Abstract:
Produit fritté présentant une analyse chimique telle que, en pourcentages en masse sur la base des oxydes, les oxyde(s) de fer, de cobalt et de chrome étant exprimés sous la forme Fe 2 O 3 , Co 3 O 4 et Cr 2 O 3 , respectivement : - ZrO 2 partiellement stabilisée avec CeO 2 et Y 2 O 3 : complément à 100%, - Al 2 O 3 : 3% - 19%, - un additif choisi parmi CaO, les oxydes de manganèse, ZnO, les oxydes de praséodyme, SrO, les oxydes de cuivre, Nd 2 O 3 , BaO, et leurs mélanges : 2 O 3 : > 0,2%, - Co 3 O 4 + Cr 2 O 3 > 0,2%, - impuretés : 2 O 3 + Co 3 O 4 + Cr 2 O 3 dans le produit, - Cr P désignant la proportion de Cr 2 O 3 dans P, - Co P désignant la proportion de Co 3 O 4 dans P, - R étant égal à 100%*Cr P /P, - P > 0,1*Al 2 O 3 + 1%, - 10,5% > P + additif, - R P 2 et Y 2 O 3 étant présents en des quantités telles que, en pourcentage molaire sur la base de la somme de ZrO 2 , CeO 2 et Y 2 O 3 , - CeO 2 : 2,5 – 5,5 mol% et - Y 2 O 3 : 0,5 - 2 mol%, les teneurs des oxydes de zirconium, d'aluminium, de fer, de cobalt et de chrome et les teneurs en additif et en impuretés étant exprimées en pourcentages en masse sur la base des oxydes.
Abstract translation:
产品fritt&oacute; 显示化学分析结果,以氧化物为基准的质量百分比表示为Fe 2 O 3的铁,钴和氧化铬(一种或多种) O 3,Co 3 O 4和Cr 2 O 3分别为: - 用CeO 2和Y 2 O 3部分稳定的ZrO 2:完全地&lt; 100%, - Al 2 O 3:3%-19%, - 选自CaO,锰的氧化物,ZnO,氧化镨的添加剂; odyme,SrO,氧化铜,Nd 2 O 3,BaO及它们的配合物: 6%, - Fe 2 O 3::&gt; 0.2%, - Co 3 O 4 4+ Cr 2 O 3 3, 0.2%, - 杂质: 2%,条件是 - P表示总含量Fe 2 O 3 3+ Co 3 O 4 4 / sub > + Cr 2 O 3:产物中Cr 2 O 3的比例, - Cr 2 P 3表示Cr 2 O 3 在P中,-CO表示在P 1,-R中的Co 3 O 4的比例 也是 100%* CrP / P, - P> 0.1 * Al 2 O 3 3 + 1%, - 10.5%> 1。 P +添加剂, - R < 7,如果100%* Co
Abstract:
In some embodiments, a ceramic armor product includes: a ceramic powder; an at least one metal-based additive; and a density of 4.3-4.7 g/cc, wherein the ceramic armor product is substantially lacking grain orientation. In some embodiments, a ceramic armor product, includes: a ceramic powder, wherein the ceramic powder is titanium diboride (TiB2); an at least one metal-based additive, wherein the at least one metal based additive comprises elements ranging from atomic numbers 21 through 30, 39 through 51, and 57 through 77; and a density of 4.3-4.7 g/cc, wherein the ceramic armor product is substantially lacking grain orientation.
Abstract:
The subject of the invention is the procedure for production of intense infrared radiation emitting composite ceramics, in which: a) we homogenize 31-41 weight% of kaolin, 15-27 weight% of sawdust, 0-1.6 weight% of iron(lll)-oxide, 0-2.60 weight% of titanium-dioxide and 27-46 weight% of lignin at room temperature, whereby we will obtain a paste; b) the paste is extruded into rods, then dried, whereby dry rods will be obtained; c) the dried rods are treated in oxygen-free inert gas atmosphere in two steps: first at 400-650°C. whereby we will obtain baked rods; d) the baked rods are cooled in two stages, whereby we will receive cold rods; e) the cold rods are ground in several stages to average particle size of 2-5 pm, which will give us a composite ceramics powder. Further on, the subject of the invention is the procedure for production of intense infrared radiation emitting composite ceramics, where instead of kaolin tourmaline is used. Also, the subject of the invention is the intense infrared radiation emitting composite ceramics that is produced with our methods, and its application in infrared radiant textile products, infrared emitting hygiene products and in human medicine.
Abstract:
A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m 2 /g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.
Abstract:
A process for preparing alloy products is described using a self-sustaining or self-propagating SHS-type combustion process with point-source ignition, preferably a laser, in a pressurized vessel. Binary, ternary and quaternary alloys can be formed with control over polycrystalline structure and bandgap. Methods to tune the bandgap and the alloys formed are described. The alloy products may be doped. Preferably sulfides, tellurides or selenides are formed. Cooling during reaction takes place.
Abstract:
The present invention relates to a process for the production of fiber- reinforced composite materials with an ultra-refractory, high tenacity, high ablation resistant matrix with self-healing properties, prepared from highly sinterable slurries. The composite material is produced using techniques of infiltration and drying at ambient pressure or under vacuum, and consolidated by sintering with or without the application of gas or mechanical pressure.
Abstract:
Wälzlager umfassend einen metallenen Innenring (2), einen metallenen Außenring (3) und zwischen diesen aufgenommene, auf ringseitigen Laufbahnen wälzende Wälzkörper (6, 6a, 6b, 6c), die aus einem keramischen Werkstoff bestehen. Erfindungsgemäß beträgt die Wärmeleitfähigkeit des keramischen Werkstoffs > 30 W/mK und
Abstract:
Die vorliegende Erfindung betrifft einen 55 Gew.-% bis 65 Gew.-% AI 2 O 3 , 15 Gew.-% bis 25 Gew.-% SiO 2 , 15 Gew.-% bis 25 Gew.-% ZrO 2 und weniger als 3 Gew.-% rohstoffbedingte Verunreinigungen umfassenden gesinterten Zirkonmullit Feuerfest- Verbundstoff, wobei die mineralogische Zusammensetzung des Verbundstoffes 65 Gew.-% bis 85 Gew.-% Mullit und 15 Gew.-% bis 35 Gew.-% Zirkondioxid umfasst.
Abstract translation:本发明涉及55重量%至65重量%的Al 2 O 3,15重量%至25重量% 重量%的SiO 2,15重量%-25重量%的ZrO 2和少于3重量%的包含原料污染物的烧结锆莫来石耐火复合材料 其中所述复合物的矿物组成包含65重量%至85重量%的莫来石和15重量%至35重量%的氧化锆。 p>