摘要:
The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: a zirconia stabilizer selected from the group containing Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the weight content of stabilizer, based on the total zirconia and stabilizer content, being between 2% and 20% and the MgO+CaO content being less than 5% based on the total zirconia and stabilizer content; at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a lass transition temperature greater than 25° C.; 5-50% alumina; 0-2% of an alumina sintering additive; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; 0-6% of an additional oxide selected from a manganese oxide, ZnO, La2O3, SrO, BaO and mixtures thereof; less than 2% impurities; and ZrO2 to make up 100%. According to the invention, the total lanthanum oxide content is less than 6%, the median diameter D50 of the powder is between 80 and 130 μm, the percentile D99.5 is less than 500 μm and the relative density of the granules is between 30% and 60%.
摘要翻译:本发明涉及一种特别用于生产陶瓷烧结部件的造粒粉末,所述粉末具有以干物质为基础的以下化学重量组成,即:选自含有Y 2 O 3,Sc 2 O 3,MgO, CaO,CeO 2及其混合物,基于总氧化锆和稳定剂含量,稳定剂的重量含量为2%至20%,MgO + CaO含量小于总氧化锆和稳定剂含量的5%; 至少1%的玻璃化转变温度低于或等于25℃的第一粘合剂; 0-4%的另外的粘合剂具有大于25℃的转变温度。 5-50%氧化铝; 0-2%的氧化铝烧结添加剂; 不同于第一粘合剂和附加粘合剂的临时添加剂的0-4%,第一粘合剂,附加粘合剂和临时添加剂的总含量小于9%; 0-6%的选自氧化锰,ZnO,La 2 O 3,SrO,BaO的其它氧化物及其混合物; 小于2%杂质; 和ZrO2组成100%。 根据本发明,总氧化镧含量小于6%,粉末的中值粒径D50为80〜130μm,百分位数D99.5小于500μm,颗粒的相对密度为30 %和60%。
摘要:
Disclosed is a particulate mixture having the following chemical composition, in percentages by weight on the basis of the oxides: ZrO2: ≧10.0%; 2%
摘要:
A porous structure comprising a ceramic material, mainly formed by or consisting of an oxide material comprising titanium, aluminum, zirconium and silicium satisfying the following composition, in wt % on the basis of the oxides: more than 15% but less than 55% Al2O3; more than 20% but less than 45% TiO2; more than 1% but less than 30% SiO2; more than 0.7% but less than 20%, in total, of at least one oxide chosen from ZrO2, Ce2O3 and HfO2; less than 1% MgO; said composition furthermore comprising other elements chosen, on the basis of oxides, from CaO, Na2O, K2O, SrO, B2O3 and BaO, the total summed amount of said oxides being less than 15% but greater than 1%; and said material being obtained by reactive sintering of said simple oxides or of one of their precursors, or by heat treatment of sintered particles, satisfying said composition.
摘要翻译:一种多孔结构,其主要由氧化物形成或由氧化物材料构成,所述氧化物材料包含钛,铝,锆和硅,其满足以下组成:以氧化物为基准的重量%:大于15%但小于55%的Al 2 O 3 ; 超过20%但小于45%的TiO2; 超过1%但小于30%的SiO2; 总共含有选自ZrO 2,Ce 2 O 3和HfO 2中的至少一种氧化物的0.7%以上且小于20% 小于1%的MgO; 所述组合物还包含基于氧化物选自CaO,Na 2 O,K 2 O,SrO,B 2 O 3和BaO的其它元素,所述氧化物的总量小于15%但大于1%; 并且所述材料通过所述简单氧化物或其前体之一的反应性烧结或通过热处理烧结颗粒而获得,满足所述组成。
摘要:
The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: a zirconia stabiliser selected from the group containing Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the weight content of stabiliser, based on the total zirconia and stabiliser content, being between 2% and 20% and the MgO+CaO content being less than 5% based on the total zirconia and stabiliser content; at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 5-50% alumina; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; less than 2% impurities; and ZrO2 to make up 100%. According to the invention, the median diameter D50 of the powder is between 80 and 130 μm, the percentile D99.5 is less than 500 μm and the relative density of the granules is between 30% and 60%.
摘要翻译:本发明涉及一种特别用于生产陶瓷烧结部件的造粒粉末,所述粉末具有以干物质为基础的以下化学重量组成,即:选自含有Y 2 O 3,Sc 2 O 3,MgO, CaO,CeO 2及其混合物,基于总氧化锆和稳定剂含量,稳定剂的重量含量为2%至20%,MgO + CaO含量小于总氧化锆和稳定剂含量的5%; 至少1%的玻璃化转变温度低于或等于25℃的第一粘合剂; 0-4%的玻璃化转变温度大于25℃的附加粘合剂; 5-50%氧化铝; 不同于第一粘合剂和附加粘合剂的临时添加剂的0-4%,第一粘合剂,附加粘合剂和临时添加剂的总含量小于9%; 小于2%杂质; 和ZrO2组成100%。 根据本发明,粉末的中值粒径D50在80和130μm之间,百分比D99.5小于500μm,颗粒的相对密度在30%和60%之间。
摘要:
Porous structure comprising an oxide ceramic material comprising, on the basis of the corresponding simple oxides: Al2O3, TiO2, at least one oxide of an element M2 chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3, at least one oxide of an element M3 chosen from the group formed by ZrO2, Ce2O3 and HfO2, optionally at least one oxide of an element M1 chosen from MgO and CoO, and optionally SiO2, said material being obtained by the reactive sintering of the corresponding simple oxides or of their precursors or by heat treatment of the sintered particles satisfying said composition.
摘要翻译:包含氧化物陶瓷材料的多孔结构,其包含基于相应的简单氧化物:Al 2 O 3,TiO 2,至少一种选自Fe 2 O 3,Cr 2 O 3,MnO 2,La 2 O 3,Y 2 O 3和Ga 2 O 3的元素的氧化物,至少 选自由ZrO 2,Ce 2 O 3和HfO 2形成的基团中的元素M3的一种氧化物,任选的至少一种选自MgO和CoO的元素M1的氧化物,以及任选的SiO 2,所述材料通过相应的简单氧化物的反应性烧结获得 或其前体或通过热处理满足所述组合物的烧结颗粒。
摘要:
An article with a sintered decorative part obtained from a particulate mixture having the following chemical composition: zirconia ZrO2: complement to 100%; 0.5% to 10.0% of oxide(s) with a perovskite structure; 2.0% to 20.0% of a stabilizer for zirconia selected from Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the quantity MgO+CaO being less than 5.0%; less than 2.0% of a sintering additive selected from Al2O3, ZnO, TiO2, and mixtures thereof; and less than 2.0% of other oxides.
摘要:
The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; 0-15% of an additive for sintering the ceramic material; at least 2% impurities; and the remainder comprising a ceramic material, and optionally an agent for stabilizing said ceramic material, to make up 100%. According to the invention, the median diameter D50 of the powder is between 80 and 130 μm, the percentile D99.5 is less than 500 μm and the relative density of the granules is between 30% and 60%.
摘要:
An article with a sintered decorative part obtained from a particulate mixture having the following chemical composition: zirconia ZrO2: complement to 100%; 0.5% to 10.0% of oxide(s) with a perovskite structure; 2.0% to 20.0% of a stabilizer for zirconia selected from Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the quantity MgO+CaO being less than 5.0%; less than 2.0% of a sintering additive selected from Al2O3, ZnO, TiO2, and mixtures thereof; and less than 2.0% of other oxides.
摘要:
The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: a zirconia stabiliser selected from the group containing Y2O3, Sc2O3, MgO, CaO, CeO2, and mixtures thereof, the weight content of stabiliser, based on the total zirconia and stabiliser content, being between 2% and 20% and the MgO+CaO content being less than 5% based on the total zirconia and stabiliser content; at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 5-50% alumina; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; less than 2% impurities; and ZrO2 to make up 100%. According to the invention, the median diameter D50 of the powder is between 80 and 130 μm, the percentile D995 is less than 500 μm and the relative density of the granules is between 30% and 60%.
摘要翻译:本发明涉及一种特别用于生产陶瓷烧结部件的造粒粉末,所述粉末具有以干物质为基础的以下化学重量组成,即:选自含有Y 2 O 3,Sc 2 O 3,MgO, CaO,CeO 2及其混合物,基于总氧化锆和稳定剂含量,稳定剂的重量含量为2%至20%,MgO + CaO含量小于总氧化锆和稳定剂含量的5%; 至少1%的玻璃化转变温度低于或等于25℃的第一粘合剂; 0-4%的玻璃化转变温度大于25℃的附加粘合剂; 5-50%氧化铝; 不同于第一粘合剂和附加粘合剂的临时添加剂的0-4%,第一粘合剂,附加粘合剂和临时添加剂的总含量小于9%; 小于2%杂质; 和ZrO2组成100%。 根据本发明,粉末的中值粒径D50在80和130μm之间,百分位数D995小于500μm,颗粒的相对密度在30%和60%之间。
摘要:
The invention relates to a granulated powder intended, in particular, for the production of ceramic sintered parts, said powder having the following chemical weight composition, based on dry matter, namely: at least 1% of a first binder having a glass transition temperature less than or equal to 25° C.; 0-4% of an additional binder having a glass transition temperature greater than 25° C.; 0-4% of a temporary additive different from the first binder and the additional binder, the total content of the first binder, the additional binder and the temporary additive being less than 9%; 0-15% of an additive for sintering the ceramic material; at least 2% impurities; and the remainder comprising a ceramic material, and optionally an agent for stabilising said ceramic material, to make up 100%. According to the invention, the median diameter D50 of the powder is between 80 and 130 μm, the percentile D99.5 is less than 500 gm and the relative density of the granules is between 30% and 60%.