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Device for electrolytic etching and method for extracting metal compound particles

A metal compound, electrolytic etching technique used in materials analysis using wave/particle radiation, electrolytic components, electrolytic processes, etc.

Active Publication Date: 2021-07-27
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] Therefore, in the case of residue recovery for the identification-quantitative analysis of inclusions and precipitated phases, the main focus is on enabling the Fe component to maintain a dissolved state in the electrolyte in the form of a chelate, and regarding the electrolytic operation Inclusions and contamination of precipitated phases, etc., have not been given special consideration

Method used

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  • Device for electrolytic etching and method for extracting metal compound particles
  • Device for electrolytic etching and method for extracting metal compound particles
  • Device for electrolytic etching and method for extracting metal compound particles

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Embodiment

[0157] The present invention will be described below through examples. However, the present invention should not be limited to the following examples and interpreted.

[0158] Quantitative analysis of inclusions or precipitates in steel samples was carried out by electrolysis using the apparatus for electrolytic etching of the present invention. As a comparative example, a comparative example in which electrolysis was performed using a conventional electrolytic solution was prepared.

[0159] In this example, as a steel sample, a steel material containing 0.4% by mass of Cu was heat-treated at 1350° C. for 30 min for solid solution, and then rapidly cooled in water.

[0160] The following two types of electrolyte solutions were prepared.

[0161] (1) 4% MS: It has been known for a long time that sulfide-based inclusions can be recovered as a residue, and contains 4% by mass of methyl salicylate + 1% by mass of salicylic acid + 1% by mass of tetramethyl chloride Triammonium ...

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Abstract

The object of the present invention is to suppress the loss of metal particles (inclusions, precipitates) in metal materials without making major changes to the previous extraction and analysis methods in the extraction and analysis of metal particles (inclusions, precipitates) using the electrolytic corrosion method in a solvent-based electrolyte solution. The surface replacement of metal particles caused by Cu ions, etc., thereby preventing the generation of Artifact (simulated) CuS, etc.; and actively attaching the precipitated metal to the cathode, so that the metal precipitated on the cathode will not become a pollution source. The present invention relates to an electrolytic etching device and an extraction method. The electrolytic etching device separates and extracts metal compound particles in a metal material; A member composed of the above metal M'; and an electrolytic tank for accommodating an electrolytic solution containing a medicament and a non-aqueous solvent for forming a complex containing the metal M'; Δ=pK sp [M' x' A y' ] - pK sp [M x A y ]=(-log 10 K sp [M' x' A y' ])-(-log 10 K sp [M x A y ]).

Description

technical field [0001] The present invention relates to an electrolytic etching device for separating and extracting metal compound particles in a metal material, and having a member made of a specific metal in at least a part of the cathode. Background technique [0002] In metal materials, especially iron and steel materials, it is widely implemented to control the types of inclusions and precipitates in the material matrix, the shape and size of the aspect ratio, etc., by adding trace elements and various heat treatments. The required strength and properties of the material are controlled. [0003] Therefore, the observation of inclusions and / or precipitates, and the determination of their composition and content are of great significance in the quality management of steel materials and the analysis of manufacturing processes. [0004] In order to observe inclusions and precipitated phases using SEM, etc., it is necessary to expose the inclusions and precipitated phases ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/32C25F3/02G01N23/20091G01N23/2251
CPCC25F3/02G01N1/32C25F3/06G01N33/2028G01N1/40G01N2001/4038C25F7/00
Inventor 水上和实
Owner NIPPON STEEL CORP
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