A metallographic method for displaying the three-dimensional structure of the silicon-rich phase in the aluminum-silicon coating

A three-dimensional structure, aluminum-silicon technology, which is applied in the field of displaying the three-dimensional structure of the silicon-rich phase in the aluminum-silicon coating by the metallographic method, can solve the problems of the phase structure of the aluminum-coated silicon coating remaining, and no three-dimensional phase structure is found, and achieve low detection costs Effect

Active Publication Date: 2022-08-09
TANGSHAN IRON & STEEL GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the phase structure of aluminum-silicon coating mainly stays in the display of the phase structure of the plane and cross section, and no method for displaying the three-dimensional phase structure has been found.

Method used

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  • A metallographic method for displaying the three-dimensional structure of the silicon-rich phase in the aluminum-silicon coating
  • A metallographic method for displaying the three-dimensional structure of the silicon-rich phase in the aluminum-silicon coating
  • A metallographic method for displaying the three-dimensional structure of the silicon-rich phase in the aluminum-silicon coating

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Embodiment 1

[0029] A method for displaying the three-dimensional structure of a silicon-rich phase in an aluminum-silicon coating by a metallographic method, which comprises sample preparation, chemical corrosion, and microscope observation, specifically:

[0030] (1) Sample preparation: Take the aluminum-silicon coated steel plate (1500+AS grade), cut a 15mm×15mm sample, put the surface of the sample coating into the inlay machine horizontally for inlaying, and the surface of the inlaid sample coating is completely exposed. , and then polishing, specifically: spraying water and 2.5μm high-efficiency metallographic polishing agent on the 200mm pressure-sensitive adhesive woolen polishing cloth in turn, and then polishing for 30s at a polishing machine speed of 300 rpm.

[0031] (2) Chemical corrosion: Put the sample prepared in step (1) into the corrosion solution for chemical corrosion. The corrosion solution is composed of an aqueous solution of hydrochloric acid with a volume concentrat...

Embodiment 2

[0035] A method for displaying the three-dimensional structure of a silicon-rich phase in an aluminum-silicon coating by a metallographic method, which comprises sample preparation, chemical corrosion, and microscope observation, specifically:

[0036] (1) Sample preparation: Take the aluminum-silicon coated steel plate (DC52D+AS grade), cut a 20mm×20mm sample, put the surface of the sample coating into the inlay machine horizontally for inlaying, and the surface of the inlaid sample coating is completely exposed. , and then polishing, specifically: spraying water and 0.5μm high-efficiency metallographic polishing agent on the 250mm pressure-sensitive adhesive woolen polishing cloth in turn, and then polishing at 600 rpm for 20s.

[0037] (2) Chemical corrosion: Put the sample prepared in step (1) into the corrosion solution for chemical corrosion. The corrosion solution is composed of an aqueous solution of hydrochloric acid with a volume concentration of 12% and an aqueous so...

Embodiment 3

[0041] A method for displaying the three-dimensional structure of a silicon-rich phase in an aluminum-silicon coating by a metallographic method, which comprises sample preparation, chemical corrosion, and microscope observation, specifically:

[0042] (1) Sample preparation: Take the aluminum-silicon coated steel plate (DC51D+AS grade), cut a 10mm×10mm sample, put the surface of the sample coating into the inlay machine horizontally for inlaying, and the surface of the inlaid sample coating is completely exposed. , and then polishing, specifically: spraying water and 1.5μm high-efficiency metallographic polishing agent on the 200mmmm pressure-sensitive adhesive woolen polishing cloth in turn, and then polishing at 450 rpm for 25s.

[0043] (2) Chemical corrosion: Put the sample prepared in step (1) into the corrosion solution for chemical corrosion. The corrosion solution is composed of an aqueous solution of hydrochloric acid with a volume concentration of 11% and an aqueous ...

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Abstract

The invention belongs to the technical field of metal coating detection, and provides a method for displaying the three-dimensional structure of a silicon-rich phase in an aluminum-silicon coating by a metallographic method, including sample preparation, chemical corrosion and microscope observation. Coated steel plate, cut a part of it as a sample, and then inlaid and polished the sample in turn; (2) Chemical corrosion: put the sample prepared in step (1) into a corrosion solution for chemical corrosion, and the corrosion solution is made of an aqueous hydrochloric acid solution. (3) Microscope observation: After the chemical corrosion is completed, rinse the sample, dry it, and observe it with a ZISS metallographic microscope. The method provided by the invention can obtain a complete and clear three-dimensional structure of the silicon-rich phase, can fully display the growth of the silicon-rich phase, and has the characteristics of low detection cost, rapidity and simplicity.

Description

technical field [0001] The invention belongs to the technical field of metal coating detection, and in particular relates to a method for displaying the three-dimensional structure of a silicon-rich phase in an aluminum-silicon coating by a metallographic method. Background technique [0002] Due to the good anti-oxidation and anti-corrosion properties of aluminum-silicon-coated steel sheets, the research and development and application of its products are becoming more and more extensive, and the requirements for its physical properties are also increasing. At present, the research on the phase structure of aluminized silicon coating mainly stays on the display of the phase structure of the plane and cross-section, and no method for displaying the three-dimensional phase structure has been found. Studying the three-dimensional morphology of the phase structure can better study the growth of the phase, and can also directly reflect its production process. [0003] The metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/32G01N21/84
CPCG01N1/32G01N21/84
Inventor 魏焕君邝霜何先勇赵江林贾慧淑孙晓梅崔丽丽唐学斌尹芳
Owner TANGSHAN IRON & STEEL GROUP
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