Disclosed is a heating element for a dental furnace including a tube element for accommodating a heating coil inside the tube element. At least one closing element may be connected to at least one open end of the tube element, wherein electrical connectors may be led through the closing element and fused with the element. The tube element may be made from a ceramic material, such as oxide ceramics, that may be connected to the connector via a plurality of intermediate glasses/transition glasses and glass solder to compensate for different heat expansion coefficients such that up to 500° C. gas escaping from the tube element may not enter due to a thermal action, providing that operational safety of the heating element is ensured. Further, disclosed is a dental furnace including such a heating element.

Disclosed are fast high-temperature sintering systems and methods. A method of fabrication includes positioning a material at a distance of 0-1 centimeters from a first conductive carbon element and at a distance of 0-1 centimeters from a second conductive carbon element, heating the first conductive carbon element and the second conductive carbon element by electrical current to a temperature between 500° C. and 3000° C., inclusive, and fabricating a sintered material by heating the material with the heated first conductive carbon element and the heated second conductive carbon element for a time period between one second and one hour. Other variations of the fast high-temperature sintering systems and methods are also disclosed. The disclosed systems and methods can quickly fabricate unique structures not feasible with conventional sintering processes.

A dental furnace for firing dental-ceramic compounds comprises a firing chamber for receiving ceramic elements to be fired. Further, a heating device for heating and firing the ceramic element is provided. The heating device comprises at least one heating element for producing IR radiation in the range of 0.8-5 μm.

Disclosed is a heating element for a dental furnace including a tube element for accommodating a heating coil inside the tube element. At least one closing element may be connected to at least one open end of the tube element, wherein electrical connectors may be led through the closing element and fused with the element. The tube element may be made from a ceramic material, such as oxide ceramics, that may be connected to the connector via a plurality of intermediate glasses/transition glasses and glass solder to compensate for different heat expansion coefficients such that up to 500 C. gas escaping from the tube element may not enter due to a thermal action, providing that operational safety of the heating element is ensured. Further, disclosed is a dental furnace including such a heating element.

A dental furnace for firing dental-ceramic compounds comprises a firing chamber for receiving ceramic elements to be fired. Further, a heating device for heating and firing the ceramic element is provided. The heating device comprises at least one heating element for producing IR radiation in the range of 0.8-5 m.

A radiant heating panel has an inner side surface configured to face into a combustion chamber and an outer side surface configured to face oppositely away from the combustion chamber. The panel has interconnected sections formed of ceramic material. The panel sections are elongated with adjacent longitudinal edge portions, and are joined and sealed together along the adjacent longitudinal edge portions. The outer side surface of the panel has a contour that undulates laterally across the panel sections.

A high temperature furnace includes features that provide for multiple heating zones for heating a specimen extending at least partially through a heating chamber defined by the furnace. In one exemplary aspect, the furnace can include multiple heating elements extending at least partially through the heating chamber. Each heating element can be configured in a rod shape, which allows for multiple heating zone capability, better control over the temperature gradient, reduced current to achieve a desired temperature output, and a streamlined furnace shell.

An electrically powered furnace may include a plurality of heating tubes configured to receive a feed and heat the feed. Each of the plurality of heating tubes may define a longitudinal axis extending between a first end of the heating tube and a second end of the heating tube and a longitudinal passage for the feed to pass through during heating of the feed. The electrically powered furnace may also include a plurality of electrical connections electrically connecting the plurality of heating tubes, and an electrical power source electrically connected to the plurality of electrical connections and configured to supply a voltage to the plurality of electrical connections. The voltage may be greater than or equal to 20 volts. The electrical connections may electrically connect the heating tubes in series, and the furnace may be configured such that processing of the feed occurs in parallel.

A high temperature furnace includes features that provide for multiple heating zones for heating a specimen extending at least partially through a heating chamber defined by the furnace. In one exemplary aspect, the furnace can include multiple heating elements extending at least partially through the heating chamber. Each heating element can be configured in a rod shape, which allows for multiple heating zone capability, better control over the temperature gradient, reduced current to achieve a desired temperature output, and a streamlined furnace shell.

Embodiments of the present disclosure generally relate to apparatus and methods for semiconductor processing, more particularly, to a thermal process chamber. In one or more embodiments, a process chamber comprises a first window, a second window, a substrate support disposed between the first window and the second window, and a motorized rotatable radiant spot heating source disposed over the first window and configured to provide radiant energy through the first window.