Abstract: A heat pipe (10) includes a hollow pipe body (20) for receiving a working fluid therein and a screen mesh (30) disposed in the pipe body. The screen mesh includes at least two layers. One of the two layers is in the form of a planar layer (50) and the other is in the form of a wave layer (40). A plurality of flowing channels (48) is formed by the wave layer. The channels formed by the wave layer of the screen mesh are capable of reducing the flow resistance for the condensed fluid to flow back while pores in the screen mesh provide a relatively large capillary pressure for drawing the condensed fluid to flow back.

Abstract: A heat pipe (10) includes a pipe body (20) having an inner wall (22) and a screen mesh (30) disposed on the inner wall of the pipe body. The screen mesh is in the form of a multi-layer structure with at least one layer thereof having an average pore size different from that of the other layers. The layer with large-sized pores is capable of reducing the flow resistance to the condensed fluid to flow back, whereas the layer with small-size pores is capable of providing a relatively large capillary pressure for drawing the condensed fluid from the condensing section to the evaporating section.

Abstract: A heat pipe (10) includes a casing (12) and a sintered powder wick (14) arranged at an inner surface of the casing. The sintered powder wick is in the form of a multi-layer structure of at least three layers and each layer has an average powder size different from that of the other layers, wherein the layer (143) with large-sized powders is capable of reducing the flow resistance to the condensed liquid to flow back while the layer (141) with small-sized powders is still capable of providing a relatively large capillary force for the wick.

Abstract: A heat pipe (10) includes a pipe body (30) filled with working fluid, a screen mesh (50) located in the pipe body, a porous support member (70) supporting the screen mesh to contact with an inner wall (32) of the pipe body.

Abstract: A method of making a fluid dynamic bearing (10) includes the flowing steps. At least two bearing parts (10a, 10b) are firstly provided. Each of the bearing parts has its shape corresponding to a portion of the fluid dynamic bearing to be formed. Then, the bearing parts are combined to form a profile of the fluid dynamic bearing to be formed. Finally, the combined bearing parts are sintered to form an integral body. The fluid dynamic bearing is thus obtained.

Abstract: A method for combining two components together includes the following steps: a) surface treating the two components; b) placing them within a heating apparatus while they contact with each other, a force being applied to the two components to push then against each other on the contacting surfaces thereof; c) heating the two components to a predetermined temperature which is hold for a predetermined period time to cause the two components to diffuse at the contacting interface to thereby combine the two components together; d) cooling the combined two components and taking them out of the heating apparatus.

Abstract: A bearing system includes a bearing, a shaft extending in the bearing, and a layer of nano-structured coating coated on one of the bearing and the shaft. A space is formed between the bearing and the shaft, and a lubricant is filled in the space. The lubricant is made of polymer material with hydrophilic and hydropholic properties. The nano-structured coating has a high surface tension which results in the coating being capable of adsorbing the lubricant to form a layer of lubricant film between the coating and the other of the bearing and the shaft, thereby reducing possibility of direct contact between the lubricant and the other of the shaft and the bearing. Thus, loss of the lubricant is reduced to avoid contacting frication between the shaft and the bearing. Accordingly, noise generated by the bearing system is decreased and life of the bearing system is extended.

Abstract: A method for making a package structure with a cavity comprises the following steps: (a) providing a chip having a circuit disposed thereon and a plurality of first bonding pads disposed around the circuit; (b) providing a multi-layer ceramic substrate having a cave formed thereon and a plurality of second bonding pads disposed around the cave, wherein the cave and the plurality of second bonding pads are respectively corresponding to the circuit and the plurality of first bonding pads; (c) applying an adhesive layer to the surface of the substrate with the cave and the second pads exposed from the adhesive layer; (d) tightly bonding the chip and the multi-layer ceramic substrate together such that the circuit of the chip is corresponding to the cave of the multi-layer ceramic substrate so as to form a cavity, and then electrically connecting the plurality of first bonding pads with the plurality of second bonding pads.

Abstract: A package structure with a cavity comprises a chip, a multi-layer ceramic substrate, and an adhesive layer. The chip has a circuit disposed thereon and a plurality of first bonding pads disposed around the circuit, and the multi-layer ceramic substrate has a cave formed thereon and a plurality of second bonding pads disposed around the cave wherein the cave and the plurality of second bonding pads are corresponding to the circuit and the plurality of first bonding pads, respectively. The adhesive layer is applied to the surface of the substrate, with the cave and the second pads exposed from the adhesive layer, for tightly bonding the chip and the multi-layer ceramic substrate together such that the circuit of the chip is corresponding to the cave of the multi-layer ceramic substrate so as to form a cavity.

Abstract: The invention relates to a product (1), particularly a gas turbine blade that can be exposed to a hot aggressive gas (7). The product (1) has a metallic basic body (2), which is provided with a thermal barrier coating (4) having a spinel of the composition AB2O4.

Abstract: An article that is particularly well suited for use as a gas turbine engine component has a metallic substrate and a ceramic thermal barrier layer including a mixed metal oxide system comprising a compound selected from the group consisting of (i) a lanthanum aluminate and (ii) a calcium zirconate, the calcium in which is partially replaced by at least one calcium-substitute element, such as strontium (Sr) or barium (Ba). In addition, the lanthanum in the lanthanum aluminate can be partially replaced by a lanthanum-substitute element from the lanthanide group, particularly gadolinium (Gd). A process for producing such an article comprises providing a pre-reacted mixed metal oxide system as described above and applying it to the substrate by plasma spraying or an evaporation coating process.

Abstract: An article that is particularly well suited for use as a gas turbine engine component has a metallic substrate and a ceramic thermal barrier layer including a mixed metal oxide system comprising a compound selected from the group consisting of (i) a lanthanum aluminate and (ii) a calcium zirconate, the calcium in which is partially replaced by at least one calcium-substitute element, such as strontium (Sr) or barium (Ba). In addition, the lanthanum in the lanthanum aluminate can be partially replaced by a lanthanum-substitute element from the lanthanide group, particularly gadolinium (Gd). A process for producing such an article comprises providing a pre-reacted mixed metal oxide system as described above and applying it to the substrate by plasma spraying or an evaporation coating process.

Abstract: An article that is particularly well suited for use as a gas turbine engine component has a metallic substrate and a ceramic thermal barrier layer including a mixed metal oxide system comprising a compound selected from the group consisting of (i) a lanthanum aluminate and (ii) a calcium zirconate, the calcium in which is partially replaced by at least one calcium-substitute element, such as strontium (Sr) or barium (Ba). In addition, the lanthanum in the lanthanum aluminate can be partially replaced by a lanthanum-substitute element from the lanthanide group, particularly gadolinium (Gd). A process for producing such an article comprises providing a pre-reacted mixed metal oxide system as described above and applying it to the substrate by plasma spraying or an evaporation coating process.