Provided is a method of manufacturing a heat exchanger by diffusion bonding in which deformation of bonding members as stainless steel plates is suppressed, and releasability (detachability of a bonding member from a release member) after diffusion bonding treatment is excellent. Provided is a method of manufacturing a heat exchanger, the method including layering a plurality of bonding members 1 made of stainless steel, and applying heat and pressure to effect diffusion bonding of the bonding members 1, in which release members 3 are arranged on the both surface sides of the bonding members 1, and holding jigs 4 are arranged so as to sandwich the bonding members 1 through the release members 3, and pressing is then performed through the holding jigs 4 with a pressure device, and in which the diffusion bonding is performed using a combination of the release members 3 and the bonding members 1, the release members 3 including a steel material containing 1.5 mass % or more of Si, and a ratio (Fr/Fp) of the high-temperature strength (Fr) of the release members 3 at 1000 C. to the high-temperature strength (Fp) of the bonding members 1 at 1000 C. being 0.9 or more.

The invention provides a heat exchange element comprising a substrate and a coating, wherein the coating is present on at least a part of a flow path defined by the heat exchange element. The coating comprises a metal and has a structure comprising spikes having a length of up to 100 m; the average length of the spikes various throughout the coating. The invention also provides a method of transferring heat to or from a fluid which comprises providing the fluid to a flow path of the heat exchange element of the invention. The invention further provides a process for producing a heat exchange element of the invention, wherein the process comprises providing an electroless deposition solution to a surface of a substrate. The invention further provides a flow process for producing a heat exchange element and a heat exchange element obtained or obtainable by that process.

Disclosed is a heat spreader. The heat spreader comprises a copper substrate layer, and at least one layer of graphene deposited on the copper substrate layer.

A thermal interface member configured to be disposed between a heat sink and a heat-releasing device includes a thermal interface member. The thermal interface member has a thermally conductive, cure-in-place, polymer foam pad configured to maintain uniform contact with each of the heat sink and the heat-releasing device. The thermal interface member is additionally configured to absorb the thermal energy released by the heat-releasing device and direct the released thermal energy to the heat sink. The polymer foam pad has a matrix structure including at least one of anisotropic and isotropic thermally conductive anisotropic filler material, and is characterized by foam material density below 0.5 g/cm.sup.3.

A stacked semiconductor microcooler includes a first and second semiconductor microcooler. Each mircocooler includes silicon fins extending from a silicon substrate. A metal layer may be formed upon the fins. The microcoolers may be positioned such that the fins of each microcooler are aligned. One or more microcoolers may be thermally connected to a surface of a coolant conduit that is thermally connected to an electronic device heat generating device, such as an integrated circuit (IC) chip, or the like. Heat from the electronic device heat generating device may transfer to the one or more microcoolers. A flow of cooled liquid may be introduced through the conduit and heat from the one or more microcoolers may transfer to the liquid coolant.

The present application discloses two-phase cooling devices that may include at least three substrates: a metal with a wicking structure, an intermediate substrate and a backplane. The titanium thermal module may be adapted for use in a mobile device, such as a portable device or smartphone, where it may offer compelling performance advantages. The thermal module may also have a metal layer which may act as a shield for radiation or an antenna for radiation, or may add mechanical strength to the thermal module.

Provided are an aluminum alloy brazing sheet for heat exchangers, which exhibits excellent formability and brazeability, and an advantageous process for producing the same. The aluminum alloy brazing sheet for heat exchangers according to the present invention is configured such that: the aluminum alloy composition of a core material and the aluminum alloy composition and temper of a filler material are respectively controlled; and a core material portion of the brazing sheet has a specific electric resistivity at room temperature and a specific dispersion ratio of second phase particles. The brazing sheet is configured to further exhibit certain properties in terms of a work hardening exponent (n-value) where a nominal strain is within a range of 1%-2% and in terms of a push-in depth when a penetration crack is generated in a punch stretch forming test using a round-head punch having a diameter of 50 mm.

Provided is an aluminum alloy clad material including an aluminum alloy core material and a first brazing filler metal that is clad on one surface or both surfaces of the core material, wherein the core material and the first brazing filler metal each include an aluminum alloy having a predetermined composition, the existence density of AlMn based intermetallic compounds having a circle-equivalent diameter of at least 0.1 m in the first brazing filler metal before brazing heating is at least 1.010.sup.5 pieces/mm.sup.2, and the existence density of AlMn based intermetallic compounds having a circle-equivalent diameter of at least 2 m in the first brazing filler metal after brazing heating is at least 300 pieces/mm.sup.2. Further provided are a method for producing the aluminum alloy clad material and a heat exchanger employing the aluminum alloy clad material.

A manufacturing method of middle member structure includes steps of applying an external force to a plate body to shape the plate body and form multiple recessed/raised structures and perforating the plate body to form multiple perforations misaligned from the recessed/raised structures so as to achieve a plate body with recessed/raised structures. The middle member structure is applicable to a vapor chamber to enhance the vapor-liquid circulation effect and the support for the internal chamber.

The invention relates to a brazable three-layered aluminium composite material having at least three layers with at least two different aluminium alloys, whereby an inner layer of the at least three layers is an aluminium brazing layer made from an aluminium brazing alloy, the other layers are configured as covering layers and include at least one further aluminium alloy, wherein the at least one further aluminium alloy has a higher solidus temperature than the liquidus temperature of the aluminium brazing alloy. The individual covering layers have a thickness which exceeds the thickness of the aluminium brazing layer by at least a factor of 1.5, preferably by a factor of 5. The brazable aluminium composite material is simply structured, has good brazing properties for the production of butt-joint brazing connections, significantly reduces the risk of a burning through of brazed-on components and provides sufficient mechanical properties.