Abstract: A shielding module for a high-temperature furnace has a packet of interconnected shielding plates. The packet of interconnected shielding plates is mounted to a common base body. The base body has fixing points for fixing to base bodies of other shielding modules of the same kind.

Abstract: A ceramic holding element for a high-temperature furnace includes at least one fastening portion formed on a part of the holding element surface for mechanically connecting the holding element to a supporting structure. At least one heat conductor receiving portion on a part of the holding element surface receives a heat conductor. At least one groove is formed on a peripheral part of the surface of the holding element between the fastening portion and the heat conductor receiving portion. The groove extends substantially over the entire periphery of the peripheral part and at least one imaginary path between the fastening portion and the heat conductor receiving portion along the holding element surface crosses the groove. The groove has an aspect ratio, formed by a depth to width ratio of the groove, being greater than or equal to 1.5.

Abstract: A shielding module for a high-temperature furnace has a packet of interconnected shielding plates. The packet of interconnected shielding plates is mounted to a common base body. The base body has fixing points for fixing to base bodies of other shielding modules of the same kind.

Abstract: A holding device for a heating element and a heater with at least one such holding device. The holding device is produced from a refractory metal or from an alloy on the basis of refractory metal, has at least two holding elements which are arranged perpendicularly or at least substantially perpendicularly to each other. A first holding element is at least partially arranged in an opening of a second holding element.

Abstract: Crucible for growing single crystals, formed from W, Mo, Re, an alloy or a base alloy of these metals, and a process for producing a crucible (2), wherein at least part of an outwardly facing outer face (4) of the crucible (2) has, at least in certain regions, a profile with a mean profile depth (a) of between 5 and 500 ?m.

Abstract: A holding device for a heating element and a heater with at least one such holding device. The holding device is produced from a refractory metal or from an alloy on the basis of refractory metal, has at least two holding elements which are arranged perpendicularly or at least substantially perpendicularly to each other. A first holding element is at least partially arranged in an opening of a second holding element.

Abstract: A crucible for growing crystals, in particular a sapphire single crystal, includes a base crucible made of W, Mo, Re or an alloy of these materials and an inner lining made of W, Mo, Re or an alloy of these materials. The base crucible has a substantially pot-like form. The inner lining has at least a pot-like first portion, which covers a bottom region of the base crucible, and a jacket-like second portion, which at least partially covers a wall region of the base crucible. The first portion and the second portion are formed by separate components. A process for growing sapphire single crystals using a crucible is also provided.

Abstract: The invention relates to a gas generator, especially for generating treatment gas containing CO and H2, for heat treating metallic material at high temperatures. Said gas generator comprises at least one catalytic retort and has means for heating at least partial areas of the catalytic retort(s). According to the invention, the catalytic retort is divided into at least two retort areas (1, 2a, 2b, 2e) and at least one of the retort areas (1), preferably the retort area (1) located first in the direction of flow-through, is configured so that it can be removed from the gas generator.