Anodic oxidation coloring method free of introducing of elements inconsistent with titanium and titanium alloy base materials

An anodic oxidation and titanium alloy technology, applied in the field of titanium and titanium alloys, can solve the problems of complex process steps, long process routes, and high costs, and achieve the effect of fewer process steps, guaranteed consistency, and low cost

Active Publication Date: 2016-03-30
CHANGZHOU ORTHMED MEDICAL INSTR
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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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  • Anodic oxidation coloring method free of introducing of elements inconsistent with titanium and titanium alloy base materials
  • Anodic oxidation coloring method free of introducing of elements inconsistent with titanium and titanium alloy base materials
  • Anodic oxidation coloring method free of introducing of elements inconsistent with titanium and titanium alloy base materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] First, ultrasonically clean in Micro-90 cleaning solution for 10 minutes, and the temperature of ultrasonic cleaning is 70°C. Put the degreased and cleaned miniature bone plate into the pickling solution for 0.5min corrosion at room temperature, and then rinse it with purified water. Hang the cleaned micro-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. Anodizing and coloring in an anodizing solution with a voltage of 35V for 2 minutes, then rinsed with purified water and dried with an air gun to obtain a colored surface oxide film.

[0038] The pickling solution consists of: 30mL·L -1 hydrofluoric acid, 50mL·L -1 of nitric acid and 50mL·L -1 of hydrogen peroxide.

[0039] The anodic oxidation solution consists of: 50g L -1 tartaric acid, 5mL·L -1 Hydrogen peroxide, 5mL·L -1 of glycerol and 5mL·L -1 of lactic acid.

Embodiment 2

[0041] First, ultrasonically clean in Micro-90 cleaning solution for 10 minutes, and the temperature of ultrasonic cleaning is 75°C. Put the degreased and cleaned miniature bone plate into the acid pickling solution for corrosion for 1 min at room temperature, and then rinse it with purified water. Hang the cleaned miniature bone plate (TA3) on a special hanger as the anode, and stainless steel as the cathode, at a temperature of 20°C and a current density of 5A·dm -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.

[0042] The pickling solution consists of: 50mL·L -1 hydrofluoric acid, 100mL·L -1of nitric acid and 100mL·L -1 of hydrogen peroxide.

[0043] The anodic oxidation solution consists of: 100g L -1 tartaric acid, 10mL·L -1 Hydrogen peroxide, 10mL·L -1 of glycerol and 10mL·L -1 of lactic acid.

Embodiment 3

[0045] First, ultrasonically clean in Micro-90 cleaning solution for 10 minutes, and the temperature of ultrasonic cleaning is 80°C. Put the degreased and cleaned locking screw (TC4) into the pickling solution for 1.5min corrosion at room temperature, and then rinse it with purified water. Hang the cleaned locking screw (TC4) on a special hanger as the anode, stainless steel as the cathode, at a temperature of 25°C and a current density of 7A·dm -2 1. Anodizing and coloring in an anodizing solution with a voltage of 75V for 7 minutes, then rinsed with purified water and dried with an air gun to obtain a colored surface oxide film.

[0046] The pickling solution consists of: 80mL L -1 hydrofluoric acid, 200mL·L -1 of nitric acid and 200mL·L -1 of hydrogen peroxide.

[0047] The anodic oxidation solution consists of: 150g L -1 tartaric acid, 20mL·L -1 Hydrogen peroxide, 20mL·L -1 of glycerol and 20mL·L -1 of lactic acid.

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Abstract

The invention relates to the field of titanium and titanium alloy, in particular to an anodic oxidation coloring method free of introducing of elements inconsistent with titanium and titanium alloy base materials. The method comprises the following steps that 1, titanium and titanium alloy are ultrasonically cleaned in a Micro-90 cleaning solution; 2, the cleaned titanium and titanium alloy are put in an acid pickling solution to be treated; 3, the titanium and titanium alloy are washed thoroughly with purified water; 4, the cleaned titanium and titanium alloy are clamped on a specific hanging tool, and the hanging tool is put in an anodic oxidation coloring solution to be oxidized; 5, the titanium and titanium alloy subjected to anodic oxidation coloring is washed thoroughly with purified water; and 6, the thoroughly washed titanium and titanium alloy are blow-dried and then put in a clean transfer box to be transferred. According to the anodic oxidation coloring method, the safety of implantation medical instruments is guaranteed to the largest extent, meanwhile, titanium and titanium alloy with various surface states are subjected to anodic oxidation treatment through an improved acid pickling technology, and color consistency is guaranteed.

Description

technical field [0001] The invention relates to the field of titanium and titanium alloys, in particular to an anodic oxidation coloring method that does not introduce elements inconsistent with titanium and titanium alloy substrates. Background technique [0002] Due to the high mechanical properties, good corrosion resistance and biological inertness of titanium and titanium alloys, designers of medical engineering technology, medical devices and doctors of various professions attach great importance to this new structural material, so Titanium alloys are widely used in dental and bone implants, as well as intravascular stents. [0003] However, titanium and titanium alloys also have their shortcomings, such as wear resistance, contact corrosion with other metals, and TC4 orthopedic implants may have toxic vanadium ions dissolved in the human body, which limits their application. . In order to expand the application range of titanium and titanium alloys, the medical devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C23G1/10
CPCC23G1/106C25D11/26
Inventor 陈晓明董乃光王爱国宋志伟
Owner CHANGZHOU ORTHMED MEDICAL INSTR
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