Preparation method for ivory color-imitating yttrium oxide and praseodymium oxide co-stabilized tetragonal zirconia nano ceramic powder

A nano-ceramic powder, phase zirconia technology, applied in the field of bioceramics, can solve the problems of unfavorable dental tissue protection, uneven coloring, increased tooth preparation, etc., and achieves improved mechanical properties, short synthesis time, and reduced ceramic sintering temperature. Effect

Active Publication Date: 2014-02-05
NANCHANG UNIV
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The base crown has a single color, which makes the use of opaque porcelain essential. In order to obtain a better layering and better aesthetic effect, the thickness of the veneer porcelain will increase, which increases the amount of tooth preparation and protects the dental tissue. unfavorable
[0003] At present, there are mainly two methods of dyeing solution soaking and powder mixing bulk coloring in clinical practice, but both of them have disadvantages such as uneven coloring, poor repeatability, and colorants are easy to volatilize during sintering.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method for ivory color-imitating yttrium oxide and praseodymium oxide co-stabilized tetragonal zirconia nano ceramic powder
  • Preparation method for ivory color-imitating yttrium oxide and praseodymium oxide co-stabilized tetragonal zirconia nano ceramic powder
  • Preparation method for ivory color-imitating yttrium oxide and praseodymium oxide co-stabilized tetragonal zirconia nano ceramic powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 3. 1137g ZrOCl 2 ·8H 2 O, 0.0339g Y 2 o3 and 0.0077g Pr 6 o 11 , adding an excess of 1:1 nitric acid and heating to dissolve Y 2 o 3 and Pr 6 o 11 , to form a clear solution of yttrium nitrate and praseodymium nitrate, the weighed ZrOCl 2 ·8H 2 O is completely dissolved in it to obtain a mixed salt solution of the metal contained in the target product, then add 1.7532g NaCl and 1.7113g glycine to the solution, heat and dissolve completely, then concentrate the mixed solution until it is viscous, and put it into the set temperature It is ignited in a chamber with a constant temperature of 500°C. After the combustion is completed, the sample is taken out, washed, filtered, and dried to obtain a specific surface area of ​​128 m 2 g -1 of (Pr 6 o 11 ) 0.00075 (Y 2 o 3 ) 0.015 (ZrO 2 ) 0.9655 Pale yellow powder.

Embodiment 2

[0027] Weigh 3.0992g ZrOCl 2 ·8H 2 O, 0.0677g Y 2 o 3 and 0.0153g Pr 6 o 11 Add excess 1:1 nitric acid and heat to dissolve Y 2 o 3 and Pr 6 o 11 , to form a clear solution of yttrium nitrate and praseodymium nitrate, the weighed ZrOCl 2 ·8H 2 O is completely dissolved in it to obtain a mixed salt solution of the metal contained in the target product, and then add 1.7532g NaCl and 1.7009g glycine to the solution, heat and dissolve completely, then concentrate the mixed solution until viscous, and put it into the set temperature It is ignited in a chamber with a constant temperature of 500°C. After the combustion is completed, the sample is taken out, washed, filtered, and dried to obtain a specific surface area of ​​127 m 2 g -1 of (Pr 6 o 11 ) 0.0015 (Y 2 o 3 ) 0.015 (ZrO 2 ) 0.961 Pale yellow powder.

Embodiment 3

[0029] Weigh 2.9831g ZrOCl 2 ·8H 2 O, 0.0677g Y 2 o 3 and 0.0255g Pr 6 o 11 Add excess 1:1 nitric acid and heat to dissolve Y 2 o 3 and Pr 6 o 11 , to form a clear solution of yttrium nitrate and praseodymium nitrate, the weighed ZrOCl 2 ·8H 2 O is completely dissolved in it to obtain the mixed salt solution of the metal contained in the target product, then add 2.2365 g KCl and 0.5193 g urea to the solution, heat and dissolve completely, then concentrate the mixed solution to a viscous state, and put it into the set temperature It is ignited in a chamber with a constant temperature of 500°C. After the combustion is completed, the sample is taken out, washed, filtered, and dried to obtain a specific surface area of ​​318 m 2 g -1 of (Pr 6 o 11 ) 0.0025 (Y 2 o 3 ) 0.03 (ZrO 2 ) 0.925 Pale yellow powder.

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
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method for ivory color-imitating yttrium oxide and praseodymium oxide co-stabilized tetragonal zirconia nano ceramic powder. The preparation method is characterized by comprising the following steps of (1) weighing zirconium oxychloride octahydrate barium hydroxide octahydrate, a praseodymium raw material and a yttrium raw material respectively according to stoichiometric ratio of various metal elements in (Pr6O11)x(Y2O3)y(ZrO2)1-6x-2y (wherein 0.0020 <= x+ y <= 0.1500,10<-6> <= x <= 0.0200), dissolving the praseodymium raw material and the yttrium raw material and transferring the praseodymium raw material and the yttrium raw material into a mixed solution of nitrate, and dissolving the zirconium oxychloride octahydrate in the mixed solution; (2) adding a soluble salt and an organic fuel into the mixed solution obtained by the step (1), heating to dissolve the soluble salt and the organic fuel, heating and concentrating the solution into a sticky state and adding the concentrated material into a heating furnace cavity at a temperature of 400-1,000 DEG C and igniting; and (3) washing, filtering and drying a product. The powder particles prepared by the invention are spheres which are uniform in size and good in dispersion. The particle size is 2-6 nm; and a specific surface area can reach 318 m<2>.g<-1>. The preparation method is simple in process, low in equipment requirements and short in synthesis time, can form the phase in one step; and is low in energy consumption and low in cost.

Description

technical field [0001] The invention belongs to the field of biological ceramics, in particular to a preparation method of imitation tooth-colored yttrium-zirconium oxide nano ceramic powder. Background technique [0002] ZrO 2 Ceramic dental restorations have received great attention in recent years because of their good biocompatibility, chemical stability in the oral environment, thermal conductivity similar to natural teeth, and wear rates similar to natural tooth enamel. . Especially 3mol%Y 2 o 3 Doped ZrO 2 Ceramics are widely used in oral restorative materials because of their good mechanical properties. For oral restorative materials, in addition to the mechanical properties of the material, the color properties of the material must also be considered. However, the color of the zirconia underlying crown is single, and there is only one chalky color, which is monotonous compared with the base color of other full-tooth materials. For example, In-Ceram's alumina-...

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
IPC IPC(8): C04B35/488C04B35/626
Inventor 陈伟凡邹煌龙王文慧卓明鹏刘越王琳琳石连水
Owner NANCHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap