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Electrophoretic deposition-microwave sintering combined processing method for nickel-chromium baked porcelain denture

A technology of electrophoretic deposition and microwave sintering, applied in the direction of electrophoretic plating, electrolytic coating, metal material coating technology, etc., can solve the problems of poor repeatability, over-reliance on artificial coating in denture processing, etc., to reduce thermal stress and improve microstructure Uniformity, effect of reducing cracking

Active Publication Date: 2017-01-04
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem that the processing of nickel-chromium porcelain dentures in the prior art relies too much on manual coating and has poor repeatability, the present invention provides an electrophoretic deposition-microwave sintering composite processing method for nickel-chromium porcelain dentures. The prepared denture coating The layer is uniform and dense, with good bonding force, suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] I. Mix 70mL of ethanol and 30mL of water, disperse 1.5g of VITA VMK 95 porcelain powder, and prepare a suspension by magnetic stirring and ultrasonic oscillation.

[0027] II. The nickel-chromium alloy base crowns were polished with sandpaper and pretreated by sandblasting, then ultrasonically cleaned with acetone, deionized water, and ethanol, and dried for later use. In the electrophoretic deposition system, the nickel-chromium alloy substrate crown was used as the anode, and the platinum sheet electrode was used as the cathode. The electrophoretic deposition voltage was 40V, the distance between the electrodes was 2 cm, and the electrophoretic deposition time was 15 minutes. After the deposition was completed, the sample was taken out and placed in an electric blast drying oven, and dried at 60°C for 8 hours.

[0028] III. Using the method of microwave heating, put the deposited nickel-chromium alloy porcelain into a microwave heating furnace, raise the temperature...

Embodiment 2

[0030] I. Mix 60mL of methanol and 40mL of water, add 1.0 g of Vita (VITA VMK 95) porcelain powder for dispersion, and prepare a suspension by magnetic stirring and ultrasonic oscillation.

[0031] II. The nickel-chromium alloy base crowns were polished with sandpaper and pretreated by sandblasting, then ultrasonically cleaned with acetone, deionized water, and ethanol, and dried for later use. In the electrophoretic deposition system, the nickel-chromium alloy base crown was used as the anode, and the platinum sheet electrode was used as the cathode. The electrophoretic deposition voltage was 75 V, the distance between the electrodes was 3 cm, and the electrophoretic deposition time was 20 minutes. After the deposition was completed, the sample was taken out and placed in an electric blast drying oven, and dried at 60°C for 8 hours.

[0032] III. Using the method of microwave heating, put the deposited nickel-chromium alloy porcelain into a microwave heating furnace, raise ...

Embodiment 3

[0034] I. Mix 50mL of propanol and 50mL of water, add 2.0g of SHOFU (Vintage Halo) porcelain powder to disperse, and prepare a suspension by magnetic stirring and ultrasonic oscillation.

[0035] II. The nickel-chromium alloy base crowns were polished with sandpaper and pretreated by sandblasting, then ultrasonically cleaned with acetone, deionized water, and ethanol, and dried for later use. In the electrophoretic deposition system, the nickel-chromium alloy base crown is used as the anode, and the platinum sheet or graphite electrode is used as the cathode. The electrophoretic deposition voltage is 20V, the distance between the electrodes is 1 cm, and the electrophoretic deposition time is 10 minutes. After the deposition was completed, the sample was taken out and placed in an electric blast drying oven, and dried at 60°C for 8 hours.

[0036]III. Using the method of microwave heating, put the deposited nickel-chromium alloy porcelain into a microwave heating furnace, rai...

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Abstract

The invention discloses an electrophoretic deposition-microwave sintering combined processing method for a nickel-chromium baked porcelain denture. The method includes depositing a porcelain layer with a specific thickness on the surface of a nickel-chromium alloy by an electrophoretic deposition method and cladding the porcelain layer on the nickel-chromium alloy by means of microwave heating so as to obtain the nickel-chromium baked porcelain denture. The nickel-chromium baked porcelain denture prepared by the method is uniform in coating and good in bonding force, and accordingly the method can be widely applied to a nickel-chromium baked porcelain denture processing process.

Description

technical field [0001] The invention belongs to the technical field of biomaterials, and in particular relates to an electrophoretic deposition-microwave sintering composite processing method of a nickel-chromium porcelain denture. Background technique [0002] Dental ceramic materials have become the most important method for the treatment of tooth loss due to their good biocompatibility, wear resistance and corrosion resistance, and natural and lifelike color since their clinical application. Nickel-chromium alloy porcelain dentures have always occupied an important position in domestic denture restoration because of their low price, durability, and service life of up to 15 years or even higher. The nickel-chromium alloy porcelain layer includes opaque porcelain, body porcelain and enamel porcelain. The methods for preparing coatings on metal substrates mainly include manual coating-sintering, plasma spraying and electrophoretic deposition and sintering. The manual coati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/02C23C24/10
CPCC23C24/10C25D13/02
Inventor 郭立童冯伟刘学梅陈啸远凌意瀚冯培忠强颖怀
Owner CHINA UNIV OF MINING & TECH
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