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Method for observing Al5FeSi phase in aluminum-silicon coating original plate alloy layer

An alloy layer and coating technology is applied in the field of observation of the Al5FeSi phase in the alloy layer of the aluminum-silicon coating original plate, which can solve the problem of high cost and achieve the effect of low detection cost.

Active Publication Date: 2021-10-22
TANGSHAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the composition of the phases is generally determined by XRD, which is expensive, so a simple and practical method for displaying and observing the phases in the Al-Si coating alloy layer is urgently needed

Method used

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  • Method for observing Al5FeSi phase in aluminum-silicon coating original plate alloy layer
  • Method for observing Al5FeSi phase in aluminum-silicon coating original plate alloy layer
  • Method for observing Al5FeSi phase in aluminum-silicon coating original plate alloy layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Al in a kind of aluminum-silicon coating raw plate alloy layer 5 The observation method of FeSi phase includes sample preparation, chemical corrosion, cleaning, scanning electron microscope observation and energy spectrometer measurement, specifically:

[0054] (1) Sample preparation: Take an aluminum-silicon coated steel plate (1500+AS grade), cut a sample of 15mm×15mm, put the sample coating surface horizontally into the mounting machine for mounting, and the mounting surface of the sample coating is completely exposed , and then perform polishing treatment, specifically: spray water and 2.5 μm high-efficiency metallographic polishing agent evenly on a 200mm pressure-sensitive vinyl polishing cloth in sequence, and then polish for 15s at a polishing machine speed of 600 rpm.

[0055] (2) Chemical corrosion: Put the sample prepared in step (1) into the corrosion solution for chemical corrosion. The corrosion solution consists of 0.03g / ml stannous chloride aqueous solut...

Embodiment 2

[0060] Al in a kind of aluminum-silicon coating raw plate alloy layer 5 The observation method of FeSi phase includes sample preparation, chemical corrosion, cleaning, scanning electron microscope observation and energy spectrometer measurement, specifically:

[0061] (1) Sample preparation: Take an aluminum-silicon coated steel plate (DC52D+AS grade), cut a 20mm×20mm sample, put the sample coating surface horizontally into the mounting machine for mounting, and the mounting surface of the sample coating is completely exposed , and then perform polishing treatment, specifically: spray water and 0.5 μm high-efficiency metallographic polishing agent evenly on a 250mm pressure-sensitive vinyl polishing cloth in sequence, and then polish for 20s at a polishing machine speed of 600 rpm.

[0062] (2) Chemical corrosion: Put the sample prepared in step (1) into the corrosion solution for chemical corrosion. The corrosion solution consists of 0.02g / ml stannous chloride aqueous solutio...

Embodiment 3

[0067] Al in a kind of aluminum-silicon coating raw plate alloy layer 5 The observation method of FeSi phase includes sample preparation, chemical corrosion, cleaning, scanning electron microscope observation and energy spectrometer measurement, specifically:

[0068] (1) Sample preparation: Take an aluminum-silicon coated steel plate (DC51D+AS grade), cut a 10mm×10mm sample, put the sample coating surface horizontally into the mounting machine for mounting, and the mounting surface of the sample coating is completely exposed , and then perform polishing treatment, specifically: spray water and 1.5 μm high-efficiency metallographic polishing agent evenly on the 200mmmm pressure-sensitive vinyl polishing cloth in sequence, and then polish for 15s at the speed of the polishing machine at 900 rpm.

[0069] (2) Chemical corrosion: Put the sample prepared in step (1) into the corrosion solution for chemical corrosion. The corrosion solution consists of 0.05g / ml stannous chloride aq...

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Abstract

The invention provides a method for observing an Al5FeSi phase in an aluminum-silicon coating original plate alloy layer. The method specifically comprises the following steps: (1) preparing a sample; (2) chemical corrosion: putting the sample prepared in the step (1) into a corrosive liquid for chemical corrosion, wherein the corrosive liquid is prepared from a stannous chloride aqueous solution, a hydrochloric acid aqueous solution and a sodium chloride aqueous solution; (3) cleaning; and (4) observation by a scanning electron microscope and determination by a thermoelectric energy spectrometer: observing the morphology, size and distribution of the Al5FeSi phase by using the scanning electron microscope, and determining the atomic ratio of each element of the Al5FeSi phase by using the thermoelectric energy spectrometer. According to the method provided by the invention, a complete and clear three-dimensional structure of the Al5FeSi phase can be obtained, the morphology, the size distribution and the growth condition of the Al5FeSi phase in the alloy layer of the aluminum-silicon coating original plate can be fully displayed, the atomic ratio of each element in the Al5FeSi phase can be accurately determined, and the method has the characteristics of low detection cost, rapidness, simplicity and accuracy.

Description

technical field [0001] The invention belongs to the technical field of metal coating detection, and in particular relates to an Al 5 Observation method of FeSi phase. 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 their products are becoming more and more extensive, and the requirements for their physical properties are also increasing. [0003] At present, the research on the phase structure of aluminum-silicon coating mainly focuses on the phase structure of the aluminum-silicon layer, and there are few studies on the phase structure, morphology and proportion of each phase in the alloy layer. [0004] Study the phase structure of alloy layers, including Al 5 The three-dimensional morphology and phase composition of FeSi phase are of great significance to guide process improvement and improve product quality. Because when the steel plate i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/2251G01N23/2202G01N23/22
CPCG01N23/2251G01N23/2202G01N23/22
Inventor 魏焕君邝霜田秀刚何先勇赵江林李海滨崔丽丽唐学斌尹芳
Owner TANGSHAN IRON & STEEL GROUP
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