A mobile electronic device is provided. The mobile electronic device includes a first component, a second component, a first space arranged to accommodate the first component, a second space arranged adjacent to the first space to accommodate the second component and communicate with outside of the mobile electronic device in a first direction, and having a side opened in a second direction perpendicular to the first direction, a housing comprising an isolation part for isolating the first space and the second space, and a sealing member arranged on the opened side of the second space. The isolation part includes a first isolation part formed of a metal material and a second isolation part coupled to the first isolation part and formed of an injection material.

An aluminum-silicon carbide composite including flat-plate-shaped composited portion containing silicon carbide and an aluminum alloy, and aluminum layers containing an aluminum alloy provided on both plate surfaces of composited portion, wherein circuit board is mounted on one plate surface and the other plate surface is used as heat-dissipating surface, wherein: the heat-dissipating-surface-side plate surface of the composited portion has a convex curved shape; the heat-dissipating-surface-side aluminum layer has a convex curved shape; ratio (Ax/B) between the average (Ax) of the thicknesses at the centers on opposing short sides of outer peripheral surfaces and thickness (B) at central portions of the plate surfaces satisfies the relationship: 0.91≤Ax/B≤1.00; and a ratio (Ay/B) between the average (Ay) of the thicknesses at the centers on opposing long sides of outer peripheral surfaces and thickness (B) at central portions of the plate surfaces satisfies the relationship: 0.94≤Ay/B≤1.00 and production method therefor.

An aluminum-silicon carbide composite including flat-plate-shaped composited portion containing silicon carbide and an aluminum alloy, and aluminum layers containing an aluminum alloy provided on both plate surfaces of composited portion, wherein circuit board is mounted on one plate surface and the other plate surface is used as heat-dissipating surface, wherein: the heat-dissipating-surface-side plate surface of the composited portion has a convex curved shape; the heat-dissipating-surface-side aluminum layer has a convex curved shape; ratio (Ax/B) between the average (Ax) of the thicknesses at the centers on opposing short sides of outer peripheral surfaces and thickness (B) at central portions of the plate surfaces satisfies the relationship: 0.91≤Ax/B≤1.00; and a ratio (Ay/B) between the average (Ay) of the thicknesses at the centers on opposing long sides of outer peripheral surfaces and thickness (B) at central portions of the plate surfaces satisfies the relationship: 0.94≤Ay/B≤1.00 and production method therefor.

A method of forming a casting with a flow passage may include forming a core obtained by filling a tubular pipe with a filler; inserting the core into a mold having a cavity corresponding to a shape of the casting to be formed; performing a casting process by injecting molten metal into the cavity; and removing the filler from the core, wherein the casting process is performed through a high-pressure casting process.

A method of forming a casting with a flow passage may include forming a core obtained by filling a tubular pipe with a filler; inserting the core into a mold having a cavity corresponding to a shape of the casting to be formed; performing a casting process by injecting molten metal into the cavity; and removing the filler from the core, wherein the casting process is performed through a high-pressure casting process.

A composite structure includes a passivated substrate, a sealing layer, a conductive layer, and a coating layer. The passivated substrate includes a substrate body made of a metallic material that is magnesium or magnesium alloy, and a porous passivation layer which is disposed on the substrate body, and which is made of an oxide of the metallic material. The sealing layer is disposed on the porous passivation layer, and is made of a sealing material. The conductive layer is disposed on the sealing layer, and is made of an electrically conductive material. The coating layer covers the conductive layer, and includes an electrophoretic material and/or a metal. A method of making the composite structure is also disclosed.

A composite structure includes a passivated substrate, a sealing layer, a conductive layer, and a coating layer. The passivated substrate includes a substrate body made of a metallic material that is magnesium or magnesium alloy, and a porous passivation layer which is disposed on the substrate body, and which is made of an oxide of the metallic material. The sealing layer is disposed on the porous passivation layer, and is made of a sealing material. The conductive layer is disposed on the sealing layer, and is made of an electrically conductive material. The coating layer covers the conductive layer, and includes an electrophoretic material and/or a metal. A method of making the composite structure is also disclosed.

A vehicle frame structure capable of achieving light weight, improving structural rigidity, and providing a good casting and forming effect is provided. The vehicle frame structure includes a pair of side portions and a connecting portion. The pair of side portions extends in a vehicle front-rear direction and is mounted on a vehicle body. The connecting portion is arranged as an elongated structure having a pair of long sides and is connected between the pair of side portions. The pair of side portions and the connecting portion are integrally formed by casting through injecting of molten metal from one side of the pair of long sides of the connecting portion. The connecting portion has a film surface connecting the pair of side portions and has a plurality of elongated holes extending radially from the center of the film surface towards the other side of the pair of long sides.

A vehicle frame structure capable of achieving light weight, improving structural rigidity, and providing a good casting and forming effect is provided. The vehicle frame structure includes a pair of side portions and a connecting portion. The pair of side portions extends in a vehicle front-rear direction and is mounted on a vehicle body. The connecting portion is arranged as an elongated structure having a pair of long sides and is connected between the pair of side portions. The pair of side portions and the connecting portion are integrally formed by casting through injecting of molten metal from one side of the pair of long sides of the connecting portion. The connecting portion has a film surface connecting the pair of side portions and has a plurality of elongated holes extending radially from the center of the film surface towards the other side of the pair of long sides.

A gas turbine engine according to an example of the present disclosure includes, among other things, a rotor and a vane spaced axially from the rotor, and a blade outer air seal spaced radially from the rotor. At least one of the rotor and the vane includes an airfoil section extending from a platform. At least one of the airfoil section, the platform and the blade outer air seal includes a first cavity extending in a first direction, the first cavity defining a reference plane along a parting line formed by a casting die, and a plurality of trip strips including a first set of trip strips distributed in the first direction along a surface of the first cavity and on a first side of the reference plane, each of the plurality of trip strips defining a respective groove axis extending longitudinally between a first end and an opposed, second end of a respective one the plurality of trip strips, and the groove axes being oriented with respect to a pull direction of the casting die. A casting core and method for fabricating a gas turbine engine component is also disclosed.