Powder comprising stabilized zirconia granules and a binder having Tg of 25C or lower
    4.
    发明授权
    Powder comprising stabilized zirconia granules and a binder having Tg of 25C or lower 有权
    包含稳定的氧化锆颗粒和Tg为25℃或更低的粘合剂的粉末

    公开(公告)号:US09193630B2

    公开(公告)日:2015-11-24

    申请号:US13518565

    申请日:2010-12-21

    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。

    POWDER COMPRISING ZIRCONIA GRANULES
    9.
    发明申请
    POWDER COMPRISING ZIRCONIA GRANULES 有权
    包含ZIRCONIA颗粒的粉末

    公开(公告)号:US20120326361A1

    公开(公告)日:2012-12-27

    申请号:US13518565

    申请日:2010-12-21

    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。