Electrophoretic deposition-microwave sintering combined machining method of titanium bonded porcelain layer

An electrophoretic deposition and microwave sintering technology, applied in electrophoretic plating, metal material coating process, coating and other directions, can solve the problems of poor repeatability and low bonding strength of artificial coating, and improve the interface bonding strength and edge adaptability. , The effect of promoting sintering densification and reducing cracking

Active Publication Date: 2017-06-13
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Compared with the prior art, the present invention creatively combines electrophoretic deposition and microwave sintering and applies it to the preparation process of the bonding porcelain layer of titanium porcelain dentures. The technical problems of low bonding strength caused by excessive surface oxidation and poor repeatability of manual coating can significantly improve the interface bonding strength and edge adaptability between titanium ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, mix 0.45g of titanium powder with 2.55g of Vita Titankeramik titanium bonded porcelain powder and grind to make 3.0g of composite titanium bonded porcelain powder; mix 80mL of ethanol and 20mL of water, add 0.6g of Sodium alginate and 3.0 g of composite titanium bonded porcelain powder were dispersed, and a suspension was prepared by magnetic stirring. Dental pure titanium 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 dental pure titanium base crown is used as the cathode, the platinum sheet electrode is used as the anode, the electrophoretic deposition voltage is 10V, the distance between the electrodes is 1cm, and the electrophoretic deposition time is 25 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 ho...

Embodiment 2

[0018] First, mix 0.04g of titanium powder with 0.36g of Vita Titankeramik titanium bonded porcelain powder and grind to make 0.4g of composite titanium bonded porcelain powder; mix 70mL of methanol and 30mL of water, add 0.10g of Sodium alginate and 0.4g of composite titanium bonding porcelain powder were dispersed, and a suspension was prepared by magnetic stirring. Dental pure titanium 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 dental pure titanium base crown is used as the cathode, the platinum sheet electrode is used as the anode, the electrophoretic deposition voltage is 20V, the distance between the electrodes is 1.5cm, and the electrophoretic deposition time is 30 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 ...

Embodiment 3

[0020] First, 0.3g of titanium powder and 5.7g of Dentsply (Tibond) titanium bonded porcelain powder were mixed and ground to make 6.0g of composite titanium bonded porcelain powder; 60mL of propanol and 40mL of water were mixed and added to 0.8g of sodium alginate and 4.0g of composite titanium bonding porcelain powder were dispersed, and a suspension was prepared by magnetic stirring. Dental Ti6Al4V alloy-based crowns were ground 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 dental Ti6Al4V alloy base crown is used as the cathode, and the platinum sheet or graphite electrode is used as the anode. The electrophoretic deposition voltage is 50V, the distance between the electrodes is 3cm, and the electrophoretic deposition time is 15 minutes. After the deposition was completed, the sample was taken out and placed in an electric blast dry...

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Abstract

Disclosed is an electrophoretic deposition-microwave sintering combined machining method of a titanium bonded porcelain layer. The method comprises the steps that titanium powder and titanium bonded porcelain powder are mixed and ground to form composite titanium bonded porcelain powder, wherein the weight percentage of the titanium powder ranges from 2% to 20%, and the weight percentage of the titanium bonded porcelain powder ranges from 80% to 98%; a composite bonded porcelain layer with a certain thickness is formed on the surface of a dental pure titanium and titanium alloy substrate in a deposition mode through an electrophoretic deposition method; and then the porcelain layer is formed on the material surface of the dental pure titanium and titanium alloy substrate through fusion covering in a microwave heating mode, and therefore a dental titanium baked porcelain artificial tooth is formed. According to the electrophoretic deposition-microwave sintering combined machining method of the titanium bonded porcelain layer, operation is convenient, the technological process is easy to control, material liquid can be recycled, pollutant emission is avoided, the needed facilities are simple, the technological cost is low, and continuous production can be achieved.

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 titanium bonded porcelain layer. 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. Dental pure titanium and titanium alloys have been widely used in the oral cavity because they do not contain nickel and beryllium elements that are harmful to the human body and are not prone to allergies. Compared with nickel-chromium porcelain teeth, dental pure titanium and titanium alloy porcelain teeth have higher corrosion resistance and better biocompatibility, and are not prone to black gums or bleeding gums. They are safe, reliable and low in price. It is an ideal choice for ...

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 郭立童薛北京陈啸远任宣儒张金勇冯培忠强颖怀
Owner CHINA UNIV OF MINING & TECH
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