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Electrolytic polishing solution for titanium and titanium alloys and electrolytic polishing process

An electrolytic polishing and titanium alloy technology, applied in the field of metal surface treatment, can solve the problems of difficult preparation, poor polishing process stability, complex components, etc., and achieve the effects of simple production, easy preparation and storage, and simple equipment

Inactive Publication Date: 2013-01-30
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention solves the problems that titanium and titanium alloy electrolytic polishing solutions have complex components, are difficult to prepare and have poor polishing process stability, and provide an electrolytic polishing solution for preparing titanium and titanium alloy EBSD samples. Polishing fluid

Method used

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  • Electrolytic polishing solution for titanium and titanium alloys and electrolytic polishing process
  • Electrolytic polishing solution for titanium and titanium alloys and electrolytic polishing process

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1, a kind of electrolytic polishing process that is used for titanium and titanium alloy EBSD sample, comprises the steps:

[0031] (1) Grinding of the sample: use 400 mesh, 600 mesh, 800 mesh, 1500 mesh and 2000 mesh metallographic sandpaper to polish the Ti-3Al-4Cr-2Fe titanium alloy in turn, clean the surface and dry it;

[0032] (2) Prepare electrolytic polishing solution: prepare according to formula 1 in the above table;

[0033] (3) Take the polished Ti-3Al-4Cr-2Fe titanium alloy sample as the anode, connect it to the positive pole of the DC power supply and immerse it in the electrolytic cell filled with the electrolytic polishing solution prepared in step (2);

[0034] (4) Take the stainless steel sheet as the cathode, connect it to the negative pole of the DC power supply and immerse it in the electrolytic tank filled with the above-mentioned electrolytic polishing solution;

[0035] (5) Polishing in the above electrolyte, the polishing temperatu...

Embodiment 2

[0038] Embodiment 2: a kind of electrolytic polishing process that is used for titanium and titanium alloy EBSD sample, comprises the steps:

[0039] (1) Sample grinding: same as Example 1;

[0040] (2) Prepare electrolytic polishing solution: prepare according to formula 2 in the above table;

[0041] (3) Take the polished TC4 titanium alloy sample as the anode, connect it to the positive pole of the DC stabilized voltage power supply and immerse it in the electrolytic cell filled with the electrolytic polishing solution;

[0042] (4) Take the stainless steel sheet as the cathode, connect it to the negative pole of the DC stabilized power supply and immerse it in the electrolytic tank filled with electrolytic polishing solution;

[0043] (5) Polish in the above electrolyte, the polishing temperature is below zero 5-10°C, the polishing time is 35s, the polishing voltage is 60V, and the distance between the anode and the cathode is 60mm.

[0044] (6) Take out the polished sa...

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Abstract

The invention discloses electrolytic polishing solution for titanium and titanium alloys and an electrolytic polishing process, wherein the polishing solution is prepared by perchloric acid with volume fraction of 8-15% and acetic acid with volume fraction of 85-92%. The polishing solution is convenient in material selection, easy in preparation and storage, simple in polishing process equipment, easy in operation, smooth in surface, free of obvious scratches and oxide films and high in EBSD (Electron Back-Scattered Diffraction) pattern recognition rate, and has the effects of greatly reducing the superficial stress of the samples and greatly improving the detection precision.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to an electrolytic polishing solution and an electrolytic polishing process for preparing titanium and titanium alloy electron backscatter diffraction (EBSD) samples. [0002] technical background [0003] Since the 1990s, the analysis technology of Electron Back-scattering Patterns (EBSP) crystal micro-domain orientation and crystal structure assembled on SEM has made great progress, and has been studied in the microstructure and structure of materials. Widely used in microtexture characterization. This technique is also called Electron Backscattered Diffraction (EBSD for short). The main feature of EBSD is sub-micron diffraction with spatial resolution (given crystallographic data) while retaining the conventional features of scanning electron microscopy. At present, EBSD technology has been able to realize the automatic collection of micro-region orientation information,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F3/26G01N1/32
Inventor 张丁非胡光山郭星星耿青梅齐福刚柴森森董井忍谌夏
Owner CHONGQING UNIV
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