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Metallographic corrosion solution and use method thereof

A technology of corrosion solution and concentrated hydrochloric acid, which is applied in the field of metallographic corrosion solution of C276 corrosion-resistant alloy, can solve the problems of difficult control of electrolytic corrosion, failure to obtain good metallographic corrosion effect, difficulty in finding rules, etc., and achieve clear grain boundaries Effect

Inactive Publication Date: 2018-06-29
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After a week of continuous testing, it was found that electrolytic corrosion is difficult to control and find a pattern, and a week of continuous testing did not achieve a good metallographic corrosion effect, so it is urgent to find a chemical corrosion solution for metallographic corrosion

Method used

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  • Metallographic corrosion solution and use method thereof
  • Metallographic corrosion solution and use method thereof
  • Metallographic corrosion solution and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation of corrosion solution: 2g ferric chloride, 1.45g barium chloride, 22ml glacial acetic acid, 74ml concentrated hydrochloric acid, 20ml concentrated nitric acid.

[0034] Use the prepared corrosive solution to corrode, put the sample in a glass dish, pour the prepared corrosive solution on the surface of the sample, let the corrosive solution soak the surface of the sample for about 2-5mm, and the corrosion time is about 10-5mm. After 30 minutes, it is observed that the surface of the sample is no longer bright, and when it becomes a pitted surface, the metallographic structure of the sample is completely corroded. Figure 1~2 It is a photomicrograph of the 1# sample after corrosion. The photo can corrode a clear C276 metallographic structure, making the twin structure clearly visible, and it is more convenient to measure the grain size. It provides a basis for customers to judge product quality, and enables manufacturers Benchmark products can be measured to ...

Embodiment 2

[0036] Preparation of corrosion solution: 2.2g ferric chloride, 1.5g barium chloride, glacial acetic acid 24ml, concentrated hydrochloric acid 72ml, concentrated nitric acid 23ml.

[0037] Figure 3-4 It is a photomicrograph of the 2# sample after corrosion. The photo can corrode a clear C276 metallographic structure, making the twin structure clearly visible, and it is more convenient to measure the grain size. It provides a basis for customers to judge product quality, and enables manufacturers Benchmark products can be measured to win the credit and satisfaction of customers, and at the same time improve the competitiveness of enterprises and bring objective economic benefits and benefits to enterprises.

Embodiment 3

[0039] Preparation of corrosion solution: 2.4g ferric chloride, 1.2g barium chloride, 20ml glacial acetic acid, 75ml concentrated hydrochloric acid, 20ml concentrated nitric acid.

[0040] Figure 5 It is a photomicrograph of the 3# sample after corrosion. The photo can corrode a clear C276 metallographic structure, making the twin structure clearly visible, and it is more convenient to measure the grain size. It provides a basis for customers to judge product quality, and enables manufacturers Benchmark products can be measured to win the credit and satisfaction of customers, and at the same time improve the competitiveness of enterprises and bring objective economic benefits and benefits to enterprises.

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Abstract

The invention provides a metallographic corrosion solution and a use method thereof, relates to a corrosion solution for metallographic analysis, and particularly relates to a metallographic corrosionsolution of a C276 corrosion resistant alloy and a use method thereof. The metallographic corrosion solution is characterized by comprising the following components in parts by weight: 2-2.5g of ferric trichloride, 1.0-1.5g of barium chloride, 20-25ml of glacial acetic acid, 70-75ml of concentrated hydrochloric acid, and 20-25ml of concentrated nitric acid. The metallographic corrosion solution is applicable to metallographic corrosion of a C276 corrosion resistant alloy board and capable of clearly showing a metallographic structure of a C276 corrosion resistant alloy sample, and thus clearphase boundary and grain boundary can be realized; the particle size can be conveniently determined and the structure in crystal grains can be conveniently observed during scientific research and production, thus the technical parameters of each process can be adjusted, and the foundation is provided to determine the product quality.

Description

technical field [0001] A metallographic corrosion solution and a use method thereof, relating to a metallographic analysis corrosion solution, in particular a metallographic corrosion solution of a C276 corrosion-resistant alloy and a use method thereof. Background technique [0002] Metallographic analysis is one of the main methods to study the internal structure and defects of metals and alloys, and occupies an important position in the field of metal material research. Use a metallographic microscope to zoom in on the surface of specially prepared samples, identify and analyze the internal structure of metals and alloys, and study the relationship between the internal structure of metals and alloys and their chemical composition; determine the metals and alloys after different processing and heat treatment Microstructure; determine whether the quality of the material is qualified, etc. To do a good job in metallographic analysis, the sample must first be metallographi...

Claims

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Application Information

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IPC IPC(8): C23F1/28G01N1/32
CPCC23F1/28G01N1/32
Inventor 杨志强陈琴刘广龙赵祥麟南宏强任达进常耀威段国武
Owner JINCHUAN GROUP LIMITED
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