushige;SUGIYAMA Shinji;EBIHARA Tetsuya;KOYAMA Yoh-ichi;YAMADA Koji;NAKATSUJI Hiroki;大矢樹,松田幸大,井林功太,長谷川靖洋,岩崎智仁
  • 通讯作者:
    大矢樹,松田幸大,井林功太,長谷川靖洋,岩崎智仁
Effects of Collagen Casing-Containing Diets Fed to Sows during Late Pregnancy Lactation and Farrowing on the Birth Performance, Growth, Meat Product and Serum Components in Piglets
母猪妊娠后期、哺乳期和产仔期饲喂含胶原蛋白肠衣对仔猪产性能、生长、肉制品和血清成分的影响
  • DOI:
    10.5938/youton.54.3_130
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    YAMADA Michi;WATANABE Yuki;YOSHIDA Hanako;MITANI Syunoa;HARA Takayuki;TAGAMI Takayoshi;IWASAKI Tomohito;SUGANO Mikio;TAKEHANA Kazushige;SUGIYAMA Shinji;EBIHARA Tetsuya;KOYAMA Yoh-ichi;YAMADA Koji;NAKATSUJI Hiroki
  • 通讯作者:
    NAKATSUJI Hiroki
ニワトリ異常硬化胸肉の組織と物性
异常硬化鸡胸肉的组织和物理特性
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    YAMADA Michi;WATANABE Yuki;YOSHIDA Hanako;MITANI Syunoa;HARA Takayuki;TAGAMI Takayoshi;IWASAKI Tomohito;SUGANO Mikio;TAKEHANA Kazushige;SUGIYAMA Shinji;EBIHARA Tetsuya;KOYAMA Yoh-ichi;YAMADA Koji;NAKATSUJI Hiroki;大矢樹,松田幸大,井林功太,長谷川靖洋,岩崎智仁;上坂朋美,齊藤美悠,大久保彩夏,長谷川靖洋,渡邉敬文,川崎武志,岩崎智仁;岩崎智仁
  • 通讯作者:
    岩崎智仁
ニワトリ異常硬化胸肉の組織と構造
异常硬化鸡胸肉的组织和结构
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    YAMADA Michi;WATANABE Yuki;YOSHIDA Hanako;MITANI Syunoa;HARA Takayuki;TAGAMI Takayoshi;IWASAKI Tomohito;SUGANO Mikio;TAKEHANA Kazushige;SUGIYAMA Shinji;EBIHARA Tetsuya;KOYAMA Yoh-ichi;YAMADA Koji;NAKATSUJI Hiroki;大矢樹,松田幸大,井林功太,長谷川靖洋,岩崎智仁;上坂朋美,齊藤美悠,大久保彩夏,長谷川靖洋,渡邉敬文,川崎武志,岩崎智仁;岩崎智仁;岩崎智仁
  • 通讯作者:
    岩崎智仁

SUGANO Mikio的其他文献

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{{ truncateString('SUGANO Mikio', 18)}}的其他基金

Role of ARNT-Hypoxia Inducible Factor 1 in development of pulmonary arterial hypertension
ARNT-缺氧诱导因子 1 在肺动脉高压发展中的作用
  • 批准号:
    23592039
  • 财政年份:
    2011
  • 资助金额:
    $ 1.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
In situ Observation of Crack Growth in Structural Ceramics and Microstructural Characterization
结构陶瓷裂纹扩展的原位观察和微观结构表征
  • 批准号:
    09650728
  • 财政年份:
    1997
  • 资助金额:
    $ 1.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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牙科氧化锆的超快烧结:成分-加工-性能关系与高通量快速失败筛选
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Mechanism underlying discoloration of monolithic zirconia induced by photochemical reactions
光化学反应引起整体氧化锆变色的机制
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Investigation of the cause of defects that occur in the joints of zirconia implants using the torsion test
使用扭转试验调查氧化锆植入物关节中发生缺陷的原因
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  • 财政年份:
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利用镧系元素配合物开发具有持续抗菌活性的高透光氧化锆
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Integrated approach to develop and appropriately characterize a novel Zirconia corrosion protection
开发并适当表征新型氧化锆腐蚀防护的综合方法
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Development of Zirconia Dental Implant Material Gaining Titanium Ability Using Atomic Layer Deposition
利用原子层沉积开发获得钛能力的氧化锆牙科植入材料
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    22K10046
  • 财政年份:
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