Mechanical heterogeneity in rocks with a nano-indentation tester

使用纳米压痕测试仪测量岩石的机械不均匀性

• 批准号: 10440140
• 负责人: MASUDA Toshiki
• 金额: $ 7.55万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10440140/
• 关键词: nano-indentation cester; atomic force microscope; minerals; Young's modulus; diamond indenter; plastic deformation; point contact deformation; lattice creasing; ヤング率; 高圧力; 石英; 電気石; 紅簾石; ビッカース圧子; 圧痕; 超微小硬度; 透過型電子顕微鏡; 高分解能電子顕微鏡法; 塑性流動; 脆性

A nano-indentation tester (RIDER-1) with a pyramidal diamond indenter can measure the load and the displacement with a high precision during the loading and unlaoding cycle. Vickers indentation test of natural quartz were performed with a load of 98 mN at room temperature and one atmosphere. Atomic force microscopy revealed no evidence of fracturing during indentation. Transmission electron microscope observations indicate that no dislocations were generated during the indentation tests. However, high resolution electron microscopy revealed that sharp creases of crystal lattices had developed. These observations lead to the conclusion that quartz deformed plastically even at room temperature. The plastic strain was accommodated by the mechanism of lattice creasing, which is described here for the first time. Young's modulus of quartz, piedmontite and glaucophane were also measured with the Oliver-Pharr method, the results being 14.7, 37.1 and 46 GPa, respectively.

采用锥形金刚石压头的RIDER-1型纳米压痕仪可以高精度地测量加载和卸载过程中的载荷和位移。在室温和一个大气压下，以98 mN的载荷对天然石英进行了维克斯压痕试验。原子力显微镜显示压痕过程中没有断裂的证据。透射电子显微镜观察表明，在压痕试验期间没有产生位错。然而，高分辨率电子显微镜显示，晶格的尖锐折痕已经发展。这些观察结果导致石英即使在室温下也会塑性变形的结论。塑性应变通过晶格褶皱机制来调节，这在本文中是首次描述。用Oliver-Pharr方法测量了石英、绿柱石和蓝闪石的杨氏模量，结果分别为14.7、37.1和46 GPa。

项目成果

増田俊明: "回るか回らないか,それが問題だ:snowball構造の形成過程について"地学雑誌. 108. 94-109 (1999)

Toshiaki Masuda：“无论它旋转与否，这就是问题：关于雪球结构的形成过程”Geogaku Magazine 108. 94-109 (1999)。

Komiya, T., Maruyama, S., Masuda, T., Nohda, S., Hayashi, M.& Okamoto, K.: "Plate tectonics at 3.8-3.7 Ga field evidence from the lsua accretionary complex ; southern West Greenland."Journal of Geology. 107. 515-554 (1999)

小宫，T.，丸山，S.，增田，T.，野田，S.，林，M.

Takahashi,M.,Nagahama,H.,Masuda,T.& Fujimura,A.: "Fractal analysis of experimentally, dynamically recrystallized quarty grains and its possible application as a strain mate meter"Journal of Structural Geology. 20. 269-275 (1998)

高桥，M.，长滨，H.，增田，T.

Masuda,T.,Hiraga,T.,Ikei,H.,Kanda,H.,Kugimiya,Y.& Akizuki,M.: "Plastic deformation of quarty at room temperature : a Vickers nano-indentation test"Geophysical Research Letters. 27. 2773-2776 (2000)

增田T.、平贺T.、池井H.、神田H.、钉宫Y.

T.Masuda,T.Hiraga,H.Ikei,H.Kanda,Y.Kugimiya and M.Akizuki: "Plastic deformationof quartzat room temperature : a Vickers nano-indentationtest"Geophysical Research Letters. 27・17. 2773-2776 (2000)

T. Masuda、T. Hiraga、H. Ikei、H. Kanda、Y. Kugimiya 和 M. Akizuki：“石英室温下的塑性变形：维氏纳米压痕测试”地球物理研究快报 27・17。 (2000)