Abstract: The invention provides an iron-based metallic glass alloy powder including: Fe as the main component; a metalloid element group including Si, B, and C; a small amount of Mo to improve the degree-of-supercooling; and the addition of Cr and Ni to increase corrosion resistance, where the total amount of the metalloid element group, the amount of the degree-of-supercooling improvement element and the total amount of the elements to increase corrosion resistance are set within predetermined ranges.

Abstract: A method of manufacturing a joint between metal and a ceramic substrate for a high temperature sensor. First, a predetermined hole is formed in the ceramic substrate to serve as a joint portion. A bonding layer is preferably disposed on the ceramic substrate to form on the inner surface and the surrounding portion of the hole. Next, the hole is filled with a supporting metal. Then, a conductive layer is formed on the supporting metal and the bonding layer. A metal signal conductive frame is then formed on the conductive layer. Next, a welding spot is formed through the metal signal conductive frame, the conductive layer and the supporting metal at the joint portion by a welding process.

Abstract: A method of manufacturing a joint between metal and a ceramic substrate for a high temperature sensor. First, a predetermined hole is formed in the ceramic substrate to serve as a joint portion. A bonding layer is preferably disposed on the ceramic substrate to form on the inner surface and the surrounding portion of the hole. Next, the hole is filled with a supporting metal. Then, a conductive layer is formed on the supporting metal and the bonding layer. A metal signal conductive frame is then formed on the conductive layer. Next, a welding spot is formed through the metal signal conductive frame, the conductive layer and the supporting metal at the joint portion by a welding process.

Abstract: A high efficiency heat sink includes a first chamber, a second chamber and at least one cooling fin. The first chamber contains coolant and absorbs heat from a heat source, vaporizing the coolant. The second chamber receives the vaporized coolant from the first chamber, transmits the heat from the vaporized coolant to the cooling fin so that the vaporized coolant is condensed, and forces the condensed coolant back to the first chamber via capillary pressure.

Abstract: A self-drilling expansion screw capable of being driven by a screw driving means comprises: (a) a screw shank having a first end and a second end, including: (1) an expansion hole extending a distance along the axis of the screw shank from the first end toward the second end; (2) a slot located on the expansion hole, for communicating the expansion hole with the outer periphery of the screw shank; (3) a holding portion, formed by a plurality of strip grooves provided at the outer periphery of the screw shank with respect to the expansion hole; and (4) a screw threaded portion provided between the second end and the holding portion; (b) a nut member screwed from the screw threaded portion; (c) a taper head having a coarse end and a small end, the small end inserted into the expansion hole, the holding portion expanding outwards while the taper head is pushed into the expansion hole; (d) a drilling bit provided at the coarse end; and (e) a coupling portion provided at the second end of the screw shank, for enga