Mechanical polishing solution for preparing EBSD sample, preparation method and mechanical polishing method

A technology of mechanical polishing and polishing liquid, which is applied in the preparation of test samples, polishing compositions containing abrasives, etc., can solve the problems of complicated preparation process, long time consumption, low calibration rate, etc., and achieves simple operation and short time consumption. , the effect of high calibration rate

Inactive Publication Date: 2016-08-10
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of mechanical polishing liquid for preparing EBSD samples, preparation method and mechanical polishing for the technical deficiencies and existing problems such as complex preparation process of existing nickel-based single crystal superalloy EBSD samples, long time consumption, low calibration rate, etc. method, which has the advantages of simple polishing liquid preparation, easy implementation, good polishing effect, and high sample calibration rate. This mechanical polishing method can effectively remove the stress layer on the surface of EBSD samples

Method used

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  • Mechanical polishing solution for preparing EBSD sample, preparation method and mechanical polishing method
  • Mechanical polishing solution for preparing EBSD sample, preparation method and mechanical polishing method
  • Mechanical polishing solution for preparing EBSD sample, preparation method and mechanical polishing method

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Embodiment 2

[0056] Experimental alloy DD407, as per figure 1 The sequence of procedures shown is for mechanical polishing of the samples.

[0057] (1) Cutting: cutting DD407 samples by wire cutting method;

[0058] In this embodiment, the nickel-based single crystal superalloy DD407 to be cut is fixed on a wire cutting machine, and cut along the section to be analyzed. The thickness of the DD407 sample is 5-6 mm.

[0059] (2) Cleaning: Use acetone to clean the DD407 sample cut in step (1) to remove the oil or other pollutants remaining on the surface of the sample during the cutting process of the DD407 sample, then rinse with water, dehydrate and dry with ethanol;

[0060] In this embodiment, when using acetone to clean the cut DD407 sample, dip a clean brush into acetone to scrub the surface of the DD407 sample, and then rinse it with water.

[0061] (3) Mounting: The DD407 sample cleaned in step (2) was mounted using the hot-press mounting method, and the DD407 sample was placed in t...

Embodiment 3

[0076] Experimental alloy DD406, as per figure 1 The sequence of procedures shown is for mechanical polishing of the samples.

[0077] (1) Cutting: cutting DD406 samples by wire cutting method;

[0078] In this embodiment, the nickel-based single crystal superalloy DD406 to be cut is fixed on a wire cutting machine, and cut along the section to be analyzed. The thickness of the DD406 sample is 5-6 mm.

[0079] (2) Cleaning: Clean the DD406 sample cut in step (1) with acetone to remove the oil or other pollutants remaining on the surface of the sample during the cutting process of the DD406 sample, then rinse with water, dehydrate and dry with ethanol;

[0080] In this embodiment, when using acetone to clean the cut DD406 sample, use a clean brush dipped in acetone to scrub the surface of the DD406 sample, and then rinse it with water.

[0081] (3) Mounting: The DD406 sample cleaned in step (2) was mounted using the hot-press mounting method, and the DD406 sample was placed i...

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Abstract

The invention discloses a mechanical polishing solution for preparing an EBSD sample, a preparation method and a mechanical polishing method, and belongs to the technical field of Ni-base single crystal superalloy crystal orientation analysis. The mechanical polishing method of the Ni-base single crystal superalloy EBSD sample is provided for solving the problems that the Ni-base single crystal superalloy EBSD sample is complex in preparation process, time-consuming, low in indexing rate and the like, and the mechanical polishing method with easy preparation of the polishing solution is easy and convenient to operate, low in cost, good in polishing effect and high in indexing rate. The polishing solution is composed of 25 wt%-30 wt% of colloidal silicon dioxide, 2 wt%-3 wt% of hydrogen peroxide, 1 wt%-2 wt% of oxalic acid, 2 wt%-3 wt% of glycerinum, and the balance a pH modifier and distilled water. The mechanical polishing method comprises the steps of (1) cutting, (2) cleaning, (3) inserting, (4) grinding and (5) mechanical polishing. The mechanical polishing method is easy to implement, low in energy consumption and suitable for preparation of the Ni-base single crystal superalloy EBSD sample.

Description

Technical field: [0001] The invention relates to the technical field of crystal orientation analysis of nickel-based single crystal superalloys, in particular to a mechanical polishing liquid for preparing EBSD samples, a preparation method and a mechanical polishing method. Background technique: [0002] EBSD technology is a microscopic characterization technology assembled on a scanning electron microscope, and it is an important means for material crystal orientation and microstructure analysis. The EBSD test excites the electron beam on the surface of the inclined sample in the scanning electron microscope and forms a diffraction Kikuchi band (diffraction pattern), and then calibrates the backscattering diffraction pattern to realize the crystal orientation, phase, grain boundary properties, lattice constant, and strain of the sample. distribution analysis. [0003] Nickel-based single crystal superalloys are widely used in aviation, aerospace, navigation, energy and ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F3/06C09G1/02G01N1/32
CPCC23F3/06C09G1/02G01N1/32
Inventor 高斯峰肖俊峰南晴张炯李永君唐文书朱立春
Owner XIAN THERMAL POWER RES INST CO LTD
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