Collaboration of nano-indenter and atomic force microscope : a trial to make a new apparatus for obtaining mechanical properties of solid materials

本研究利用一种纳米压痕测试仪(Akashi Co.LTD)，以测量矿物的力学性能。我们的研究结果如下：(1)首先用硬质合金试件对试验台的弹性变形进行了校核。加载过程中的位移被认为是仪器的弹性变形。(2)我们还用一块完全塑性的铅试件对测试仪的弹性回弹进行了校核。(3)恒定载荷下的位移可以推导出一个流变参数。(4)沸石和石英的杨氏模量随着压力的增加而增加。得到的值与之前获得的值不一致。对来自高应变区和低应变区的两个Bygdin砾岩样品进行了压痕，提供了一系列数据，表明高应变区样品中的石英颗粒比低应变区样品中的石英颗粒要强。

This study utilizes a nano-indentation tester (AKASHI CO. LTD) in order to measure mechanical properties of minerals. Our results follows.(1)We first checked the elastic deformation of the testing apparatus by using a test piece of WC which is regarded as a rigid material. The displacement during loading is regarded as the elastic deformation of the apparatus.(2)We also checked the elastic rebound of the testing apparatus by using a test piece of Pb which is regarded as a completely plastic material.(3)A rheological parameter can be deduced by the displacement at a constant load.(4)Young's moduli of piemontite and quartz are revealed to be increased with increasing pressure. The obtained values are not consistent to the previously obtained values. We have still problems on the accuracy of elastic constants.(5)Chips of two Bygdin conglomerate samples, one from the high strain zone and the other from the low strain zone, were indented, and provides a series of data suggesting that quartz grains in the high strain zone samples are stronger than those in the low strain zone.