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    • 3. 发明申请
    • SYNTACTIC METAL MATRIX MATERIALS AND METHODS
    • 合成金属基体材料与方法
    • WO2014011267A2
    • 2014-01-16
    • PCT/US2013/035602
    • 2013-04-08
    • POWDERMET, INC.SHERMAN, Andrew, J.DOUD, Brian
    • SHERMAN, Andrew, J.DOUD, Brian
    • B22F3/1112B21D31/00B32B5/16B32B5/18B32B5/20C22C32/0036C22C32/0078C22C49/00C22C49/06C22C49/11
    • A syntactic metal foam composite that is substantially fully dense except for syntactic porosity is formed from a mixture of ceramic microballoons and matrix forming metal. The ceramic microballoons have a uniaxial crush strength and a much higher omniaxial crush strength. The mixture is continuously constrained while it is consolidated. The constraining force is less than the omniaxial crush strength. The substantially fully dense syntactic metal foam composite is then constrained and deformation worked at a substantially constant volume. The deformation working is typically performed at a yield strength that is adjusted by way of selecting a working temperature at which the yield strength is approximately less than the omniaxial crush strength of the included ceramic microballoons. This deformation causes at least work hardening and grain refinement in the matrix metal.
    • 由陶瓷微球和基体形成金属的混合物形成除了手征孔隙之外基本上完全致密的复合金属泡沫复合材料。 陶瓷微球具有单轴挤压强度和更高的全向挤压强度。 混合物在固结时不断受到限制。 约束力小于全向挤压强度。 然后基本上完全致密的复合金属泡沫复合材料被约束并以基本恒定的体积进行变形。 变形加工通常以屈服强度进行,该屈服强度通过选择屈服强度近似小于所包含的陶瓷微球的全向挤压强度的工作温度进行调整。 该变形至少导致基体金属中的加工硬化和晶粒细化。
    • 6. 发明申请
    • COMPOSITE POWDER AND METHOD OF PRODUCING COMPOSITE POWDER
    • 复合粉及复合粉生产方法
    • WO2018051104A1
    • 2018-03-22
    • PCT/GB2017/052723
    • 2017-09-14
    • METALYSIS LIMITED
    • MELLOR, IanDOUGHTY, Greg
    • B22F1/00B22F9/20C22C32/00
    • B22F9/20B22F1/0096B22F2202/15C22C32/0015C22C32/0057C22C32/0063C22C32/0068C22C32/0078C22C32/0084
    • A method of forming a powder of a composite material is provided, each composite powder particle comprising both a matrix phase and a reinforcement phase distributed within the matrix phase. The method comprises the step of forming a precursor powder (190) with an average particle size of less than 150 micrometres, each precursor powder particle comprising a matrix precursor material and a reinforcement precursor material. The matrix precursor material comprises a reducible compound comprising a first metal and oxygen. The precursor powder is reduced under conditions in which oxygen is removed from the matrix precursor material, but in which the reinforcement precursor material does not react. Thus, the matrix phase of the composite comprises the first metal, and the reinforcement phase of the composite consists of the reinforcement precursor material. A precursor powder (190) and a powder of a composite material are also provided.
    • 提供了一种形成复合材料粉末的方法,每个复合粉末颗粒包含基体相和分布在基体相内的增强相两者。 该方法包括形成平均粒度小于150微米的前体粉末(190)的步骤,每个前体粉末颗粒包含基体前体材料和增强剂前体材料。 基体前体材料包含含有第一金属和氧的可还原化合物。 在从基质前体材料中除去氧气但在其中增强剂前体材料不反应的条件下,前体粉末被还原。 因此,复合材料的基体相包含第一金属,并且复合材料的增强相由增强材料前体材料组成。 还提供前体粉末(190)和复合材料的粉末。