Micro-mechanics of Ceramic-Whiskers

陶瓷晶须的微观力学

• 批准号: 05650086
• 负责人: IWANAGA Hiroshi
• 金额: $ 1.34万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650086/
• 关键词: Ceramic-Whisker; Carbon coil; Carbon fiber; Tensile strength; In situ observation; カーボンコイル; カーボンファイバー

A method of measuring tensile strength of a filament with a diameter of mum order has been devised. The method allows us to measure the tensile load in the range of 20 to 1500mg with an accuracy of about 1 mg under optical-microscope observation. In oder to measure the tensile strength, the cross sectional area of the specimen is estimated from a SEM micrograph of the fractured surface taken parallel to the specimen axis. Srtain is calculated by comparing the distance of markers, i.e.tiny whiskers distributed on a specimen, on micrographs taken at each stage of loading. The Young's modulus and the tensile strength of a pitch-based isotropic carbon filament thus obtained were about 60GPa and 850MPa, respectively.

设计了一种测量微米级直径长丝拉伸强度的方法。该方法允许我们在光学显微镜观察下测量20至1500mg范围内的拉伸载荷，精度约为1mg。为了测量拉伸强度，根据平行于样本轴拍摄的断裂表面的SEM显微照片来估计样本的横截面积。 Srtain 是通过比较在加载的每个阶段拍摄的显微照片上标记（即分布在样本上的微小晶须）的距离来计算的。由此获得的沥青基各向同性碳丝的杨氏模量和拉伸强度分别为约60GPa和850MPa。

项目成果

H.Iwanaga, M.Fujii: "Octahedral multiple-twin model of tetrapod ZnO crystals" Phil.Mag.A.69. 1125-1129 (1994)

H.Iwanaga、M.Fujii：“四脚 ZnO 晶体的八面体多孪晶模型”Phil.Mag.A.69。

M.Fujii,H.Iwanaga: "Morphology and rotation twin in ZnSe on GaAs (111)" J.Mater.Sci.28. 4068-4072 (1993)

M.Fujii、H.Iwanaga：“GaAs (111) 上 ZnSe 的形态和旋转孪晶”J.Mater.Sci.28。

H.Iwanaga: "Morphology and rotation twin in ZnSe on GaAs(111)" Journal of Materials Science. 28. 4068-4072 (1993)

H.Iwanaga：“GaAs(111) 上 ZnSe 的形态和旋转孪晶”材料科学杂志。

H.IWanaga.M.Fujii.: "Octahedral multiple-twin model of tetrapod Zno crystals" Phil.Mag.A. 69. 1125-1129 (1994)

H.IWanaga.M.Fujii.：“四脚 Zno 晶体的八面体多孪晶模型”Phil.Mag.A.

S.Takeuchi,H.Iwanaga: "Some evidence for the octa-twin model of tetrapod ZnO particles" J.Crystal Growth. 141. 234-238 (1994)

S.Takeuchi、H.Iwanaga：“四脚 ZnO 颗粒八孪晶模型的一些证据”J.Crystal Growth。