Fabrication of Oxide Ceramics with High Fracture Strength and High Thermal Shock Resistance

高断裂强度和高热震稳定性氧化物陶瓷的制备

基本信息

  • 批准号:
    63850163
  • 负责人:
  • 金额:
    $ 10.24万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B).
  • 财政年份:
    1988
  • 资助国家:
    日本
  • 起止时间:
    1988 至 1990
  • 项目状态:
    已结题

项目摘要

In order to improve mechanical properties and thermal shock resistance of tetragonal zirconia polycrystals with high fracture strength and toughness, thermal stress fracture behavior and mechanical properties of yttria-doped tetragonal zirconia polycrystals (Y-TZP) and Y-YZP based ceramics were investigated. The thermal stress fracture of ceramic materials in the water-quenching test was initiated by the thermal stress due to the convective heat transfer accompanied by boiling of water. The thermal shock resistance of ceramic materials increased with increasing the fracture strength, thermal conductivity and thermal transfer coefficient and with decreasing Young's modulus, Poison's ratio and thermal expansion coefficient of the material. The thermal shock resistance of Y-TZP based ceramics was anormalously lower than the predicted value, because the toughening mechanism by the stress-induced tetragonal to monoclinic phase transformation did not function well against the thermal stress … More in Y-TZP ceramics. The increment of the grain size of Y-TZP ceramics increased the contribution of the transformation toughening against not only the mechanical-stress fracture but also the thermal-stress fracture, which consequently improved both fracture toughness and thermal shock resistance. Therefore, the thermal shock resistance of Y-TZP was correlated with the fracture toughness rather than fracture strength. Dispersion of A1_2O_3 particles into Y-TZP was useful for improving both the fracture strength and thermal shock resistance. On the other hand, dispersion of mullite particles and SiC whiskers into Y-TZP resulted in decreasing the relative density and fracture strength but in increasing the thermal shock resistance, because of the decrease of the thermal expansion coefficient and of the increase of the thermal conductivity. Hot isostatic pressing of the presintered body was useful to increase the relative density without the grain growth and to improve the fracture strength and thermal shock resistance. Less
为了提高具有高断裂强度和韧性的四氧化锆多晶陶瓷的力学性能和抗热震性,研究了氧化钇掺杂四氧化锆多晶(Y-TZP)及其基陶瓷的热应力断裂行为和力学性能。陶瓷材料在水淬试验中的热应力断裂是由水沸腾时的对流传热产生的热应力引发的。陶瓷材料的抗热震性随断裂强度、导热系数和传热系数的增大而增大,随材料的杨氏模量、泊松比和热膨胀系数的减小而减小。Y-TZP基陶瓷的抗热震性低于预测值,这是由于应力诱导四方相向单斜相转变的增韧机制不能很好地抵抗热应力 ...更多信息 在Y-TZP陶瓷中。Y-TZP陶瓷晶粒尺寸的增加,不仅增加了相变增韧对机械应力断裂的贡献,而且增加了相变增韧对热应力断裂的贡献,从而提高了断裂韧性和抗热震性。因此,Y-TZP的抗热震性与断裂韧性相关,而与断裂强度无关。Al_2O_3颗粒在Y-TZP中的分散有利于提高Y-TZP的断裂强度和抗热震性。另一方面,莫来石颗粒和SiC晶须分散到Y-TZP中导致相对密度和断裂强度降低,但提高了抗热震性,因为热膨胀系数的降低和热导率的增加。对预烧结体进行热等静压处理,可提高材料的致密度,且不发生晶粒长大,提高材料的断裂强度和抗热震性。少

项目成果

期刊论文数量(33)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
寺内 信哉,佐藤 次雄,遠藤 忠,島田 昌彦: "YーTZP/SiC複合体の焼結と機械的性質" 粉体および粉末冶金. 37. 1063-1066 (1990)
Shinya Terauchi、Tsuguo Sato、Tadashi Endo、Masahiko Shimada:“Y-TZP/SiC 复合材料的烧结和机械性能”粉末和粉末冶金。 37. 1063-1066 (1990)
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    0
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Tsugio Sato,Tadashi Endo and Masahiko Shimada,: "Postsintering Hot Isostatic Pressing of CeriaーDoped Tetragonal Zirconia/Alumina Composites in an ArgonーOxygen Gas Atmosphere" J.Amer.Ceram.Soc.761-764 (1989)
Tsugio Sato、Tadashi Endo 和 Masahiko Shimada,“氩氧气体气氛中氧化铈掺杂四方氧化锆/氧化铝复合材料的后烧结热等静压”J.Amer.Ceram.Soc.761-764 (1989)
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    0
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Masayuki Ishitsuka,Tsugio Sato,Tadashi Endo and Masahiko Shimada,: "Thermal Shock Fracture Behaviour of ZrO_2 Based Ceramics" J.Mater,Sci.,. 24. 4057-4061 (1989)
Masayuki Ishitsuka、Ttsugio Sato、Tadashi Endo 和 Masahiko Shimada,“ZrO_2 基陶瓷的热冲击断裂行为”J.Mater,Sci.,。
  • DOI:
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    0
  • 作者:
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Tsugio Sato,Tadashi Endo and Masahiko Shimada,: "Postsintering Hot Isostatic Pressing of CeriaーDoped Tetragonal Zirconia/Alumina Composites in an ArgonーOxygen Gas Atmosphere" J.Amer.Ceram.Soc.,. 72. 761-764 (1989)
Tsugio Sato、Tadashi Endo 和 Masahiko Shimada,“氩氧气体气氛中氧化铈掺杂四方氧化锆/氧化铝复合材料的后烧结热等静压”J.Amer.Ceram.Soc.,72. 761-764 (1989)
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    0
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Masayuki Ishitsuka, Tsugio Sato, Tadashi Endo, Masahiko Shimada and Haruo Arashi: "Raman Microprobe Spectroscopic Studies on Thermal Shock Fracture of ZrO_2-Based Ceramics" J. Mater. Sci. Lett.8. 638-640 (1989)
Masayuki Ishitsuka、Tsugio Sato、Tadashi Endo、Masahiko Shimada 和 Haruo Arashi:“ZrO_2 基陶瓷热冲击断裂的拉曼显微探针光谱研究”J. Mater。
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SHIMADA Masahiko其他文献

SHIMADA Masahiko的其他文献

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{{ truncateString('SHIMADA Masahiko', 18)}}的其他基金

Altered brain volume in neuropathic pain patients
神经性疼痛患者的脑容量改变
  • 批准号:
    16K11743
  • 财政年份:
    2016
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of the method of treatment for neuropathic pain -Basic study of the effect of iontophoresis-
神经性疼痛治疗方法的开发-离子电渗疗法效果的基础研究-
  • 批准号:
    22592253
  • 财政年份:
    2010
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Study on the intravenous sedation with propofol - Function of Swallowing, BIS monitor and blood concentration of propofol -
异丙酚静脉镇静研究-吞咽功能、BIS监测及异丙酚血药浓度-
  • 批准号:
    16591997
  • 财政年份:
    2004
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Study on the intravenous sedation with propofal - BIS monitor and blood concentration of propofol
丙泊酚静脉镇静-BIS监测及丙泊酚血药浓度研究
  • 批准号:
    13672095
  • 财政年份:
    2001
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Synthesis and Characterization of Multi-Component Metal Nitrides
多组分金属氮化物的合成与表征
  • 批准号:
    13450263
  • 财政年份:
    2001
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Gallium Nitride Single Crystal Growth by Flux Method
助熔剂法生长氮化镓单晶
  • 批准号:
    12555175
  • 财政年份:
    2000
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on Synthesis and Crystal Structure of Rare-Earth Calcium Silicate
稀土硅酸钙的合成及晶体结构研究
  • 批准号:
    10450238
  • 财政年份:
    1998
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Study on Fabrication of high Luminous Materials for high Performance Display Devices
高性能显示器件用高发光材料的制备研究
  • 批准号:
    09555187
  • 财政年份:
    1997
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on Stress-Induced Phase Transformation of Rare Earth Aluminates
稀土铝酸盐应力诱导相变研究
  • 批准号:
    07455262
  • 财政年份:
    1995
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on Pressure Sintering of beta-FeSi_2 with highly Efficient Thermoelectric Properties
高效热电性能β-FeSi_2的压力烧结研究
  • 批准号:
    06555266
  • 财政年份:
    1994
  • 资助金额:
    $ 10.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
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