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Test method for resistivity and conductivity of ion-irradiated specimens in irradiation-damaged areas

A technology of ion irradiation and radiation damage, applied in the field of nuclear power, can solve the problems of not being able to provide high-frequency alternating current of tens of thousands of hertz, not having promotion value and practicability, and not considering the cost of the test, etc., and the test method is simple and easy , small error, low cost effect

Active Publication Date: 2018-12-04
中广核工程有限公司 +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the inherent deficiency of the ion irradiation test is that the penetration ability of ions is relatively poor (such as the penetration ability of iron ions on a high-energy accelerator is generally not more than 30 microns), resulting in ion irradiation of the sample (generally required in the irradiation process). Heating to a high temperature above 290 ° C, so the thickness of the sample needs to be at least 1 mm to ensure that the sample does not deform during the irradiation process and is easy to clamp and fix) Only a thin layer of the surface is an effective ion irradiation layer , and the rest of the area is the unirradiated substrate layer
[0008] However, the test equipment in existing conventional laboratories is far from being able to provide high-frequency alternating current with a frequency of tens of thousands of hertz. frequency alternating current
Therefore, the above method is only theoretically feasible, and does not have the promotion value and practicality in practice.

Method used

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  • Test method for resistivity and conductivity of ion-irradiated specimens in irradiation-damaged areas
  • Test method for resistivity and conductivity of ion-irradiated specimens in irradiation-damaged areas
  • Test method for resistivity and conductivity of ion-irradiated specimens in irradiation-damaged areas

Examples

Experimental program
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Effect test

experiment example 1

[0051] In order to test the accuracy of the mathematical calculation formula (2), the first unit conducts a thinning test on the first ion irradiation sample, and uses the mathematical calculation formula (2) to calculate, wherein, the first ion irradiation sample The parameters are: the length L is 11.56mm, the width B is 1.74mm, and the total thickness H before thinning 0 is 1.14mm, the thickness H of ion irradiation damage layer 1 It is 0.025mm (it can be calculated theoretically according to the ion irradiation parameters, or it can be obtained by a series of nano-indentation hardness test analysis on the ion irradiation sample cross-section);

[0052] The first ion irradiation sample was thinned twice successively, and the measured data are shown in Table 1.

[0053] Table 1 The thinning test data of the first ion irradiation sample

[0054] serial number

The thickness H of the sample after thinning 0 -H / 10 -3 m

Thickness of thinned layer H / 10 -3 ...

experiment example 2

[0061] In order to test the accuracy of the mathematical calculation formula (2), different operators of the second unit used different instruments and equipment to conduct thinning tests on the second ion irradiation sample, and calculated using the mathematical calculation formula (2), Among them, the parameters of the second ion irradiation sample are respectively: the length L is 8.9 mm, the width B is 2.63 mm, and the total thickness H before thinning is 0 is 0.92mm, the thickness H of ion irradiation damage layer 1 It is 0.025mm (it can be calculated theoretically according to the ion irradiation parameters, or it can be obtained by a series of nano-indentation hardness test analysis on the ion irradiation sample section).

[0062] Two thinning operations were performed on the second ion irradiation sample successively, and the measured data are shown in Table 2.

[0063] Table 2 The thinning test data of the second ion irradiation sample

[0064] serial numbe...

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Abstract

The invention discloses a method of testing resistivity of an ion irradiation sample irradiation damage area. The method comprises the following steps: 1) an ion irradiation sample comprises an irradiation damage layer and an ion irradiation undamaged substrate layer is provided, the general resistance R0 of the ion irradiation sample and the thickness H2 of the ion irradiation undamaged substrate layer are measured; 2) the ion irradiation sample is thinned, and the resistance R of the ion irradiation sample after thinning and the thickness H of the thinned layer are measured; and 3) the resistivity of the ion irradiation sample irradiation damage area is calculated according to the following mathematical computation formula. Besides, the invention also discloses a method of testing conductivity of the ion irradiation sample irradiation damage area. Thus, according to the method of testing the resistivity and the conductivity of the ion irradiation sample irradiation damage area, in a method of combining experiment and computation derivation, the resistivity and the conductivity of the ion irradiation sample irradiation damage area are acquired, the computation result is accurate, the testing method is simple and easy to operate, and the cost is low. The mathematical computation formula is shown as in the specifications.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a method for testing the resistivity and conductivity of an ion irradiation sample irradiation damage area. Background technique [0002] The service environment of nuclear power metal materials is mostly a strong radiation environment, and radiation damage is one of the main failure mechanisms of materials. Therefore, it is necessary to test and evaluate the radiation performance of materials in terms of material performance evaluation, material process improvement and equipment selection. During the irradiation test, testing and analyzing the change rule of material conductivity or resistivity is a common research method. [0003] The ion irradiation test has the advantages of low test cost, short cycle, no radioactivity in the sample after irradiation and easy subsequent analysis and testing operations, so it is usually used to replace the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/02
CPCG01R27/02
Inventor 束国刚李承亮徐贲陈骏冯楠刘飞华刘伟段远刚
Owner 中广核工程有限公司