ALUMINUM BORON CARBIDE COMPOSITE AND METHOD TO FORM SAID COMPOSITE
    44.
    发明申请
    ALUMINUM BORON CARBIDE COMPOSITE AND METHOD TO FORM SAID COMPOSITE 有权
    碳酸钡复合材料和形成复合材料的方法

    公开(公告)号:US20110312484A1

    公开(公告)日:2011-12-22

    申请号:US13223337

    申请日:2011-09-01

    IPC分类号: C04B35/563

    摘要: An improved aluminum-boron carbide (ABC) composite has been discovered that is comprised of a continuous network of AlB24C4 and boron carbide grains having therein other isolated aluminum-boron carbide reactive phases and at most 2% by volume of isolated metal. The improved ABC composite may be formed by forming boron carbide particulates into a porous body that has a porosity of at most about 35%, where the boron particulates have been heat treated to a temperature of 1200° C. to 1800° C., infiltrating the porous body with aluminum or aluminum alloy until an infiltrated aluminum-boron carbide body is formed that has at most about 1% porosity, heat treating the infiltrated body for at least 25 hours at 1000° C. to 1100° C. to form an aluminum boron carbide composite having a continuous network of AlB24C4 and boron carbide, and subsequently heat-treating to 700° C. to 900° C. to form the improved aluminum boron carbide composite.

    摘要翻译: 已经发现了一种改进的碳化铝 - 碳化硼(ABC)复合材料,其由AlB24C4和碳化硼晶粒的连续网络组成,其中具有其它隔离的铝 - 碳化硼反应相和至多2体积%的隔离金属。 改进的ABC复合材料可以通过将碳化硼颗粒形成多孔体而形成,所述多孔体具有至多约35%的孔隙率,其中硼微粒被热处理至1200℃至1800℃,渗透 具有铝或铝合金的多孔体,直到形成渗透的铝 - 碳化硼体,其具有至多约1%的孔隙率,在1000℃至1100℃下将渗透体热处理至少25小时,以形成 铝碳化硼复合材料,其具有AlB24C4和碳化硼的连续网络,并随后热处理至700℃至900℃以形成改进的碳化硼复合材料。

    Concrete and process to make same
    47.
    发明授权
    Concrete and process to make same 失效
    具体和过程做相同

    公开(公告)号:US06649671B2

    公开(公告)日:2003-11-18

    申请号:US09804112

    申请日:2001-03-12

    IPC分类号: C08L8300

    摘要: A concrete article is prepared by mixing concrete, water and a reinforcing polymer comprised of a substantially random interpolymer of at least one &agr;-olefin, with at least one vinyl or vinylidene aromatic monomer and curing said concrete mixture to form a concrete article having the reinforcing polymer therein, such that the reinforcing polymer has a surface comprised of the substantially random interpolymer in contact with the concrete.

    摘要翻译: 通过将混凝土,水和由至少一种α-烯烃的基本上无规的互聚物组成的增强聚合物与至少一种乙烯基或亚乙烯基芳族单体混合并固化所述混凝土混合物以形成具有增强的混凝土制品来制备混凝土制品 聚合物,使得增强聚合物具有由与混凝土接触的基本上无规的互聚物构成的表面。

    Ceramic-metal composite and method to form said composite
    48.
    发明授权
    Ceramic-metal composite and method to form said composite 失效
    陶瓷 - 金属复合材料和形成所述复合材料的方法

    公开(公告)号:US06630247B1

    公开(公告)日:2003-10-07

    申请号:US09921810

    申请日:2001-08-03

    IPC分类号: C22C2100

    摘要: A ceramic-metal composite that is tough and stiff has been prepared and is comprised of an inert ceramic (e.g., alumina) embedded and dispersed in a matrix comprised of a metal (e.g., aluminum), a reactive ceramic (e.g., boron carbide) and a reactive ceramic-metal reaction product (e.g., AlB2, Al4BC, Al3B48C2, AlB12, Al4C3, AlB24C4 or mixtures thereof) wherein grains of the inert ceramic have an average grain size greater than or equal to the average grain size of grains of the reactive ceramic. The ceramic-metal composite may be prepared by forming a mixture comprised of an inert ceramic powder (e.g., alumina) and a reactive ceramic powder (e.g., boron carbide), the inert ceramic powder having an average particle size equal to or greater than the average particle size of the reactive ceramic powder, forming the mixture into a porous body and consolidating the porous body in the presence of a metal (e.g., aluminum) to form the ceramic-metal composite.

    摘要翻译: 已经制备了韧性和刚性的陶瓷 - 金属复合材料,其包括嵌入和分散在由金属(例如铝),反应性陶瓷(例如碳化硼)组成的基体中的惰性陶瓷(例如氧化铝) 和反应性陶瓷 - 金属反应产物(例如,AlB2,Al4BC,Al3B48C2,AlB12,Al4C3,AlB24C4或其混合物),其中惰性陶瓷的晶粒的平均晶粒尺寸大于或等于晶粒的平均晶粒尺寸 活性陶瓷。 陶瓷 - 金属复合材料可以通过形成由惰性陶瓷粉末(例如氧化铝)和反应性陶瓷粉末(例如碳化硼)组成的混合物来制备,惰性陶瓷粉末的平均粒度等于或大于 反应性陶瓷粉末的平均粒度,将混合物形成多孔体,并在金属(例如铝)的存在下固化多孔体以形成陶瓷 - 金属复合材料。

    Brake or clutch components having a ceramic-metal composite friction material
    49.
    发明授权
    Brake or clutch components having a ceramic-metal composite friction material 有权
    具有陶瓷 - 金属复合摩擦材料的制动器或离合器部件

    公开(公告)号:US06458466B1

    公开(公告)日:2002-10-01

    申请号:US09402988

    申请日:2000-01-11

    IPC分类号: B32B1504

    摘要: A braking component such as a brake pad, brake rotor, brake drum or clutch disk is comprised of a metal substrate having a friction material laminated on at least a portion of at least one face of the metal substrate, the friction material being a ceramic-metal composite comprised of a metal phase and a ceramic phase dispersed within each other, wherein the ceramic phase is present in an amount of at least about 20 percent by volume of the ceramic-metal composite. In particular, the braking component is a metal substrate, such as aluminum, having laminated thereto a ceramic-metal composite of a dense boron carbide-aluminum composite having high specific heat and low density.

    摘要翻译: 刹车片,制动转子,制动鼓或离合器盘等制动部件由在金属基材的至少一个面的至少一部分层叠有摩擦材料的金属基材构成,摩擦材料为陶瓷 - 金属复合物由相互分散的金属相和陶瓷相组成,其中陶瓷相的存在量为陶瓷 - 金属复合材料的至少约20体积%。 特别地,制动部件是金属基材,例如铝,其上层叠有具有高比热和低密度的致密碳化硼 - 铝复合材料的陶瓷 - 金属复合物。

    Method of controlling infiltration of complex-shaped ceramic-metal composite articles and the products produced thereby
    50.
    发明授权
    Method of controlling infiltration of complex-shaped ceramic-metal composite articles and the products produced thereby 有权
    控制复合陶瓷 - 金属复合制品渗透的方法及由此产生的产品

    公开(公告)号:US06200526B1

    公开(公告)日:2001-03-13

    申请号:US09297968

    申请日:1999-05-11

    IPC分类号: B22F326

    摘要: A process for preparing complex-shaped, ceramic-metal composite articles, comprising: (a) contacting a non-wettable powder that is non-wetting to a metal to be used for infiltration with a shaped ceramic body to form a layer of the non-wettable powder on one or more surfaces of the shaped ceramic body, wherein the shaped ceramic body has a region where there is no layer of the non-wettable powder, and (b) infiltration the shaped ceramic body with the metal through the region or regions where there is no layer of the non-wettable powder, such that a complex-shaped ceramic-metal composite comprising one or more metal phases and one or more ceramic phases is formed, wherein the article has substantially the net shape of the shaped ceramic body and undesirable regions of excess metal on the surface and undesirable phases within the complex-shaped ceramic-metal composite article near the surface are located only in the region or regions where there is no layer of the non-wettable powder. The process of the invention allows the preparation of complex-shaped ceramic-metal composite articles with undesirable regions of excess metal and undesirable phases on the surface(s), of, or within, the article only in the regions where there is, or was, no layer of non-wettable powder. The process of the invention allows the preparation of a complex-shaped ceramic-metal composite article which requires little or no machining of the surface(s) to achieve a finished article. A complex-shaped ceramic-metal composite article is prepared which contains few undesirable regions of excess metal and undesirable phases.

    摘要翻译: 一种制备复杂形状的陶瓷 - 金属复合制品的方法,包括:(a)将不湿润的非可润湿粉末与用于渗透的金属与成形陶瓷体接触以形成非 - 在成形陶瓷体的一个或多个表面上的可润湿粉末,其中成形陶瓷体具有不存在不可湿性粉末层的区域,(b)使成形陶瓷体与金属渗透穿过该区域或 没有不可湿粉末层的区域,使得形成包含一个或多个金属相和一个或多个陶瓷相的复合形状的陶瓷 - 金属复合材料,其中制品具有基本上成形陶瓷的净形状 表面上的多余金属的主体和不期望的区域以及表面附近的复合陶瓷 - 金属复合制品内的不期望的相位仅位于不具有不可湿性粉末层的区域或区域中。 本发明的方法允许制备复合形状的陶瓷 - 金属复合制品,其具有不需要的过量金属区域和不期望的相,仅在制品的表面上或内部存在, ,无层不可湿粉。 本发明的方法允许制备复杂形状的陶瓷 - 金属复合制品,其需要很少或不需要加工表面以实现最终制品。 制备复杂形状的陶瓷 - 金属复合制品,其包含少量不需要的过量金属和不期望的相的区域。