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首页> 外文会议>Advances in bioceramics and porous ceramics III >THERMAL SHOCK PROPERTIES OF POROUS ALUMINA FOR SUPPORT CARRIER OF HYDROGEN MEMBRANE MATERIALS
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THERMAL SHOCK PROPERTIES OF POROUS ALUMINA FOR SUPPORT CARRIER OF HYDROGEN MEMBRANE MATERIALS

机译：多孔铝作为氢膜材料载体的热冲击性能

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摘要

The thermal shock resistance of α-alumina porous capillary, the support material for hydrogen-permselective microporous ceramic membrane was studied. To study the effect of porosity on the thermal shock resistance systematically, porous alumina with different porosities was fabricated, and the thermal shock resistance of the fabricated samples as well as the porous capillary was estimated by the infrared radiation heating method. The mechanical and thermal properties concerned to the thermal shock resistance were also measured and the effect of the porosity on the properties was carefully examined. The fracture strength was not changed with temperature, but decreased with the porosity. The fracture toughness, Young's modulus and thermal conductivity were also decreased with porosity. Thermal shock resistance of porous alumina was estimated quantitively by the experimental thermal shock parameters, thermal shock strength, R_(Ic) and thermal shock fracture toughness, R_(2c). The thermal shock parameters of porous alumina were much lower than dense alumina, and decreased with porosity due to the decreasing of fracture strength and thermal conductivity. The experimental thermal shock strength was good accordance with that calculated from the material properties in this study. Thermal shock strength of porous alumina capillary at service temperature could be estimated by the comparison experimental and calculated thermal shock strength.
机译：研究了氢选择性渗透微孔陶瓷膜支撑材料α-氧化铝多孔毛细管的耐热冲击性能。为了系统地研究孔隙率对耐热冲击性的影响，制备了不同孔隙率的多孔氧化铝，并通过红外辐射加热法估算了所制备样品以及多孔毛细管的耐热冲击性。还测量了与抗热震性有关的机械性能和热性能，并仔细检查了孔隙率对性能的影响。断裂强度不随温度变化，而随孔隙率下降。断裂韧性，杨氏模量和热导率也随孔隙率而降低。通过实验热冲击参数，热冲击强度R_（Ic）和热冲击断裂韧性R_（2c）定量评估多孔氧化铝的抗热冲击性。多孔氧化铝的热冲击参数远低于致密氧化铝，并且由于断裂强度和导热系数的降低而随孔隙率而降低。实验热冲击强度与根据这项研究中的材料性能计算得出的结果相符。通过比较实验和计算得出的热冲击强度可以估算出多孔氧化铝毛细管在使用温度下的热冲击强度。

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  • 会议地点 Daytona Beach FL(US);Daytona Beach FL(US)
  • 作者

    Sawao HONDA; Yuuki OGIHARA; Shinobu HASHIMOTO; Yuji IWAMOTO;

  • 作者单位

    Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology;

    rnDepartment of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology;

    rnDepartment of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology;

    rnDepartment of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物材料学;
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