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A method for coloring titanium or titanium alloy by discharge oxidation

A discharge oxidation and titanium alloy technology, applied in the field of titanium or titanium alloy electroplating coloring, titanium or titanium alloy discharge oxidation coloring, can solve the problems of large environmental pollution, limited color change, no color and voltage, etc.

Inactive Publication Date: 2015-10-28
卢永凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The existing anodic oxidation and coloring of titanium all use strong acid system electrolyte, which is very polluting to the environment; the color change is very limited, and there is no corresponding color and voltage

Method used

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  • A method for coloring titanium or titanium alloy by discharge oxidation
  • A method for coloring titanium or titanium alloy by discharge oxidation
  • A method for coloring titanium or titanium alloy by discharge oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Discharge oxidation under the acid saturated potassium chloride aqueous solution of embodiment 1 formula (one)

[0085] Using distilled water as a solvent and taking the total volume of the electrolyte as 100ml, according to the following formula, the solute is completely dissolved in the solvent to prepare 2 parts of the same electrolyte, and the ion concentration of the electrolyte is about 4.8mol / L. Do AdobeRGB value test and Lab value test respectively:

[0086]

[0087] Under 1.5 atmospheric pressure and 80°C temperature, use a 50HZ DC pulse power supply, use graphite as the negative electrode, put a titanium alloy sheet with a purity of 98%, vanadium and nickel as other alloying elements, and a surface roughness of 5Ra into the electrolyte, adjust Voltage, treatment for 25 seconds; after the discharge oxidation reaction is stable, record the color change of the titanium sheet every 5V from 5V-80V, and record the corresponding AdobeRGB value and Lab value. The...

Embodiment 2

[0091] Discharge oxidation under the 150g / 100ml ammonium nitrate aqueous solution of embodiment 2 formula (four)

[0092] Using distilled water as a solvent and taking the total volume of the electrolyte as 100ml, according to the following formula, the solute was completely dissolved in the solvent to prepare 2 parts of the same electrolyte, and the ion concentration of the electrolyte was 18.75mol / L. Do AdobeRGB value test and Lab value test respectively:

[0093]

[0094]

[0095] Under 1 atmospheric pressure and 30°C temperature, use 40-60HZ DC pulse power supply, use pure titanium sheet as the negative electrode, put the titanium alloy sheet with a purity of 92%, other alloying elements including nickel and molybdenum, and a surface roughness of 5Ra into the In the electrolyte, adjust the voltage and treat for 20 seconds; after the discharge oxidation reaction is stable, record the color change of the titanium sheet every 5V from 5V-45V, and record the correspondi...

Embodiment 3

[0100] Discharge oxidation under the low ion concentration aqueous solution of embodiment 3 formula (five)

[0101] Using distilled water as a solvent and taking the total volume of the electrolyte as 100ml, according to the following formula, the solute is completely dissolved in the solvent to prepare 2 parts of the same electrolyte, and the ion concentration of the electrolyte is about 0.1mol / L. Do AdobeRGB value test and Lab value test respectively:

[0102]

[0103] The pressure around the electrolyte is constant and not higher than 1 atmospheric pressure, and at a temperature of 85°C, use a 50-60HZ DC pulse power supply. The negative electrode is made of pure zinc sheet with a purity of 98%, other alloying elements are vanadium and nickel, and the surface roughness is 3Ra. Put the titanium alloy sheet into the electrolyte, adjust the voltage, and treat it for 45 seconds; after the discharge oxidation reaction is stable, record the color change of the titanium sheet ...

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Abstract

The present invention provides a discharging oxidation coloring method for titanium or a titanium alloy. The method comprises: placing titanium or a titanium alloy in an electrolyte of an electrolyte tank, and adopting discharging oxidation to carry out coloring, wherein a power supply is one selected from an alternating current power supply with a frequency of 45-60 Hz, a direct current pulse power supply, or a smooth direct current power supply, a temperature of the electrolyte is -20 to 120 DEG C, ambient pressure is 0.8-1.6 standard atmospheric pressure, a voltage is higher than 0 V and does not exceed 260 V, iron concentration of the electrolyte is 0.03-12 mol / L, an electrode plate material is at least one selected from a transition metal, stainless steel and graphite, and titanium weight content in the titanium alloy is more than 90%. According to the present invention, under conditions of low temperature, low voltage, and low pressure, discharging oxidation is performed on the titanium or the titanium alloy. With the present invention, problems of high temperature, high pressure and environmental pollution during discharging oxidation coloring of the titanium in the prior art are solved, traditional colors are broken through, and the method is suitable for coloring of titanium or titanium alloys in jewelry and related fields.

Description

technical field [0001] The invention relates to the field of electroplating and coloring of titanium or titanium alloys, and furthermore relates to the field of discharge oxidation coloring of titanium or titanium alloys, especially the discharge oxidation coloring method of titanium or titanium alloys used in jewelry industry. Background technique [0002] At present, there is no content about titanium discharge oxidation coloring in the published patent documents, and there are not many researches on this aspect in the academic circle. [0003] As we all know, titanium is a pure metal. When any substance comes into contact with titanium, it will not produce a chemical reaction, and its stability is high, so that it will not affect its essence after long-term contact with the human body, so it will not cause human allergies. Pure titanium jewelry is the best choice for people with skin allergies. It is the only metal that has no effect on human autonomic nerves and taste, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
Inventor 龚太可欣
Owner 卢永凯
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