摘要翻译:本发明提供一种电解陶瓷组合物,其可以解决涉及用于使用钨青铜型复合氧化物的致动器的常规压电陶瓷的问题,即,相对介电常数如此低(小于2000)的问题,即压电陶瓷 不适合作为层叠陶瓷电容器的电介质陶瓷材料,并且存在虽然Mn具有提高烧结度的效果的问题,但是由于随着Mn添加量的增加,比介电常数降低,所以现有的压电陶瓷当使用时 作为用于层叠陶瓷电容器的电介质陶瓷材料,存在问题。 电介质陶瓷组合物主要由组成式(K 1-y Na z)Sr 2 N 2表示的钨青铜型复合氧化物组成, Nb 5 O 15,其中0 = y <0.2,相对于主成分为100份摩尔,含有0.1〜40份摩尔的Mn为 辅助部件。
摘要:
Refractory materials are provided which contain P 2 O 5 /R 2 O 3 constituents, where R is Y, Sc, Er, Lu, Yb, Tm, Ho, Dy, Tb, Gd, or a combination thereof, and/or V 2 O 5 /R' 2 O 3 constituents where R' is Y, Sc, one or more rare earth elements, or a combination thereof. In certain embodiments, the refractory materials are xenotime-type materials and/or xenotime-stabilized zircon-type materials. The refractory materials can be used in the manufacture of glass and glass-ceramics. For example, the refractory materials, especially those that contain P 2 O 5 /R 2 O 3 constituents, can be used as forming structures ("isopipes") in the fusion process for making flat sheets of glass such as the glass sheets used as substrates in the manufacture of flat panel displays.
摘要翻译:提供了包含P 2 O 5 / R 2 O 3 3 / sub的耐火材料 其中R为Y,Sc,Er,Lu,Yb,Tm,Ho,Dy,Tb,Gd或其组合,和/或V 2 O 5, 其中R'是Y,Sc,一种或多种稀土元素,或其组合。 在某些实施方案中,耐火材料是磷钇矿型材料和/或磷钇矿稳定的锆石型材料。 耐火材料可用于制造玻璃和玻璃陶瓷。 例如,耐火材料,特别是那些含有P 2 O 5 / R 2 O 3组分的材料, 可以用作熔融工艺中的成形结构(“等静压管”),用于制造平板玻璃,例如用作平板显示器制造中的基板的玻璃板。 p>
摘要:
Dispersion of zirconium dioxide having a solids content of from 30 to 75 wt.%, based on the total amount of the dispersion, and a median value of the particle size distribution in the dispersion of less than 200 nm, obtainable by predispersing a zirconium dioxide powder and/or a zirconium mixed oxide powder having a ZrC>2 content of at least 70 wt.%, the powders being in the form of aggregated primary particles and having no internal surface and a BET surface area of the powder of 60 ± 15 m2/g, in a dispersing agent in the presence of from 0.1 to 5 wt.%, based on the total amount of the dispersion, of a surface- modifying agent with an energy input of less than 200 KJ/m3, dividing the predispersion obtained into at least two part streams, placing these part streams under a pressure of at least 500 bar in a high-energy mill and decompress them via a nozzle, these part streams colliding with one another in a gas- or liquid-filled reaction chamber and thereby being ground, and optionally subsequently adjusting the dispersion to the desired content with further dispersing agent. It can be used for the production of ceramic layers, membranes and shaped articles .
摘要翻译:基于分散体的总量,固体含量为30至75重量%的二氧化锆的分散体,以及小于200nm的分散体中的粒度分布的中值,可通过预分散二氧化锆 粉末和/或具有至少70重量%的ZrC> 2含量的锆混合氧化物粉末,粉末为聚集的一次颗粒的形式,并且没有内表面,粉末的BET表面积为60±15 m 2 / g,在分散剂中,基于分散体的总量为0.1至5重量%,具有能量输入小于200KJ / m 3的表面改性剂,将预分散体 获得至少两部分流,将这些部分物流在高能磨机中放置至少500巴的压力下,并通过喷嘴对其进行减压,这些部分物流在气体或液体填充的反应室中相互碰撞 并因此被研磨,并且可选地 随后用其它分散剂将分散体调节至所需的含量。 它可用于生产陶瓷层,膜和成型制品。
摘要:
A sintering schedule to allow the reliable formation of inorganic or ceramic materials, exemplified using porous calcium polyphosphate samples to be used for forming novel implants for bone interfacing applications. The key to the successful definition of the process was the determination of the factors affecting the crystallization temperature of the powders that are gravity sintered to form porous samples of desired density and with a pore size range suitable for the particular application. The method involves applying a sintering procedure to a packed amorphous inorganic powder which gives control over densification and includes choosing sintering temperatures and times sequentially that correspond to the inorganic material being amorphous but having a viscosity to develop significant sinter necks between adjacent powder particles by a viscous flow sintering mechanism while maintaining a desired open-pored structure, followed by a second temperature at which crystallization of the packed amorphous inorganic powder occurs and during which slower diffusion-related mechanisms control sinter neck growth and densification to give a substantially crystalline porous, inorganic structure. In addition, interpenetrating phase composites of biodegradable organic polymers throughout the porous calcium polyphosphate samples were formed and resulted in the development of novel composites with attractive strength and toughness. These materials hold promise for formation of biodegradable fracture fixation implants and degradable anchoring systems for temporary stabilization of bone-interfacing implants designed for fixation by bone ingrowth.