Methods for use in the manufacture or assembly of an electrical feedthrough to provide a solution to the technical and operational challenges that may arise from use of a high-CTE metal/low-CTE sealing material based assembly or package. In some embodiments, the inventive method includes a thermal tempering and thermal quenching process that is used to create an interfacial layer of the sealing material in which there exists a CTE gradient from sealing material to the metal shell and pin(s). This enables the production of an electrical feedthrough assembly that can tolerate high-CTE mismatch induced mechanical stress over a wide operating temperature range.

A feed-through for high external pressure applications and methods of producing are provided. The feed-through includes a base body, a through-hole extending through the base body, and a functional element. The functional element is arranged inside the through-hole. The functional element is connected to the base body in fluid-tight manner with a pressure compensator and an insulating material that at least partially surrounds the functional element and establishes the fluid-tight connection. The pressure compensator increases pressure resistance of the fluid-tight connection of the functional element to the base body against pressure.

A lead-through or connecting element is provided that includes an assembly having a carrier body of a high-temperature alloy, a functional element, and an at least partially crystallized glass. The crystallized glass is between a portion of the functional element and a portion of the carrier body. The carrier body subjects the crystallized glass to a compressive stress of greater than or equal to zero, at a temperature from at least 20? C. to more than 450? C. Also provided are a method for producing a lead-through or connecting element, the use of such a lead-through or connecting element, and to a measuring device including such a lead-through or connecting element.

The present invention provides a system and method for providing a seal for an electrical penetrator in a subsea environment. More specifically, the present invention provides for a system for creating a seal about an electrical penetrator without using o-rings or independent seals. The present invention provides for a set of supporting apparatuses to be placed in compression about a central ceramic penetrator element. The geometry of the central ceramic penetrator element and the interior of the supporting apparatuses forms a hermetic seal when under a constant radial and axial, or axial compressive force.

A penetrator assembly, for high pressure and/or subsea applications, includes a body. The body includes a first end surface, in operation subject to a pressure of a high pressure environment; a second end surface distanced from the first end surface, which in operation is subject to a pressure of a low pressure environment; at least one connecting passage connecting the first end surface to the second end surface; at least one groove extending from the first end surface towards the second end surface, being distanced from second end surface and surrounding the connecting passage and including an annular opening on the first end surface; and annular lips between a first portion of connecting passage adjacent to the first end surface and the groove, the annular lips in operation being subject to the pressure of the high pressure environment and providing a pressure balance around the first portion of connecting passage.

A metal fixing material leadthrough for igniters of airbags and/or belt tighteners includes at least one metal pin fused into a glass or glass-ceramic fixing material in a through-opening of a main body. The metal is present in a post-heated state, with an interface between the fixing material and the metal pin and an additional interface between the fixing material and an inner surface of the through-opening. The at least one metal pin, at least in its core region, consists of stainless steel, such as a chromium-containing stainless steel, the stainless steel having a thermal expansion coefficient.

An integrated downhole electrical feedthrough package may include a metal shell having a metal web conduit disposed within the metal shell. A sealing channel may extend through the metal web conduit. One or more conducting pins may be disposed in the sealing channels. A dielectric seal may also be disposed in the metal web conduit, and the dielectric seal may electrically isolate the one or more conducting pins from the metal web conduit and metal shell. One or more isolators may also be disposed within the metal conduit and each isolator may surround a portion of each conducting pin disposed in the metal conduit. Each isolator may have a high coefficient of thermal expansion material, and a nonpolar surface which may be positioned proximate to a dielectric seal.

A hermetic terminal according to the present disclosure includes a metal sleeve having a tubular shape, a ceramic substrate fixed to an inner peripheral surface of the metal sleeve and including a first through hole along an axial direction of the metal sleeve, an annular member including a second through hole located coaxially with the first through hole, and a conductive member having a columnar shape, inserted into the first through hole and the second through hole, and brazed to the ceramic substrate and the annular member. An inner peripheral surface of the annular member facing the conductive member includes a first region curved in a direction away from the conductive member.

A metal fixing material leadthrough for an igniter of airbags and/or belt tensioners includes a main body having a through-opening formed therein and at least one metal pin fused into a glass or glass-ceramic fixing material in the through-opening and having a core region. The at least one metal pin, at least in its core region, consists of ferritic stainless steel made to the EN 10020 standard. The ferritic stainless steel is selected in such a way that, when converted to a standard dimensioning of a metal pin diameter of 1.000.03 mm and a metal pin length of 11.680.02 mm, the at least one metal pin has a maximum elastic deflection W.sub.max of less than 0.24 mm.

One aspect relates to a component comprising i. a base body having a first component surface and a further component surface, the base body comprising a ceramic at least to an extent of 50 wt %, based on the total weight of the base body; ii. at least one electrical conduction element, the at least one electrical conduction element comprising a metal at least to an extent of 51 wt %, based on the electrical conduction element, and the at least one electrical conduction element passing through the entire base body from the first component surface to the further component surface; iii. at least one fastening element having a contact area, the at least one fastening element comprising a metal at least to an extent of 51 wt %, based on the fastening element, and the fastening element being surrounded at least in part by the base body.