Phosphors include a CaAlSiN.sub.3 family crystal phase, wherein the CaAlSiN.sub.3 family crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb.

The present invention relates to a composite of a cobalt-based perovskite material with a negative thermal expansion material, and a preparation method of the same, and a solid oxide fuel cell (SOFC) comprising the same, and belongs to the technical field of fuel cells. In the present invention, a negative thermal expansion material is introduced into a cobalt-based perovskite oxide to successfully prepare an SOFC cathode material with excellent electrochemical performance and low thermal expansivity. The composite electrode achieves prominent mechanical tolerance in SOFC, which can moderate a volume change during the whole calcination process and enable a smooth transition to a high-temperature stage. The composite electrode has a thermal expansion coefficient (TEC) only of 12.9?10.sup.?6 K.sup.?1, which is perfectly matched with that of an SDC electrolyte. In addition, the composite shows excellent oxygen reduction reaction (ORR) activity, high TEC, and extremely-excellent anti-CO.sub.2 poisoning performance.

A method for manufacturing a magnesium-based thermoelectric conversion material of the present invention includes a raw material-forming step of forming a raw material for sintering by adding silicon oxide in an amount within a range equal to or greater than 0.5 mol % and equal to or smaller than 13.0 mol % to a magnesium-based compound, and a sintering step of heating the raw material for sintering at a temperature within a range equal to or higher than 750 C. and equal to or lower than 950 C. while applying pressure equal to or higher than 10 MPa to the raw material for sintering so as to form a sintered substance.

Provided are a corrosion-resistant member and an electrostatic chuck device using the same, in which corrosion resistance to halogen corrosive gas such as fluorine corrosive gas or chlorine corrosive gas and plasma thereof is high, dielectric constant and volume resistivity are high, and dielectric loss is low. The corrosion-resistant member is formed of a composite oxide sintered compact containing aluminum, samarium, and a rare earth metal element other than samarium, in which the rare earth metal element other than samarium has an ionic radius of 0.8810.sup.10 m or more.

The invention relates to a method for producing a shaped body that contains at least 85 vol. % crystalline silicon carbide and at most 15 vol. % silicon, comprising the following steps: a) providing a powdered mixture that contains at least 60 vol. % amorphous silicon carbide and at most 40 vol. % silicon having a crystallite size of 3-50 nm; b) shaping the mixture by b1) hot pressing, or b2) compacting at room temperature and subsequent sintering or hot pressing, wherein the sintering or hot pressing is carried out in an inert gas or vacuum at a temperature of at least 1400 C. The volume ratio SiC:Si in the powdered mixture is 95:5-99:1.

A non-amorphous hard carbon material, synthesized from Furan-ring containing compounds, is described. These non-amorphous hard carbon materials have a d.sub.002 peak in their X-ray diffraction patterns, corresponding to an interlayer spacing of >3.6 , along with a prominent D-band peak in their Raman spectra. BET surface area values between 2 m.sup.2/gm and around 100 m.sup.2/gm can be obtained by controlling the processing parameters of temperature, time and heating rate. The higher surface area HCsin Li-ion and Na-ion anode configurationsare capable of high charging rates up to 100C with a cycle life of up to 100C cycles. Composites of these non-amorphous hard carbons with silicon and lithium compounds are also disclosed.

A method for preparing a ceramic from an inorganic base material in the form of a powder with a high boiling point, including a step in which the powder of the inorganic base material is mixed with a second inorganic component which is also in powder form and which serves as a dopant for the inorganic base material. The dopant comprises a single inorganic material or a mixture of at least two inorganic materials that have a dopant effect on the inorganic base material. The method also includes a sintering step performed at a high temperature. Owing to the high density thereof, the resulting ceramics are suitable for use as a target element. The films and electrodes obtained from said ceramics have particularly beneficial properties.

A Zr-based composite ceramic material, a preparation method thereof and a shell or a decoration are provided. The Zr-based composite ceramic material includes a zirconia matrix and a cubic Sr.sub.xNbO.sub.3 stable phase dispersed within the zirconia matrix, where 0.7x0.95.

Disclosed is a microcracked ceramic body, comprising a predominant phase (greater than 50 wt %) of zirconium tin titanate and a dilatometric coefficient of thermal expansion (CTE) from 25 to 1000 C of not more than 4010.sup.7 C..sup.1 as measured by dilatometry and methods for the manufacture of the same.

A precursor having at least five percent of lignin based coke and d.sub.002 spacing of more than 3.36 angstroms and less 3.44 for making graphite. Methods for making a green/graphite article include mixing coke derived from a petroleum product, a coal product or a bitumen product with coke derived from lignin. Alternatively, the precursor material for the various types of coke may be mixed and coked together. The mixture may be formed into a desired shape. The article may be subsequently carbonized and graphitized. The amount of lignin derived coke comprises a sufficient quantity to change at least a selected property of the graphite article.