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Surface bright anodic oxidation coloring method of titanium and titanium alloy

An anodic oxidation and titanium alloy technology, applied in the field of titanium and titanium alloys, can solve problems such as high cost, long process route, and complicated process steps, and achieve high surface hardness, simplified process, and good biocompatibility

Active Publication Date: 2017-11-14
TRAUSON CHINA MEDICAL INSTR COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent application has the characteristics of high surface hardness, good bonding force and corrosion resistance, bright color, uniform and no variegated color, and good decorative effect of the colored anodized film. However, the process steps are still relatively complicated and the process route is relatively long. The specific production The cost is also higher

Method used

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  • Surface bright anodic oxidation coloring method of titanium and titanium alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] First, ultrasonically clean in Micro-90 cleaning solution for 10 minutes, and the temperature of ultrasonic cleaning is 70°C. Then hang the degreased and cleaned miniature bone plate (TA3) on a special hanger as the anode, stainless steel as the cathode, at a temperature of 15°C and a current density of 10A dm -2 1. Anodize and color in an anodizing solution with a voltage of 30V for 1min, then rinse with purified water and dry with an air gun to obtain a colored surface oxide film. The anodic oxidation solution consists of: 20g L -1 Sodium ammonium hydrogen phosphate, 5mL·L -1 Phosphoric acid, 5g·L -1 ammonium fluoride.

Embodiment 2

[0031] First, ultrasonically clean in Micro-90 cleaning solution for 10 minutes, and the temperature of ultrasonic cleaning is 80°C. Then hang the degreased and cleaned miniature bone plate (TA3) on a special hanger as the anode, and stainless steel as the cathode. -2 1. Anodizing and coloring in an anodizing solution with a voltage of 50V for 5 minutes, then rinsed with purified water and dried with an air gun to obtain a colored surface oxide film. The anodic oxidation solution consists of: 50g L -1 Sodium ammonium hydrogen phosphate, 10mL·L -1 Phosphoric acid, 10g·L -1 ammonium fluoride.

Embodiment 3

[0033] First, ultrasonically clean in Micro-90 cleaning solution for 10 minutes, and the temperature of ultrasonic cleaning is 75°C. Then hang the degreased and cleaned locking screw (TC4) on a special hanger as the anode, and stainless steel as the cathode, at a temperature of 25°C and a current density of 8A·dm -2 1. Anodizing and coloring in an anodizing solution with a voltage of 50V for 7 minutes, then rinsed with purified water and dried with an air gun to obtain a colored surface oxide film. The anodic oxidation solution consists of: 100g L -1 Sodium ammonium hydrogen phosphate, 20mL·L -1 Phosphoric acid, 20g·L -1 ammonium fluoride.

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Abstract

The invention relates to the field of titanium and titanium alloys and in particular to a surface bright anodic oxidation coloring method for titanium and titanium alloy. The surface bright anodic oxidation coloring method comprises the following steps: (1) ultrasonically cleaning the titanium and the titanium alloy in a Micro-90 cleaning solution; (2) clamping the cleaned titanium and titanium alloy on a special hanger, and putting the hanger into an anodic oxidation coloring solution to oxidize; (3) flushing the titanium and the titanium alloy subjected to the anodic oxidation coloring with purified water; and (4) drying the flushed titanium and titanium alloy by blowing, and then, putting the dried titanium and titanium alloy into a clean circulation box for being circulated. According to the surface bright anodic oxidation coloring method for titanium and titanium alloy, the product dimension is not required to remove, and the process of pickling or electrochemically polishing before original anodic oxidation treatment is innovated, the cleaned product is directly subjected to the anodic oxidation treatment, and the anodic oxidation treatment process is greatly simplified.

Description

technical field [0001] The invention relates to the field of titanium and titanium alloys, in particular to a bright anodic oxidation coloring method for the surface of titanium and titanium alloys. Background technique [0002] Because titanium and titanium alloys have good mechanical properties, excellent corrosion resistance, light weight and good biocompatibility, in view of the above advantages of titanium and titanium alloys, in recent years, titanium and titanium alloys have been widely used in various fields. application. For example, in aerospace, titanium alloys are used in the production of new-generation aircraft due to their small specific gravity, light weight, and high strength; in medicine, titanium and titanium alloys have high mechanical properties, good corrosion resistance, and biological inertness. Therefore, designers of medical engineering technology, medical equipment and doctors of various professions attach great importance to this new structural m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
Inventor 陈晓明宋志伟董乃光王爱国
Owner TRAUSON CHINA MEDICAL INSTR COMPANY
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