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Amorphous alloy metallic phase corrosive agent and metallic phase display method

A technology of amorphous alloy and corrosive agent, which is applied in the direction of instruments, analytical materials, measuring devices, etc., can solve the problems of corroding the crystalline phase of amorphous alloy and the inconvenient observation of the crystalline phase

Active Publication Date: 2009-11-11
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a metallographic etchant that can overcome the metallographic etchant in the prior art, is easy to corrode the crystallization phase of the amorphous alloy, and is easy to form a contamination layer on the sample surface, thereby causing the crystallization phase to be inconvenient to observe the shortcoming of the metallographic etchant, And a metallographic display method using the metallographic etchant

Method used

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  • Amorphous alloy metallic phase corrosive agent and metallic phase display method
  • Amorphous alloy metallic phase corrosive agent and metallic phase display method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] [Sample] Zr 41 Ti 14 Cu 12.5 Ni 10 be 22.5 Amorphous Alloy (U.S. Liquid Metal Technology Company)

[0024] [Formulation and process parameters]

[0025] Nitric acid content 1mol / L

[0026] Hydrochloric acid content 1.5mol / L

[0027] Sodium metabisulfite content 0.6mol / L

[0028] the rest is water

[0029] Make metallographic etchant X by above-mentioned proportioning

[0030] Corrosion time 4 minutes

[0031] temperature room temperature

[0032] [Procedures and Conditions]

[0033] Mechanical polishing→water washing→ultrasonic degreasing→water washing→electrodegreasing→water washing→drying→metallographic corrosion→cleaning (absolute ethanol)→drying

[0034] Wherein, the specific conditions of each processing step are as follows:

[0035] Mechanical polishing: yellow medium-coarse polishing paste (SBT-600 model) and white fine polishing paste (SBW-804 model) produced by Jiangmen Jielixin Polishing Materials Co., Ltd.; polishing machine produced by Dongguan ...

Embodiment 2

[0040] [sample] with embodiment 1

[0041] [processing procedure] is the same as embodiment 1

[0042] [composition and treatment condition of treatment solution] corresponding treatment solution and treatment condition are with embodiment 1,

[0043] The difference is that the metallographic etchant of the following formula is used in the metallographic corrosion process.

[0044] Nitric acid content 5mol / L

[0045] Hydrochloric acid content 0.5mol / L

[0046] Sodium metabisulfite content 0.1mol / L

[0047] the rest is water

[0048] Corrosion time 2 minutes

[0049] temperature room temperature

[0050][metallographic sample preparation] under the same preparation conditions as in Example 1, sample A2 was obtained

Embodiment 3

[0052] [Sample] Same as Example 1

[0053] [processing procedure] is the same as embodiment 1

[0054] [Composition and treatment conditions of the treatment solution] The difference from Example 1 is that the metallographic etchant of the following formula is used in the metallographic corrosion process.

[0055] [Formulation and process parameters]

[0056] Nitric acid content 2.5mol / L

[0057] Hydrochloric acid content 1mol / L

[0058] Sodium metabisulfite content 0.4mol / L

[0059] the rest is water

[0060] Corrosion time 3 minutes

[0061] temperature room temperature

[0062] [metallographic sample preparation] sample A3 is obtained under the same preparation conditions as in Example 1

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Abstract

The invention provides an amorphous alloy metallic phase corrosive agent which comprises nitric acid, hydrochloric acid, lopsided sulphite and water. The metallic phase corrosive agent cannot form a pollution layer on the surface of an amorphous alloy sample and overmuch corrode a crystalline phase in amorphous alloy and is beneficial to observing the crystalline phase of the amorphous alloy so as to evaluate the quality of the amorphous alloy.

Description

technical field [0001] The invention relates to an amorphous alloy metallographic corrosion agent and a metallographic structure display method. Background technique [0002] Amorphous alloys refer to metals whose atoms are arranged in three-dimensional space without long-range order. Because it has some structural characteristics similar to glass, it is also called metallic glass. In 1960, Professor Duwer and others in the United States first prepared Au-Si amorphous alloys by melt quenching method. For more than 40 years, various amorphous soft magnetic alloys represented by Fe-based Ni-based Zr-based alloys have In many aspects, it has better magnetic and mechanical properties than conventional commercial crystalline alloys, and has been applied in electric power, electronics, information and other technologies. At present, zirconium used as a raw material for amorphous alloys is required to have relatively high purity, so that the amorphous alloys have good formability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/32G01N21/84C23F1/26C23F1/16
Inventor 姜琳莉
Owner BYD CO LTD
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