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Powder composition, pre-sintered body, sintered body, and method for producing same
Provided is a powder composition which has zirconium oxide having a high content of a stabilizing element as a matrix and which can be sintered for a short period of time to obtain a sintered body that satisfies the light transmission and mechanical strength required as a dental restoration, in particular as an anterior denture. Provided is a powder composition characterized by containing two or more types of stabilized zirconia having different stabilizing element contents, the stabilizing element content being more than 4.0 mol% but not more than 5.8 mol%, the rate of change in thermal shrinkage per unit temperature at 1300 DEG C being not more than 0.07% DEG C-1, and the powder composition further having a specific surface area of not more than 30 [mu] m and a specific surface area of not more than 30 [mu] m. The content of a stabilizing element in the stabilized zirconia is 8.0 mol% or less.
本发明提供一种粉末组合物，其以稳定化元素的含量高的氧化锆为基体，并且通过短时间烧结能够得到满足作为牙科修复件、特别是前齿用义齿要求的透光性和机械强度的烧结体。本发明提供一种粉末组合物，其特征在于，包含稳定化元素的含量不同的2种以上的稳定化氧化锆，稳定化元素的含量为超过4.0mol％且5.8mol％以下，并且，1300℃下的每单位温度的热收缩率的变化速度为0.07％℃‑1以下，进而，所述稳定化氧化锆的稳定化元素的含量为8.0mol％以下。
Powder composition, pre-sintered body, sintered body, and method for producing same
Provided is a powder composition which has zirconium oxide having a high content of a stabilizing element as a matrix and which can be sintered for a short period of time to obtain a sintered body that satisfies the light transmission and mechanical strength required as a dental restoration, in particular as an anterior denture. Provided is a powder composition characterized by containing two or more types of stabilized zirconia having different stabilizing element contents, the stabilizing element content being more than 4.0 mol% but not more than 5.8 mol%, the rate of change in thermal shrinkage per unit temperature at 1300 DEG C being not more than 0.07% DEG C-1, and the powder composition further having a specific surface area of not more than 30 [mu] m and a specific surface area of not more than 30 [mu] m. The content of a stabilizing element in the stabilized zirconia is 8.0 mol% or less.
本发明提供一种粉末组合物，其以稳定化元素的含量高的氧化锆为基体，并且通过短时间烧结能够得到满足作为牙科修复件、特别是前齿用义齿要求的透光性和机械强度的烧结体。本发明提供一种粉末组合物，其特征在于，包含稳定化元素的含量不同的2种以上的稳定化氧化锆，稳定化元素的含量为超过4.0mol％且5.8mol％以下，并且，1300℃下的每单位温度的热收缩率的变化速度为0.07％℃‑1以下，进而，所述稳定化氧化锆的稳定化元素的含量为8.0mol％以下。
Powder composition, pre-sintered body, sintered body, and method for producing same
粉末组合物、预烧体、烧结体及其制造方法
AZECHI SHO (author) / HIGUCHI YUYA (author) / FUJISAKI HIROYUKI (author) / NAGAYAMA HITOSHI (author) / KAWAMURA KIYOTAKA (author)
2024-05-03
Patent
Electronic Resource
Chinese
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