A kind of preparation method of fission track sheet
A fission track and thin sheet technology, which is used in the field of fission track thin sheet preparation, can solve the problems of short grinding and polishing time, uneven force, irregular observation, etc., and achieve the effect of improving the efficiency and accuracy of sample preparation
Active Publication Date: 2017-02-22
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
The existing operation methods mainly have the following problems: (1) Manual grinding and polishing are prone to uneven force, resulting in uneven surface of the sheet; (2) It is impossible to monitor the progress of grinding and polishing at any time, and it is easy to cause grinding and polishing time Too short or too long, and need a stereo microscope to observe the grinding effect from time to time
Method used
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Embodiment 1
[0034] This embodiment provides a method for preparing fission track flakes ( figure 1 is the flow chart of the method), it may further comprise the steps:
[0035] Step 1: Use a 150-mesh cell sieve to obtain 1000-2000 apatite particles with a diameter of 60-200 μm; according to the optical classification of crystals, apatite in nature belongs to hexagonal cylinders. figure 2 is the image of apatite observed under a scanning electron microscope, image 3 is a schematic diagram of the largest surface of apatite particles;
[0036]Step 2: Prepare Epothin Epoxy Resin (epoxy resin) and Epothin Hardener (coagulant) at a volume ratio of 1:3, stir for 5 minutes to mix them evenly, dip 2-3ml into a glass slide with a small stirring rod, Then slowly inject the selected apatite particles, then slowly stir the resin and apatite particles with a toothpick, wait for the apatite particles to sink to the bottom of the resin and disperse and spread, let stand for 2 days, and wait until the...
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Abstract
The invention provides a manufacturing method of fission track sheets. The method includes the following steps that firstly, an automatic grinding device is used for roughly grinding primary products of the sheets till most particles are exposed on the surfaces of the sheets, then accurate grinding is performed till the largest faces of the most particles are exposed on the surfaces of the sheets, and next, the fission track sheets are obtained through fine grinding and polishing. The automatic grinding device is provided with an observation part capable of monitoring the grinding state of samples. Compared with the prior art, by means of the method, the sample preparation efficiency and the precision of the fission track sheets can be effectively improved.
Description
technical field [0001] The invention belongs to the fields of geology, fission track and crystal optics, and in particular relates to a preparation method of a fission track sheet. Background technique [0002] The fission track method is a commonly used thermal dating technique in the field of geosciences, and has been widely used to study geological issues such as the uplift history of orogenic belts, the tectonic-thermal evolution of sedimentary basins, and the evolution of landforms and topography. What is a fission track? In nature, the radioactive element U contained in minerals such as apatite and zircon 238 Fission has always occurred in geological history, and the two charged particles produced by fission will move in opposite directions. Affected by charge repulsion, a disturbed area will be generated along the particle trajectory, causing lattice damage (ie, radiation damage). After etching, these radiation damages can be seen under an optical microscope as fiss...
Claims
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IPC IPC(8): B24B1/00
CPCB24B1/00
Inventor 常健邱楠生刘念周圆圆
Owner CHINA UNIV OF PETROLEUM (BEIJING)