Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
POWDER AND METHOD FOR PRODUCING SAME
Provided are: a zirconia powder which is suitable for industrial production, and which is capable of obtaining a sintered body having high light transmittance even when sintered at normal pressure; a method for producing the zirconia powder; a method for producing a pre-sintered body using the zirconia powder; and a method for producing a sintered body using the zirconia powder. A zirconia powder containing 2 mol% or more and 8 mol% or less of a stabilizing element and 50 ppm or less of titanium (Ti), and having an activation energy of 225 kJ/mol or more and 300 kJ/mol or less. The powder is preferably obtained by a production method comprising a step for setting the pH of a starting material solution containing a zirconium source and a stabilizing element source to 3.5-5.5, a step for heating the starting material solution to obtain a zirconia sol solution, a step for mixing the zirconia sol solution and an alkali solution to obtain a coprecipitate, and a step for producing the coprecipitate. And a step for heat-treating the co-precipitate.
本发明提供即使是常压烧结也能够得到具有高透光性的烧结体，并且适合工业制造的氧化锆粉末、其制造方法、使用其的预烧结体的制造方法、以及使用其的烧结体的制造方法中的至少一种。一种氧化锆的粉末，其包含2mol％以上且8mol％以下的稳定化元素和50ppm以下的钛(Ti)，并且活化能为225kJ/mol以上且300kJ/mol以下。这样的粉末优选通过具有以下工序的制造方法而得到：将包含锆源和稳定化元素源的原料溶液的pH设为3.5以上且5.5以下的工序，加热该原料溶液而得到氧化锆溶胶溶液的工序，将该氧化锆溶液和碱溶液混合而得到共沉淀物的工序，以及对该共沉淀物进行热处理的工序。
POWDER AND METHOD FOR PRODUCING SAME
Provided are: a zirconia powder which is suitable for industrial production, and which is capable of obtaining a sintered body having high light transmittance even when sintered at normal pressure; a method for producing the zirconia powder; a method for producing a pre-sintered body using the zirconia powder; and a method for producing a sintered body using the zirconia powder. A zirconia powder containing 2 mol% or more and 8 mol% or less of a stabilizing element and 50 ppm or less of titanium (Ti), and having an activation energy of 225 kJ/mol or more and 300 kJ/mol or less. The powder is preferably obtained by a production method comprising a step for setting the pH of a starting material solution containing a zirconium source and a stabilizing element source to 3.5-5.5, a step for heating the starting material solution to obtain a zirconia sol solution, a step for mixing the zirconia sol solution and an alkali solution to obtain a coprecipitate, and a step for producing the coprecipitate. And a step for heat-treating the co-precipitate.
本发明提供即使是常压烧结也能够得到具有高透光性的烧结体，并且适合工业制造的氧化锆粉末、其制造方法、使用其的预烧结体的制造方法、以及使用其的烧结体的制造方法中的至少一种。一种氧化锆的粉末，其包含2mol％以上且8mol％以下的稳定化元素和50ppm以下的钛(Ti)，并且活化能为225kJ/mol以上且300kJ/mol以下。这样的粉末优选通过具有以下工序的制造方法而得到：将包含锆源和稳定化元素源的原料溶液的pH设为3.5以上且5.5以下的工序，加热该原料溶液而得到氧化锆溶胶溶液的工序，将该氧化锆溶液和碱溶液混合而得到共沉淀物的工序，以及对该共沉淀物进行热处理的工序。
POWDER AND METHOD FOR PRODUCING SAME
粉末及其制造方法
MATSUI KOJI (Autor:in) / IMAI TAKESHI (Autor:in) / HOSOI KOHEI (Autor:in)
05.07.2024
Patent
Elektronische Ressource
Chinesisch