Abstract: A sintered rare earth oxyfluoride compact is composed of LnaObFc (wherein Ln is a rare earth element; and a, b, and c each independently represent a positive number, provided that they are not equal to each other) or Ca-stabilized LnOF as a primary phase and LnOF unstabilized with Ca as a secondary phase. The intensity ratio of the XRD peak of the (018) or (110) plane of the unstabilized LnOF to the highest XRD peak of LnaObFc is preferably 0.5% to 30%.

Abstract: Out of sintered metal carbides having an extremely high melting point, there is provided a sintered metal carbide which can be produced without having to perform sintering under high pressure such as hot pressing or HIP, having a high relative density and excellent mechanical strength. A sintered metal carbide of at least one metal selected from the group consisting of elements of Groups 4 and 5 of the periodic table, wherein the sintered metal carbide contains Si element of 0.1 wtppm or more and 10,000 wtppm or less.

Abstract: A sintered rare earth oxyfluoride compact is composed of LnaObFc (wherein Ln is a rare earth element; and a, b, and c each independently represent a positive number, provided that they are not equal to each other) or Ca-stabilized LnOF as a primary phase and LnOF unstabilized with Ca as a secondary phase. The intensity ratio of the XRD peak of the (018) or (110) plane of the unstabilized LnOF to the highest XRD peak of LnaObFc is preferably 0.5% to 30%.

Abstract: A sintered rare earth oxyfluoride compact is composed of LnaObFc (wherein Ln is a rare earth element; and a, b, and c each independently represent a positive number, provided that they are not equal to each other) or Ca-stabilized LnOF as a primary phase and LnOF unstabilized with Ca as a secondary phase. The intensity ratio of the XRD peak of the (018) or (110) plane of the unstabilized LnOF to the highest XRD peak of LnaObFc is preferably 0.5% to 30%.

Abstract: A heater tube for molten metal immersion 1 has a cylindrical heater housing part 4 equipped with a closed end 2 and an open end 3, wherein the heater housing part 4 comprises silicon nitride, a compound comprising yttrium, and a compound comprising magnesium. The heater housing part 4 has a surface roughness Ra of an outer circumferential surface of the heater housing part 4 is between 0.5 ?m and 10 ?m, inclusive.

Abstract: The long-term use of a conventional jig for calcining an electronic component arises a problem such as peel-off of a zirconia surface layer. Even if the performance is not deteriorated in the short-term use, the zirconia surface layer reacts with the electronic component to shorten the life of the jig for calcining the electronic component when the use is prolonged for a longer period of time. A jig for calcining an electronic component is provided which is stable after use of a longer period of time by suitably setting the composition of a zirconia surface layer. For example, in the zirconia surface layer containing zirconia particles and a partially fused-bonding agent, an amount of calcia is made to be 4 to 15% in weight.

Abstract: A process for producing a wiring board is provided, comprising allowing a wiring board-forming mold, which comprises a support base and a mold pattern that is formed in a protruded shape on one surface of the support base wherein the sectional width of the mold pattern on the support base side is larger than the sectional width thereof on the tip side in the same section of the mold pattern, to penetrate into a curing resin layer to transfer the mold pattern, curing the curing resin layer, releasing the laminate from the mold, depositing a conductive metal, and polishing the deposited metal layer that to form a depressed wiring pattern, and a wiring board produced by this process.

Abstract: A jig for calcining an electronic component including a substrate 11 and a zirconia layer 12 coated on a surface of the substrate characterized in that the zirconia layer including one or more metal oxides forming a liquid phase is calcined for improving peel-off resistance and wear resistance to crystallize the liquid phase after the calcination. In the jig for calcining the electronic component, when the zirconia layer is formed by using an inexpensive method such as an application method, the zirconia layer is not peeled off from the substrate, and grains are not detached.

Abstract: A jig for calcining an electronic component including a substrate 11 and a zirconia layer 12 coated on a surface of the substrate characterized in that the zirconia layer including one or more metal oxides forming a liquid phase is calcined for improving peel-off resistance and wear resistance to crystallize the liquid phase after the calcination. In the jig for calcining the electronic component, when the zirconia layer is formed by using an inexpensive method such as an application method, the zirconia layer is not peeled off from the substrate, and grains are not detached.

Abstract: The long-term use of a conventional jig for calcining an electronic component arises a problem such as peel-off of a zirconia surface layer. Even if the performance is not deteriorated in the short-term use, the zirconia surface layer reacts with the electronic component to shortent the life of the jig for calcining the electronic component when the use is prolonged for a longer period of time. A jig for calcining an electronic component is provided which is stable after use of a longer period of time by suitably setting the composition of a zirconia surface layer. For example, in the zirconia surface layer containing zirconia particles and a partially fused-bonding agent, an amount of calcia is made to be 4 to 15% in weight.

Abstract: A jig for calcining an electronic component including a substrate and a zirconia surface layer formed on the substrate, wherein one of the skewness, the kurtosis, the central surface average roughness the wear resistance and the thermal shock resistance of the zirconia surface layer is specified to a certain range. Consequently, the jig for calcining the electronic component can efficiently conduct the calcination without deteriorating the properties of the electronic component to be calcined.

Abstract: An electronic component burning jig comprising a base (11) and a zirconia layer (12) with which the surface of the base is characterized in that the zirconia layer containing one or more metal oxides forming a liquid phase is fired and the liquid phase (15) is crystallized after the firing to improve the separation resistance and wear resistance. Even when the zirconia layer is formed by a low-cost method such as coating, the zirconia layer is not separated from the base and no particle comes off the zirconia layer.

Abstract: A process for producing a thermoelectric material comprising mixing at least two of bismuth, tellurium, selenium, and antimony and, if desired, a dopant, melting the mixture, grinding the resulting alloy ingot, forming the powder, and sintering the green body under normal pressure, or hot pressing the powder, wherein the grinding and the normal sintering or hot pressing are carried out in the presence of a solvent represented by CnH2n+1OH or CnH2n+2CO (wherein n is 1, 2 or 3).

Abstract: A process for producing a thermoelectric material comprising mixing at least two of bismuth, tellurium, selenium, and antimony and, if desired, a dopant, melting the mixture, grinding the resulting alloy ingot, forming the powder, and sintering the green body under normal pressure, or hot pressing the powder, wherein the grinding and the normal sintering or hot pressing are carried out in the presence of a solvent represented by CnH2n+1OH or CnH2n+2CO (wherein n is 1, 2 or 3).