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A kind of electrolytic polishing liquid and electrolytic polishing process for titanium and titanium alloy

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

Inactive Publication Date: 2016-01-27
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] 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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  • A kind of electrolytic polishing liquid and electrolytic polishing process for titanium and titanium alloy
  • A kind of electrolytic polishing liquid and electrolytic polishing process for titanium and titanium alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1, a kind of electrolytic polishing process that is used for titanium and titanium alloy EBSD sample, comprises the steps:

[0027] (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 sequence, clean the surface and dry it;

[0028] (2) Prepare electrolytic polishing liquid: prepare according to formula 1 in the above table;

[0029] (3) Take the polished Ti-3Al-4Cr-2Fe titanium alloy sample as an anode, connect it to the positive pole of a DC power supply and immerse it in the electrolytic cell filled with the electrolytic polishing solution prepared in step (2);

[0030] (4) With the stainless steel sheet as the cathode, connect to the negative pole of the DC stabilized power supply and immerse in the electrolytic cell filled with the above-mentioned electrolytic polishing solution;

[0031] (5) Polishing is carried out in above-mentioned electrolytic ...

Embodiment 2

[0034] Embodiment 2: a kind of electrolytic polishing process that is used for titanium and titanium alloy EBSD sample, comprises the steps:

[0035] (1) sample grinding: with embodiment 1;

[0036] (2) Prepare electrolytic polishing liquid: prepare according to formula 2 in the above table;

[0037] (3) With the polished TC4 titanium alloy sample as the anode, it is connected to the positive pole of the DC power supply and immersed in an electrolytic cell filled with electrolytic polishing solution;

[0038] (4) With the stainless steel sheet as the cathode, it is connected to the negative pole of the DC stabilized power supply and immersed in an electrolytic cell filled with electrolytic polishing solution;

[0039] (5) Polishing is carried out in the above-mentioned electrolyte solution, and 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.

[0040] (6) Take...

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Abstract

The invention discloses an electrolytic polishing solution for titanium and titanium alloys and an electrolytic polishing process. The polishing solution is prepared from perchloric acid with a volume fraction of 8-15% and acetic acid with a volume fraction of 85-92%. The polishing solution is convenient to obtain materials, easy to prepare and store, simple polishing equipment, easy to operate, can greatly reduce the stress on the surface of the sample, and at the same time the surface is smooth and flat, without obvious scratches and oxide films, and the recognition rate of EBSD patterns is high. Improve detection accuracy.

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. technical background [0002] Since the 1990s, the analysis technology of electron backscattering patterns (EBSP for short) crystal micro-region orientation and crystal structure assembled on SEM has made great progress, and has been applied in the microstructure of materials and microweave. Widely used in structural representation. This technique is also known as electron backscattered diffraction (Electron Backscattered Diffraction, referred to as EBSD). 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 o...

Claims

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Application Information

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Patent Type & Authority Patents(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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