摘要:
The present invention relates to an article comprising at least one of a glass or glass-ceramic comprising Al 2 O 3 and at least one of REO or Y 2 O 3 , wherein at least 60 percent by weight of the glass or glass-ceramic comprise the Al 2 O 3 and the at least one of REO or Y 2 O 3 , and wherein the glass or glass-ceramic contains not more than 40 percent by weight collectively SiO 2 , B 2 O 3 , and P 2 O 5 , based on the total weight of the glass or glass-ceramic.
摘要:
The present invention provides a material suitable for use in a solid oxide fuel cell, wherein the material is of an, optionally doped, double perovskite oxide material having the general formula (I): (LnaXb)e(Z1cZ2d)fOg (I) wherein Ln is selected from Y, La and a Lanthanide series element, or a combination of these and X also represents an element occupying the A site of a perovskite oxide and is selected from Sr, Ca and Ba, and Z1 and Z2 represent different elements occupying the B site of a perovskite oxide and are selected from Cr, Mn, Mg and Fe, and wherein a has a value from 0 to 1, preferably 0.7 to 1.0, b has a value of from 1 to 0, preferably 0.3 to 0, and each of c and d has a value of from 0.25 to 0.75, provided that a+b has a value of 1, and c+d, has a value of 1, and wherein e has a value of from 0.8 to 1, wherein f has a value of from 0.8 to 1, and g has a value of from 2.5 to 3.2. Also provided are SOFCs having an electrode or functional layer of a material or containing a material of the invention, as well as mixed ionic/electronic conducting membranes suitable for use in a syngas reactor or oxygen separator, comprising a layer of a double perovskite material of the invention, and a method of oxidising a fuel in an SOFC having an anode of a double perovskite material of the invention.
摘要:
The invention relates to an NTC component with a base body (1) comprising at least one first (2) and one second (5) spatially formed ceramic partial area made of different NTC materials, wherein at least one first (10) and one second (15) contact layer are provided on the surface of the base body. Electrically conductive electrode layers (25) are also provided inside the base body. NTC components having the same size and different electrical properties can be produced by varying the relative arrangement and the relative proportions of both ceramic partial areas in the base body using appropriate combinations of materials and by varying the electrode layers.
摘要:
Al2O3-Y2O3-ZrO21/HfO2 ceramics (including glasses, crystalline ceramics, and glass-ceramics) and methods of making the same. Ceramics according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. The particles and fibers are useful, for example, as thermal insulation, filler, or reinforcing material in composites (e.g., ceramic, metal, or polymeric matrix composites). The thin coatings can be useful, for example, as protective coatings in applications involving wear, as well as for thermal management. Certain ceramic particles according to the present invention can be are particularly useful as abrasive particles.
摘要:
Die vorliegende Erfindung beschreibt einen titanhaltigen Zuschlagstoff, bestehend aus Rückständen der TiO 2 -Herstellung und einem oder mehreren Bestandteilen, ausgewählt aus Kohle oder kohlehaltigen Rückständen, Eisen, Eisenoxid, eisen- oder eisenoxidhaltigen Rückständen und einem oder mehreren Bestandteilen, ausgewählt aus Erdalkalimetalloxiden, Erdalkalimetallhydroxiden, erdalkalimetalloxid- oder erdalkalimetallhydroxidhaltigen Rückständen, Al 2 O 3 , Al(OH) 3 , Al 2 O 3 - oder Al(OH) 3 -haltigen Rückständen und SiO 2 oder SiO 2 -haltigen Rückständen. Die vorliegende Erfindung beschreibt weiter einen titanhaltigen Zuschlagstoff, bestehend aus Rückständen der TiO 2 -Herstellung, einem oder mehreren Bindemitteln und einem oder mehreren Bestandteilen, ausgewählt aus Kohle oder kohlehaltigen Rückständen, Eisen, Eisenoxid, eisen- oder eisenoxidhaltigen Rückständen und einem oder mehreren Bestandteilen, ausgewählt aus Erdalkalimetalloxiden, Erdalkalimetallhydroxiden, erdalkalimetalloxid- oder erdalkalimetallhydroxidhaltigen Rückständen, Al 2 O 3 , Al(OH) 3 , Al 2 O 3 oder Al(OH) 3 -haltigen Rückständen und SiO 2 oder SiO 2 -haltigen Rückständen in Form von Briketts, Pellets oder Granulaten. Die vorliegende Erfindung beschreibt schließlich die Verwendung des titanhaltigen Zuschlagstoffs zur Erhöhung der Haltbarkeit der feuerfesten Ausmauerung eines Ofens und als Schlackenbildner.