A cemented carbide comprising a predetermined hard phase, a predetermined binder phase and a predetermined composite compound phase, wherein: a content ratio of each of the hard phase, the binder phase and the composite compound phase based on total contents of the hard phase, the binder phase and the composite compound phase in the cemented carbide falls within a predetermined range; and the composite compound phase comprises an aggregate containing a small-diameter aggregate which satisfies a predetermined condition and a large-diameter aggregate which satisfies a predetermined condition.

A thermally dissipative article and a method of forming a thermally dissipative article are disclosed. The thermally dissipative article includes a component, a porous material formed in a layer on the component. The method of forming a thermally dissipative article includes providing a metal powder mixture and a soluble particulate mixture which forms a porous coating upon sintering and immersion in a solvent to remove the soluble particulate.

A thermally dissipative article and a method of forming a thermally dissipative article are disclosed. The thermally dissipative article includes a component, a porous material formed in a layer on the component. The method of forming a thermally dissipative article includes providing a metal powder mixture and a soluble particulate mixture which forms a porous coating upon sintering and immersion in a solvent to remove the soluble particulate.

A hierarchical porous material consists of multistage porous materials, comprising a material body, the body is formed bar a pore cavity graded according to the pore size of the material and a cavity wall surrounding to form the pore cavity. The pore cavities are uniformly distributed. The characteristics are as follows. A lower-level pore cavities are disposed on the cavity wall of an upper-level pore cavity formed by surrounding a three-dimensional space. Each level of pore cavities are mutually connected and the pore cavities within same level are also connected with each other. The uniform distribution of the pore cavities means that similar amount of pore cavities are distributed under any unit volume of the hierarchical porous material. The hierarchical structure of the cavity of the material enables it to meet a wide range of functional requirements.

Embodiments of the present technology include metal foams and methods of manufacture. An example method of creating a porous metal foam includes mixing an amount of a metallic powder with an amount of sacrificial particles in a specified ratio to create a mixture; and applying pressure to the mixture that is sufficient to: compact the mixture; decompose or dissolve the sacrificial particles; and fuse the metallic powder into the porous metal foam.

A metal wick material with hierarchical porous structures, which comprises primary pores, secondary pores, and tertiary pores, wherein the pore sizes of the primary pores are greater than those of the secondary pores and the pore sizes of the secondary pores are greater than those of the tertiary pores; the primary pores are obtained by 3D printing, the secondary pores are obtained by volatilizing a binder during a water bath heating process; and the tertiary pores are obtained by forming pores by diffusion and connection among metal powder particles during sintering. A method for fabricating the metal wick material having hierarchical porous structure, comprising: fabricating ordered primary pores having a three-dimensional network structure by a new-type powder extrusion 3D printing process; and then forming secondary pores and tertiary pores inside a macroporous framework by using subsequent treatment processes such as water bath heating and sintering, thus constructing a three-stage pore material.

A soft magnetic molded body, in which a binder component is used to bind a soft magnetic metal powder that has a flat shape, includes 60% by volume or more of the soft magnetic metal powder and 10-30% by volume of fine open pores. The binder component includes an inorganic oxide as a main component.