The present disclosure provides a metal-ceramic composite structure and a fabrication method thereof. The metal-ceramic composite structure includes a ceramic substrate having a groove on a surface thereof; a metal member filled in the groove, including a main body made of zirconium base alloy, and a reinforcing material dispersed in the main body and selected from at least one of W, Mo, Ni, Cr, stainless steel, WC, TiC, SiC, ZrC, ZrO.sub.2, BN, Si.sub.3N.sub.4, TiN and Al.sub.2O.sub.3; a luminance value L of the metal member surface is in a range of 36.92-44.07 under a LAB Chroma system.

The present disclosure provides a metal-ceramic composite structure and a fabrication method thereof. The metal-ceramic composite structure includes a ceramic substrate having a groove on a surface thereof; a metal member filled in the groove, including a main body made of zirconium base alloy, and a reinforcing material dispersed in the main body and selected from at least one of W, Mo, Ni, Cr, stainless steel, WC, TiC, SiC, ZrC, ZrO.sub.2, BN, Si.sub.3N.sub.4, TiN and Al.sub.2O.sub.3; a luminance value L of the metal member surface is in a range of 36.92-44.07 under a LAB Chroma system.

The present invention discloses a cold additive and hot forging combined forming method of amorphous alloy parts. The present invention belongs to the field of cold additive manufacturing technology and thermoplastic forming of amorphous alloy, and more particularly relates to a cold additive and hot forging combined forming method of amorphous alloy parts, the method comprising: (1) making amorphous alloy powder into a pre-forging blank by the micro-jetting and bonding 3D printing technology; and (2) placing the pre-forging blank in the step (1) in a closed forging die to perform hot closed-die forging so as to obtain an amorphous alloy part, wherein the contour size and shape of the pre-forging blank are designed according to the contour size and shape of the inner cavity of the closed forging die; and an exhaust hole is provided in the closed forging die such that gas generated by gasification or decomposition of the binder at a hot die forging temperature is discharged through the exhaust hole in the closed forging die. In the present invention, a bulk amorphous alloy part with a large size and a complex shape can be prepared by the cold additive and hot forging combined forming method.

The present invention provides a high-entropy Half-Heusler thermoelectric material with a low lattice thermal conductivity and a preparation method thereof. The general formula of the high-entropy Half-Heusler thermoelectric material with a low lattice thermal conductivity is Zr.sub.xHf.sub.1-xNi.sub.yPd.sub.1-ySn, where x is equal to 0.6 to 0.8, and y is equal to 0.8 to 0.9. The preparation method of the high-entropy Half-Heusler thermoelectric material with a low lattice thermal conductivity comprises the following steps: preparing and mixing materials according to the general formula of Zr.sub.0.7Hf.sub.0.3Ni.sub.0.85Pd.sub.0.15Sn, putting the mixed raw materials in a levitation melting for melting, grinding the obtained ingot into powder and drying it, and sintering the powder by using spark plasma sintering into a bulk high-entropy Half-Heusler thermoelectric material with a low lattice thermal conductivity. The high-entropy Half-Heusler thermoelectric material of the present invention has a relatively low lattice thermal conductivity and a relatively high ZT value.

The invention relates to a process for manufacturing a ZrNiSn-based half-Heusler thermoelectric material and regulating antisite defects therein, including the steps of: mixing zirconium (Zr), nickel (Ni), and stannum (Sn) at an atomic ratio of Zr: Ni: Sn=1:1:1; forming an ingot by melting the mixture in a levitation melting furnace; milling the ingot to form a milled powder followed by drying; sintering the dried powder by spark plasma sintering; and placing the sintered powder in a vacuum vessel to be subjected to heat treatment and then quenching treatment to obtain the ZrNiSn-based half-Heusler thermoelectric material. The process is simple, easy to control, and results in a single phase ZrNiSn-based half-Heusler thermoelectric material with antisite defects.

The invention relates to a process for manufacturing a ZrNiSn-based half-Heusler thermoelectric material and regulating antisite defects therein, including the steps of: mixing zirconium (Zr), nickel (Ni), and stannum (Sn) at an atomic ratio of Zr: Ni: Sn=1:1:1; forming an ingot by melting the mixture in a levitation melting furnace; milling the ingot to form a milled powder followed by drying; sintering the dried powder by spark plasma sintering; and placing the sintered powder in a vacuum vessel to be subjected to heat treatment and then quenching treatment to obtain the ZrNiSn-based half-Heusler thermoelectric material. The process is simple, easy to control, and results in a single phase ZrNiSn-based half-Heusler thermoelectric material with antisite defects.

This application relates to a portable electronic device. The portable electronic device includes an enclosure having a metal oxide coating, the metal oxide coating including a metal alloy substrate that is doped with a dopant, and a metal oxide layer overlaying and formed from the metal alloy substrate so that the metal oxide layer includes the dopant.

A metal alloy and includes an enhancement coating material.

A metal alloy and includes an enhancement coating material.

BMG parts having an uniform and consistently thick metal oxide layer. The metal oxide layer, also known as an interference layer, exhibits a consistent color and durability over the entire surface of the part. Methods and devices involved in forming the BMG parts with uniformly thick interference layers are also provided.