Abstract: A ceramic powder composition, ceramic material, and laminated ceramic condenser comprised thereof. The composition includes ceramic powders comprising (SrxCa1-x)TiyZr1-yO3, and a sintering aid, wherein x is between 0 and 1, and y is between 0 and 0.1. The sintering aid is Ma2O, MbO, Mc2O3, MdO2, or a combination thereof. Element Ma comprises Li, Na, K, or a combination thereof. Element Mb comprises Be, Mg, Ca, Sr, Ba, or a combination thereof. Element Mc comprises B, Al, Ga, or a combination thereof. Element Md comprises Si, Ge, or a combination thereof.

Abstract: The invention relates to bismuth oxide glass, containing germanium oxide, a method for the production thereof, the use thereof and a glass fiber consisting of said inventive glass.

Abstract: A high-strength machinable ceramic capable of high-precision fine machining has a coefficient of thermal expansion close to that of silicon and preferably a uniform blackish color which facilitates image processing of machined parts. The ceramic comprises a main constituent and a sintering aid. The main constituent comprises 30–59.95 mass % of boron nitride, 40–69.95 mass % of zirconia, optionally up to 20 mass % of silicon nitride and 0.05–2.5 mass % (calculated as an element) of at least one coloring additive, which is selected from C, Si, elements of Groups IIIA–IVB in the fourth period, elements of Groups IVA–VB in the fifth period, elements of Groups IVA–VIB in the sixth period of the long form periodic table, and compounds of these elements.

Abstract: The synergistic composition consists of a mixture of a source of pure silica such as silicon dioxide, a source of carbon such as activated charcoal, ?-silicon carbide and a source of iron such as ferric nitrate. The cost effective synergistic composition is useful for the preparation of improved silicon carbide powder containing at least 90% SiC preferably rich in the ?-phase. Silicon carbide powder finds wide usage in the manufacture of products suitable for refractory and engineering applications.

Abstract: Thin, flaky graphite-containing refractories are obtained by refining and processing naturally occurring minerals and possess a specific size of the extent of the surface of a flaky layer and a specific thickness of a flake. Such flaky graphite-containing refractories exhibit high endurance and are effective as lining materials particularly for steel making furnaces.