摘要:
In the case of a metal-ceramic substrate with a multilayered ceramic material in sheet form, and with at least one metallization that is provided on one surface side of the ceramic material and is joined to the ceramic material by direct bonding or active soldering, the ceramic material comprises at least one inner layer or base layer of a silicon nitride ceramic. The surface side of the ceramic material that is provided with the at least one metallization is formed by an intermediate layer of an oxidic ceramic applied to the base layer.
摘要:
The present invention relates to a process for the deposition of protective coatings on complex shaped Si-based substrates which are used in articles and structures subjected to high temperature, aqueous environments comprises a non-line-of-sight process, particularly, electrophoretic deposition (EPD) process. The deposition process comprises steps of: providing a complex shaped Si-containing substrate; depositing an electrically conductive layer on the substrate; and depositing at least one barrier layer by electrophoretic deposition (EPD) as a protective coating.
摘要:
The invention relates to a method for producing hydroxyl apatite coated ceramics components. In a first step of the inventive method the ceramic component is provided with a Ti coating and in a second step a hydroxyl apatite is applied to the Ti coating. The invention further relates to hydroxyl apatite coated ceramic components produced according to the inventive method.
摘要:
A method is provided to fabricate a carbon-carbon (C/C) composite valve (15) comprising machining a carbon-carbon composite valve stem having a flared end (13) and a non-flared end (11) from a cured and densified carbon-carbon plate having a sufficient thickness. Applying a plurality of circular fabric plies coaxially onto the non-flared end of the carbon-carbon valve stem and advancing the plies to contact the flared end of the valve stem. Placing the carbon-carbon valve stem contacted with the plurality of circular fabric plies into a die, closing the die, and cure pressing the plies onto the flared end of the carbon-carbon valve stem to form a valve head. Carbonizing the press cured carbon-carbon composite valve, densifying the carbon-carbon composite valve structure, and coating at least one of the carbon-carbon valve stem and valve head with a high temperature resistant coating comprising an inner and an outer layer.
摘要:
A three-layer heat-resistant material is disclosed which includes a substrate of a carbon fiber-reinforced carbon composite (1), an outer metal layer (3) and a ceramic layer (2) interposed between the substrate and the metal layer. A conveyer belt using the heat-resistant material is also disclosed.
摘要:
A substrate (5) having a superconducting thin film of compound oxide thereon. An intermediate layer consists of at least one layer of copper and a layer of copper-containing oxide is interposed between the substrate and the superconducting thin film.