Abstract: 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.

Abstract: A multilayer composite is provided. The composite may include a plurality of metallic glass layers interleaved with a plurality of polymer layers. The composite may have a thickness of up to 100 microns. The composite may have a fatigue strength of at least 1.5 times of the fatigue strength of a monolithic metallic glass having the same thickness as the composite and the same chemical composition as the metallic glass layer.

Abstract: A method of manufacturing a housing of an electronic device includes applying a mask to a portion of a ceramic green body to define a masked portion and an unmasked portion, applying a pigment to the ceramic green body to color the unmasked portion, and sintering the ceramic green body to remove the mask and form a ceramic housing. The ceramic housing may comprise a first portion corresponding to the masked portion and having a first color, and a second portion corresponding to the unmasked portion and having a second color different from the first color.

Abstract: 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.

Abstract: A housing for a portable electronic device is disclosed. The housing is composed of yttria-sensitized zirconia. Yttria-sensitized zirconia has from about 1.5 to about 2.5 mole percent yttria, and more typically about 2 mole percent yttria, and most typically 2 mole percent yttria, in zirconia. Yttria-sensitized zirconia is both tough and able to limit the formation and propagation of micro-cracks. Methods for manufacturing yttria-sensitized zirconia composed housings are also disclosed.

Abstract: A method of manufacturing a housing of an electronic device includes determining a sintering profile configured to produce a selected color at a selected depth within a wall of the housing, sintering a ceramic housing precursor in accordance with the determined sintering profile, thereby forming the housing, and removing material from the housing up to the selected depth.

Abstract: Methods of forming a bulk metallic glass disclosed. The methods include packing a metallic glass-forming alloy powder to form a green body; heating the green body to a temperature between the glass transition temperature and the melting point of the metallic glass-forming alloy to form a heated green body; and cooling the heated green body to a temperature below the glass transition temperature of the metallic glass-forming alloy to form the bulk metallic glass. The methods of forming a bulk metallic glass also include packing one or more layers of an amorphous foil to form a green body; heating the green body to a temperature between the glass transition temperature and the melting point of the metallic glass-forming alloy to form a heated green body; and cooling the heated green body to a temperature below the glass transition temperature of the metallic glass-forming alloy to form the bulk metallic glass.

Abstract: A housing for a portable electronic device is disclosed. The housing is composed of yttria-sensitized zirconia. Yttria-sensitized zirconia has from about 1.5 to about 2.5 mole percent yttria, and more typically about 2 mole percent yttria, and most typically 2 mole percent yttria, in zirconia. Yttria-sensitized zirconia is both tough and able to limit the formation and propagation of micro-cracks. Methods for manufacturing yttria-sensitized zirconia composed housings are also disclosed.

Abstract: A housing for a portable electronic device is disclosed. The housing is composed of yttria-sensitized zirconia. Yttria-sensitized zirconia has from about 1.5 to about 2.5 mole percent yttria, and more typically about 2 mole percent yttria, and most typically 2 mole percent yttria, in zirconia. Yttria-sensitized zirconia is both tough and able to limit the formation and propagation of micro-cracks. Methods for manufacturing yttria-sensitized zirconia composed housings are also disclosed.

Abstract: A method of manufacturing a housing of an electronic device includes determining a sintering profile configured to produce a selected color at a selected depth within a wall of the housing, sintering a ceramic housing precursor in accordance with the determined sintering profile, thereby forming the housing, and removing material from the housing up to the selected depth.

Abstract: The disclosure is directed to Zr and Hf bearing alloys that are capable of forming a metallic glass, and more particularly metallic glass rods with diameters at least 1 mm and as large as 5 mm or larger. The disclosure is further directed to Zr and Hf bearing alloys that demonstrate a favorable combination of glass forming ability, strength, toughness, bending ductility, and/or corrosion resistance.

Abstract: A method of manufacturing a housing of an electronic device includes determining a sintering profile configured to produce a selected color at a selected depth within a wall of the housing, sintering a ceramic housing precursor in accordance with the determined sintering profile, thereby forming the housing, and removing material from the housing up to the selected depth.

Abstract: A multilayer composite is provided. The composite may include a plurality of metallic glass layers interleaved with a plurality of polymer layers. The composite may have a thickness of up to 100 microns. The composite may have a fatigue strength of at least 1.5 times of the fatigue strength of a monolithic metallic glass having the same thickness as the composite and the same chemical composition as the metallic glass layer.

Abstract: Various embodiments provide apparatus and methods for melting materials and for containing the molten materials within melt zone during melting. Exemplary apparatus may include a vessel configured to receive a material for melting therein; a load induction coil positioned adjacent to the vessel to melt the material therein; and a containment induction coil positioned in line with the load induction coil. The material in the vessel can be heated by operating the load induction coil at a first RF frequency to form a molten material. The containment induction coil can be operated at a second RF frequency to contain the molten material within the load induction coil. Once the desired temperature is achieved and maintained for the molten material, operation of the containment induction coil can be stopped and the molten material can be ejected from the vessel into a mold through an ejection path.

Abstract: Described herein are methods of constructing a part having improved properties using metallic glass alloys, layer by layer. In accordance with certain aspects, a layer of metallic glass-forming powder is deposited to selected positions and then fused to a surface layer (i.e. layer below) by suitable methods such as laser heating or electron beam heating. The deposition and fusing are then repeated as need to construct the part, layer by layer. In certain embodiments, one or more sections or layers of non-metallic glass-forming material can be included as needed to form a composite final part. In certain aspects, the metallic glass-forming powder may be crystalized during depositing and fusing, or may be recrystallized during subsequent processing to provide selectively crystalized sections or layers, e.g., to impart desired functionality. In other aspects, non-metallic glass-forming materials may be deposited and fused at selected positions, e.g.

Abstract: Embodiments relates to a hook side fastener having hooks and a loop side fastener having loops. The hooks and/or loops are made of bulk solidifying amorphous metal alloy. Other embodiments relate to methods of making and using the hook side and loop side fasteners.

Abstract: One embodiment provides an article, comprising: an inner container having a cavity, the inner container comprising a ceramic; and an outer container, the outer container comprising a susceptor; wherein at least a portion of an outer surface of the inner container is in contact with an inner surface of the outer container, and wherein the inner container is removable from the mold. Methods of melting using the present article are also provided.

Abstract: Disclosed is an improved bulk metallic glass alloy and methods of making the alloy in which the alloy has the structure ZraNbbCucNidAle, wherein a-e represent the atomic percentage of each respective element, and wherein b/a is less than about 0.040, and c/d is less than 1.15. The bulk metallic glass alloy has improved thermal stability and an increased super cooled liquid region rendering it capable of being thermoplastically formed into a variety of shapes and sizes.

Abstract: Described herein are methods of constructing a part using metallic glass alloys, layer by layer, as well as metallic glass-forming materials designed for use therewith. Metallic glass meshes, metallic glass actuators, three dimensional metallic glass thermal history sensors, and methods of their manufacture are also disclosed.

Abstract: Embodiments herein relate to methods and apparatuses for casting of BMG-containing parts. The surfaces of the mold that come into contact with the molten amorphous alloy comprise an amorphous material. In accordance with the disclosure, the mold may be coated with an amorphous material, e.g., to reduce, minimize, or eliminate crystallization of the molded BMG-containing part. The surfaces of the mold are coated, in certain aspects, so as to reduce or eliminate potential grain-boundary nucleation sites for BMG crystallization. The amorphous material may be selected based on the particular molten amorphous alloy to be cast, e.g., based on the wetting properties, the melting and cooling properties, etc.