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    • 4. 发明授权
    • Method for preparation of nanometer cerium-based oxide particles
    • 纳米铈基氧化物颗粒的制备方法
    • US07025943B2
    • 2006-04-11
    • US10146824
    • 2002-05-15
    • Xiao-Dong ZhouWayne HuebnerHarlan U. Anderson
    • Xiao-Dong ZhouWayne HuebnerHarlan U. Anderson
    • C01F17/00
    • B82Y30/00C01F17/0043C01P2002/50C01P2002/52C01P2002/72C01P2004/04C01P2004/64C01P2006/12Y10T428/2982
    • The invention comprises novel undoped and doped nanometer-scale CeO2 particles as well as a novel semi-batch reactor method for directly synthesizing the novel particles at room temperature. The powders exhibited a surface area of approximately 170 m2/g with a particle size of about 3–5 nm, and are formed of single crystal particles that are of uniform size and shape. The particles' surface area could be decreased down to 5 m2/g, which corresponds to a particle size of 100 nm, by thermal annealing at temperatures up to 1000° C. Control over the particle size, size distribution and state of agglomeration could be achieved through variation of the mixing conditions such as the feeding method, stirrer rate, amount of O2 gas that is bubbled through the reactor, the temperature the reaction is carried out at, as well as heating the final product at temperatures ranging from 150° to 1000° C.
    • 本发明包括新型未掺杂和掺杂的纳米级CeO 2 N 2颗粒,以及用于在室温下直接合成新型颗粒的新型半间歇反应器方法。 粉末表现出约170m 2 / g的粒度约3-5nm的表面积,并由均匀尺寸和形状的单晶颗粒形成。 通过在高达1000℃的温度下进行热退火,可将颗粒的表面积降低至5m 2 / g,这对应于100nm的粒度。对于粒度, 尺寸分布和附聚状态可以通过改变混合条件来实现,例如进料方法,搅拌器速率,鼓泡通过反应器的O 2 N 2气体的量,进行反应的温度 并在150°-1000℃的温度范围内加热最终产品。
    • 7. 发明授权
    • Method of manufacture of multiple-element piezoelectric transducer
    • 多元素压电换能器的制造方法
    • US5359760A
    • 1994-11-01
    • US46965
    • 1993-04-16
    • Lawrence J. BusseJeffry W. StevensonWayne Huebner
    • Lawrence J. BusseJeffry W. StevensonWayne Huebner
    • B06B1/06H01L41/22H01L41/37H04R17/00
    • B06B1/0622A61B8/4483H01L41/37Y10S310/80Y10T29/42
    • An improved method for fabrication of a multiple-element piezoelectric transducer and the transducer produced thereby. A green precursor tape is produced by doctor-blade tape-casting of a slurry containing lead zirconate-titanate (PZT) powder. After drying, individual strips of the tape are stacked between flat plates of previously sintered PZT, and sintered to form PZT strips; Pb from the previously sintered PZT plates makes up any Pb lost from the surfaces of the tape strips during sintering. The PZT strips are stacked interposed by layers of a thermoplastic polymer, and heated to a temperature above the melting point of the polymer, forming a laminate block. This block is then sliced perpendicular to the plane of the layers, forming slabs of alternate PZT and polymer layers; the slabs are then sliced perpendicular to the first slicing planes, forming strips of alternating PZT and polymer material. Electrodes are then added to complete the transducer assembly.
    • 一种用于制造多元素压电换能器和由此产生的换能器的改进方法。 通过用包含锆钛酸铅(PZT)粉末的浆料的刮刀带铸造生产绿色前体胶带。 干燥后,将各条条带堆叠在先前烧结的PZT的平板之间,并烧结形成PZT条带; 来自先前烧结的PZT板的Pb构成在烧结期间从带条表面损失的任何Pb。 PZT条由热塑性聚合物层层叠,并加热到高于聚合物熔点的温度,形成层压块。 然后将该块垂直于层的平面切片,形成交替的PZT和聚合物层的板; 然后将板坯垂直于第一切割平面切片,形成交替的PZT和聚合物材料的条带。 然后添加电极以完成换能器组件。