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A platform for research: civil engineering, architecture and urbanism
Preparation method of colored zirconia ceramic powder for false teeth
The invention relates to a preparation method of colored zirconia ceramic powder for false teeth. The preparation method comprises the following steps: preparing zirconium oxychloride into an aqueous solution, adding a metal oxide and yttrium oxide, and dissolving to obtain a solution; then carrying out hydrothermal reaction; adjusting the pH value of the solution after the hydrothermal reaction to be alkaline to obtain slurry; washing the slurry with water until the conductivity is below 2500mu s/cm; and drying the washed slurry, adding a dispersant, grinding, sieving, calcining to obtain a colored zirconia ceramic precursor, adding a binder into the colored zirconia ceramic precursor, and carrying out ball milling to obtain the colored zirconia ceramic powder. The solid metal oxide is directly dissolved in zirconium oxide, and after rare earth metal ions are colored, the use amount of other transition metal oxide pigments is reduced, so that the influence of the transition metal oxide pigments enriched in a crystal boundary on sintering densification is reduced, the adverse influence on the material strength is avoided, and the coloring is more stable and uniform.
本发明涉及一种义齿用有色氧化锆陶瓷粉末的制备方法：将氯氧化锆配制成水溶液，并加入金属氧化物和氧化钇进行溶解得到溶液；然后进行水热反应；将水热反应后的溶液调pH至碱性，得到浆料；将浆料水洗至电导率为2500μs/cm以下；将水洗后的浆料进行干燥，并加入分散剂研磨过筛，并煅烧得到有色氧化锆陶瓷前体，将有色氧化锆陶瓷前体中加入粘结剂，并进行球磨，得到所述的有色氧化锆陶瓷粉末。采用直接将固体金属氧化物固溶在氧化锆中，其中稀土金属离子着色后，其它过渡金属氧化物色料的用量减少，从而降低富集于晶界的过渡金属氧化物色料对烧结致密化的影响，避免对材料强度的不利影响，而且着色更加稳定、均匀。
Preparation method of colored zirconia ceramic powder for false teeth
The invention relates to a preparation method of colored zirconia ceramic powder for false teeth. The preparation method comprises the following steps: preparing zirconium oxychloride into an aqueous solution, adding a metal oxide and yttrium oxide, and dissolving to obtain a solution; then carrying out hydrothermal reaction; adjusting the pH value of the solution after the hydrothermal reaction to be alkaline to obtain slurry; washing the slurry with water until the conductivity is below 2500mu s/cm; and drying the washed slurry, adding a dispersant, grinding, sieving, calcining to obtain a colored zirconia ceramic precursor, adding a binder into the colored zirconia ceramic precursor, and carrying out ball milling to obtain the colored zirconia ceramic powder. The solid metal oxide is directly dissolved in zirconium oxide, and after rare earth metal ions are colored, the use amount of other transition metal oxide pigments is reduced, so that the influence of the transition metal oxide pigments enriched in a crystal boundary on sintering densification is reduced, the adverse influence on the material strength is avoided, and the coloring is more stable and uniform.
本发明涉及一种义齿用有色氧化锆陶瓷粉末的制备方法：将氯氧化锆配制成水溶液，并加入金属氧化物和氧化钇进行溶解得到溶液；然后进行水热反应；将水热反应后的溶液调pH至碱性，得到浆料；将浆料水洗至电导率为2500μs/cm以下；将水洗后的浆料进行干燥，并加入分散剂研磨过筛，并煅烧得到有色氧化锆陶瓷前体，将有色氧化锆陶瓷前体中加入粘结剂，并进行球磨，得到所述的有色氧化锆陶瓷粉末。采用直接将固体金属氧化物固溶在氧化锆中，其中稀土金属离子着色后，其它过渡金属氧化物色料的用量减少，从而降低富集于晶界的过渡金属氧化物色料对烧结致密化的影响，避免对材料强度的不利影响，而且着色更加稳定、均匀。
Preparation method of colored zirconia ceramic powder for false teeth
一种义齿用有色氧化锆陶瓷粉末的制备方法
JIANG YAN (author) / CAO FENG (author) / GAO YUAN (author) / ZHU XIAODONG (author)
2022-06-21
Patent
Electronic Resource
Chinese
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