Supercharge Your Innovation With Domain-Expert AI Agents!

Surface strengthening method for cobalt chromium alloy or pure titanium denture support

A cobalt-chromium alloy and surface-strengthening technology, applied in the field of denture materials, can solve the problems of poor biocompatibility, affect material performance, poor wear resistance of pure titanium surface, etc., and achieve the effect of strong bonding force and good corrosion resistance.

Inactive Publication Date: 2015-02-25
桂林市口腔医院
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cobalt-chromium alloys have poor biocompatibility. They exist in the complex and changeable oral environment for a long time, and electrochemical and chemical reactions will occur. Metal ions such as cobalt and chromium are released through corrosion, which not only affects the performance of the material, but may even cause allergies. and other adverse reactions
Pure titanium has good chemical stability and biocompatibility. At room temperature, a stable and dense oxide film can be formed on the surface to play a role in corrosion resistance. However, the surface of pure titanium has poor wear resistance and is prone to scratches and pigmentation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for strengthening the surface of a cobalt-chromium alloy denture bracket, comprising the steps of:

[0017] (1) Complete the production of cobalt-chromium alloy bracket specimens according to the specifications of 20mm×10mm×2mm by casting method, and grind and polish to the surface roughness R a <0.8μm;

[0018] (2) Put the polished test piece in distilled water, absolute ethanol, and acetone for ultrasonic cleaning for 15-20 minutes, then dry it with nitrogen; then place the test piece in an LDMC-1 ion nitriding furnace for ion nitriding , the temperature in the furnace is 520°C, and the ammonia gas NH is fed in at a flow rate of 0.5L / min. 3 , the pressure in the furnace is 2000 Pa, and the nitriding time is 6 hours;

[0019] (3) Put the sample after ion nitriding into the ABS-1600 filter arc ion plating equipment, use the titanium target with a purity of 99.99% as the raw material, in order to enhance the bonding force of the film base, first deposit pure o...

Embodiment 2

[0022] A method for strengthening the surface of a pure titanium denture bracket, comprising the steps of:

[0023] (1) Complete the production of pure titanium denture bracket specimens according to the specifications of 20mm×10mm×2mm by casting method, and grind and polish to the surface roughness R a <0.8μm;

[0024] (2) Put the polished test piece in distilled water, absolute ethanol, and acetone for ultrasonic cleaning for 15-20 minutes, then dry it with nitrogen; then place the test piece in an LDMC-1 ion nitriding furnace for ion nitriding , the temperature in the furnace is 520°C, and the ammonia gas NH is fed in at a flow rate of 0.5L / min. 3 , the furnace pressure is 2000 Pa, and the nitriding time is 2 hours;

[0025] (3) Put the sample after ion nitriding into the ABS-1600 filter arc ion plating equipment, use the titanium target with a purity of 99.99% as the raw material, in order to enhance the bonding force of the film base, first deposit pure on the nitriding...

Embodiment 3

[0028] A method for strengthening the surface of a pure titanium denture bracket, comprising the steps of:

[0029] (1) Complete the production of pure titanium denture bracket specimens according to the specifications of 20mm×10mm×2mm by casting method, and grind and polish to the surface roughness R a <0.8μm;

[0030] (2) Put the polished test piece in distilled water, absolute ethanol, and acetone for ultrasonic cleaning for 15-20 minutes, then dry it with nitrogen; then place the test piece in an LDMC-1 ion nitriding furnace for ion nitriding , the temperature in the furnace is 520°C, and the ammonia gas NH is fed in at a flow rate of 0.5L / min. 3 , the furnace pressure is 2000 Pa, and the nitriding time is 4 hours;

[0031] (3) Put the sample after ion nitriding into the ABS-1600 filter arc ion plating equipment, use the titanium target with a purity of 99.99% as the raw material, in order to enhance the bonding force of the film base, first deposit pure on the nitriding...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a surface strengthening method for cobalt chromium alloy or pure titanium denture support. The method is as below: (1) polishing the cobalt chromium alloy or titanium denture support to surface roughness Ra reaching less than 0.8 mum; (2) conducting ultrasonic washing on the denture support successively in distilled water, anhydrous ethanol and acetone for 15-20 min and drying with nitrogen; (3) conducting ion nitriding on the support in an LDMC-1 type ion nitriding furnace for 1-6 h; (4) depositing pure titanium transition layer on the support for 5-8 min; and (5) depositing the titanium nitride coating for 1-4 h. According to the invention, a stable non-toxic and smooth film is formed on the surface of the cobalt chromium alloy or titanium denture support, and has the characteristics of wear resistance, good corrosion resistance and strong binding force with base material.

Description

technical field [0001] The invention relates to a denture material, in particular to a method for strengthening the surface of a cobalt-chromium alloy or pure titanium denture bracket. Background technique [0002] Both cobalt-chromium alloy and pure titanium metal have good mechanical properties and castability. Denture brackets cast with cobalt-chromium alloy or pure titanium metal are light in weight, small in thickness, easy to wear and comfortable to wear, so they are highly praised by dentists and patients. However, cobalt-chromium alloys have poor biocompatibility. They exist in the complex and changeable oral environment for a long time, and electrochemical and chemical reactions will occur. Metal ions such as cobalt and chromium are released through corrosion, which not only affects the performance of the material, but may even cause allergies. and other adverse reactions. Pure titanium has good chemical stability and biocompatibility. At room temperature, a stable...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C8/36C23C14/06C23C14/14C23C14/32A61C13/12
CPCC23C28/322A61C13/12C23C8/36C23C14/06C23C14/14C23C14/32
Inventor 唐震宇张伟一钱成明朱归胜王萍王辉
Owner 桂林市口腔医院
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com