Porous molybdenum disilicide-based material prepared by self-propagating high temperature synthesis process, and method for preparing the same
    1.
    发明授权
    Porous molybdenum disilicide-based material prepared by self-propagating high temperature synthesis process, and method for preparing the same 失效
    通过自蔓延高温合成工艺制备的多孔二硅化钼基材料及其制备方法

    公开(公告)号:US06872374B2

    公开(公告)日:2005-03-29

    申请号:US10267210

    申请日:2002-10-09

    摘要: A porous molybdenum disilicide-based material prepared by preheating a preform consisting of size-controlled molybdenum (Mo) powder and content-controlled silicon (Si) powder and igniting the preform to initiate self-propagating high temperature synthesis, and a method for preparing the same, are disclosed. The method comprises the steps of a) mixing molybdenum (Mo) powder and silicon (Si) powder in the stoichiometric ratio of 1:2; b) molding the mixed powder into a preform; c) preheating the preform under inert atmosphere; and d) igniting the top end of the preheated perform. The porous molybdenum disilicide-based material can control its pore size by appropriately controlling the size of molybdenum (Mo) powder, the content of silicon (Si) powder and preheating condition. Therefore, since the pore size gradient of the porous material is possible to form, the porous material can be used for filters with improved dirt-holding capacity.

    摘要翻译: 通过预热由尺寸控制的钼(Mo)粉末和含量控制的硅(Si)粉末组成的预成型体并点燃预成型件以引发自蔓延的高温合成而制备的多孔二硅化钼基材料,以及制备 相同,被披露。 该方法包括以1:2的化学计量比混合钼(Mo)粉末和硅(Si)粉末的步骤; b)将混合粉末成型为预制件; c)在惰性气氛下预热预制件; 和d)点燃预热表演的顶端。 多孔二硅化钼基材料可以通过适当地控制钼(Mo)粉末的尺寸,硅(Si)粉末的含量和预热条件来控制其孔径。 因此,由于可以形成多孔材料的孔径梯度,所以多孔材料可以用于具有改善的防尘能力的过滤器。

    Method for making high volume reinforced aluminum composite by use of dipping process
    2.
    发明授权
    Method for making high volume reinforced aluminum composite by use of dipping process 有权
    使用浸渍法制造高容量增强铝复合材料的方法

    公开(公告)号:US06406516B1

    公开(公告)日:2002-06-18

    申请号:US09846414

    申请日:2001-05-01

    IPC分类号: C22C100

    摘要: Disclosed are composition and a method for making a high volume reinforced Al composite by use of a dipping process. Through the method comprising mixing 20-50 wt % of exothermic reaction-causing Ti and C or Ti and B powders, 20-60 wt % of exothermic reaction-controlling diluent powders, and 5-30 wt % of infiltration-aiding Al or Al alloy powders, then preparing mixture powders; preforming the mixture powders into a predetermined shape; fitting the preformed body in a reaction container, followed by dipping in an Al melt of 700-1,100° C.; and separating the synthesized composite from the reaction container after removal from the Al melt, a high volume reinforced Al composite can be prepared from the mixture powders through such exothermic synthesis in a metal melt that reinforced particles are uniformly distributed while restraining the generation of pores. As such, the exothermic reaction-controlling diluent powders are selected from the group consisting of TiC, TiB2, SiC, WC or mixtures thereof.

    摘要翻译: 公开了通过浸渍方法制备高体积增强Al复合材料的组合物和方法。 通过包括混合20-50重量%的放热反应的Ti和C或Ti和B粉末,20-60重量%的放热反应控制稀释剂粉末和5-30重量%的渗透助剂Al或Al 合金粉末,然后制备混合粉末; 将混合物粉末预成形为预定形状; 将预成型体装配在反应容器中,随后浸入700-1100℃的Al熔体中; 并在从Al熔体中除去后将合成的复合物从反应容器中分离出来,可以通过在金属熔体中的这种放热合成从混合物粉末制备高体积的增强的Al复合材料,其中增强的颗粒均匀分布,同时抑制孔的产生。 因此,放热反应控制稀释剂粉末选自TiC,TiB2,SiC,WC或其混合物。

    Microporous ceramic materials and the producing method of the same
    5.
    发明授权
    Microporous ceramic materials and the producing method of the same 有权
    微孔陶瓷材料及其制造方法相同

    公开(公告)号:US07008576B2

    公开(公告)日:2006-03-07

    申请号:US10462810

    申请日:2003-06-17

    IPC分类号: B28B1/00 C04B33/32

    摘要: Microporous ceramic materials used in structural materials, high-temperature filters, electrode materials or preform materials for infiltration by homogeneously mixing and molding a ceramic precursor powder polymer. The powder is saturated by introducing fluid to a pressure vessel. The fluid is super saturated by adjusting pressure in the vessel. Micropores are formed in the molded bodies by evolving the fluid from the molded bodies by heating and hardening the molded bodies. The hardened molded bodies are heated to pyrolysis. Pore characteristics (e.g., pore size and pore size distribution) suitable to target materials are controlled by adjusting pressure at a non-critical state without requiring additional processes or devices.

    摘要翻译: 用于结构材料的微孔陶瓷材料,高温过滤器,电极材料或用于通过均匀混合和模制陶瓷前体粉末聚合物而渗透的预成型材料。 通过将流体引入压力容器来使粉末饱和。 流体通过调节容器中的压力而超饱和。 通过对成型体进行加热硬化,从成形体中放出流体,在成形体中形成微孔。 将硬化的成型体加热至热解。 通过在非关键状态下调节压力来控制适合于目标材料的孔特征(例如,孔径和孔径分布),而不需要额外的工艺或装置。

    Electroplating process for preparing a Ni layer of biaxial texture
    6.
    发明授权
    Electroplating process for preparing a Ni layer of biaxial texture 失效
    用于制备双层织构Ni层的电镀工艺

    公开(公告)号:US06346181B1

    公开(公告)日:2002-02-12

    申请号:US09571821

    申请日:2000-05-16

    IPC分类号: C25D500

    摘要: Disclosed is an Ni-plated layer of biaxial texture, which is formed by electroplating. In the Ni-plated layer,peaks measured on a &thgr;-rocking curve have a FWHM of 7° or less in terms of the misorientation on the c-axis; and peaks measured on &phgr;-scan have a FWHM of 21° or less in terms of the misorientation on the plane formed by the a-axis and the b-axis. Also, a process of electroplating a Ni layer are disclosed. The process comprises forming a Ni-plated layer of biaxial texture under a magnetic field by electroplating and subjecting the Ni-plated layer to thermal treatment to develop the biaxial texture. This electroplating process is expected to give a significant contribution to the development of the electroplating technology and to replace the vacuum deposition used for the preparation of thin film magnetic materials or thin film piezoelectric materials.

    摘要翻译: 公开了通过电镀形成的双轴织构的镀镍层。 在Ni镀层中,在θ-摇摆曲线上测量的峰在c轴上的取向偏差方面的FWHM为7°以下; 以扫描方式测量的峰值在由a轴和b轴形成的平面上的取向方向上FWHM为21°以下。 此外,公开了一种电镀Ni层的工艺。 该方法包括通过电镀在磁场下形成双轴织构的Ni镀层,并对Ni镀层进行热处理以形成双轴织构。 这种电镀工艺有望为电镀技术的发展作出重大贡献,并取代了用于制备薄膜磁性材料或薄膜压电材料的真空沉积。

    Electrical discharge machinable MG-PSZ/TIB2 ceramic composite
    8.
    发明授权
    Electrical discharge machinable MG-PSZ/TIB2 ceramic composite 失效
    可放电加工的MG-PSZ / TIB2陶瓷复合材料

    公开(公告)号:US5712211A

    公开(公告)日:1998-01-27

    申请号:US647320

    申请日:1996-05-09

    IPC分类号: C04B35/488 C04B35/58

    CPC分类号: C04B35/488

    摘要: An electrical discharge machinable MgO-Partially Stabilized Zirconia (PSZ) and titanium di-boride (TiB.sub.2) ceramic composite body of good mechanical properties and the method of making it are disclosed. The ceramic composite comprising less than 40% by weight of TiB.sub.2 balanced by 10 mole % of MgO-Partially Stabilized Zirconia is fully densified by pressureless sintering at 1850.degree. C.-1900.degree. C. and exhibits the fracture toughness (K.sub.IC) value of 8-11 MPa.multidot.m.sup.1/2 measured according to the indentation crack length method and Evans-Charles' method provided in Journal of the American Ceramic Society volume 59 �7-8!, 371-372 (1976) after annealing at 1320.degree.-1400.degree. C.

    摘要翻译: 公开了具有良好机械性能的可放电加工的MgO部分稳定氧化锆(PSZ)和二硼化钛(TiB2)陶瓷复合体及其制备方法。 包含少于40%(重量)TiB 2的10%(摩尔)的MgO-部分稳定的氧化锆的陶瓷复合材料在1850℃-1900℃下通过无压烧结而完全致密化,并且断裂韧性(KIC)值为8 -11 MPaxm1 / 2,根据压痕裂纹长度法和Evans-Charles'方法,在美国陶瓷学会杂志第59卷[7-8],371-372(1976)中提出,在1320°-1400℃退火 。