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Coloring method of color metallograph of iron-based zincizing or galvanizing layer

A technology of color metallography and galvanized layer, applied in the preparation of test samples, etc., can solve the problems of grain boundary display clarity, phase distinction, degree of accuracy and poor accuracy of display results, and achieve good coloring effect, good repeatability, good stability effect

Active Publication Date: 2017-07-21
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the metallographic samples of galvanizing and galvanizing are mainly corroded with 4% nitric acid alcohol, and there are poor phenomena in the clarity of grain boundaries, the degree of phase distinction, the display of contemplation and the accuracy of results, and now There is no successful case of color metallographic coloring technology in galvanized and galvanized metallographic structure

Method used

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  • Coloring method of color metallograph of iron-based zincizing or galvanizing layer

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Effect test

Embodiment 1

[0030] The iron-based galvanizing layer or the coloring method of the color metallography of the galvanized layer provided by the embodiment of the present invention comprises the following steps:

[0031] Grinding: use 400#, 600#, 800# metallographic sandpaper to polish the iron-based galvanized (galvanized) sample in sequence, and ensure that the scratches on the surface of the sample only face one direction and are evenly distributed in each grinding process , and rinse with water, rotate the sample 90° before proceeding to the next grinding process;

[0032] Polishing: After the sample is polished, the iron-based galvanized (plated) galvanized sample is held on a polishing machine for polishing; before polishing, the polishing paste is applied to the polishing cloth and smoothed, and the hand is kept steady during the polishing process and water is continuously added; among them The polishing cloth is canvas, and the polishing paste is diamond polishing paste with a partic...

Embodiment 2

[0036] The iron-based galvanizing layer or the coloring method of the color metallography of the galvanized layer provided by the embodiment of the present invention comprises the following steps:

[0037] Grinding: use 400#, 600#, 800# metallographic sandpaper to polish the iron-based galvanized (galvanized) sample in sequence, and ensure that the scratches on the surface of the sample only face one direction and are evenly distributed in each grinding process , and rinse with water, rotate the sample 90° before proceeding to the next grinding process;

[0038] Polishing: After the sample is polished, the iron-based galvanized (plated) galvanized sample is held on a polishing machine for polishing; before polishing, the polishing paste is applied to the polishing cloth and smoothed, and the hand is kept steady during the polishing process and water is continuously added; among them The polishing cloth is canvas, and the polishing paste is diamond polishing paste with a partic...

Embodiment 3

[0042] The iron-based galvanizing layer or the coloring method of the color metallography of the galvanized layer provided by the embodiment of the present invention comprises the following steps:

[0043] Grinding: use 400#, 600#, 800# metallographic sandpaper to polish the iron-based galvanized (galvanized) sample in sequence, and ensure that the scratches on the surface of the sample only face one direction and are evenly distributed in each grinding process , and rinse with water, rotate the sample 90° before proceeding to the next grinding process;

[0044] Polishing: After the sample has been polished, the iron-based galvanized (plated) galvanized sample is polished on a polishing machine; before polishing, the polishing paste is applied to the polishing cloth and smoothed, and the hand is kept steady during the polishing process and water is continuously added; The polishing cloth is canvas, and the polishing paste is diamond polishing paste with a particle size of W2.5...

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Abstract

The invention belongs to the technical field of preparation and display of metallographic samples, and discloses a coloring method of color metallograph of an iron-based zincizing or galvanizing layer. The coloring method comprises the steps of grinding, polishing, pre-etching, and coloring. According to the coloring method, the iron-based (zincizing) galvanizing layer is clear and complete in crystal boundary, and high in size display performance; a clear microscopic structure can be obtained without polarized light and sensitive hue, and different phases and distribution thereof can be obviously distinguished. The method is simple in steps, high in repeatability, good in coloring effect and high in stability; a sample can be prepared under room temperature, and the prepared sample can be stored under normal temperature for a long time.

Description

technical field [0001] The invention belongs to the technical field of metallographic sample preparation and display, and in particular relates to a coloring method of iron-based galvanized layer or galvanized layer colored metallographic. Background technique [0002] The internal microstructure of metal materials is directly and closely related to various properties of metal materials. It is the most convenient, fast and effective way to observe the microstructure of metal materials with a metallographic microscope. Metallographic refers to the chemical composition of metal or alloy and the physical and chemical state of various components inside the alloy. Through metallographic analysis, the performance of materials can be evaluated and predicted, and metallographic analysis can also be used to analyze the causes of material failure and destruction. [0003] At present, black and white metallography is the most widely used in the field of metallography, and black and wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/28G01N1/32
CPCC23F1/28G01N1/32
Inventor 李小波彭淀高海云王灿
Owner XIANGTAN UNIV
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