摘要:
A power module substrate (10) includes an insulating substrate (11), and a circuit layer (12) that is formed on one surface of the insulating substrate (11). The circuit layer (12) is formed by bonding a first copper plate (22) onto one surface of the insulating substrate (11). Prior to bonding, the first copper plate (22) has a composition containing at least either a total of 1 to 100 mol ppm of one or more kinds among an alkaline-earth element, a transition metal element, and a rare-earth element, or 100 to 1000 mol ppm of boron, the remainder being copper and unavoidable impurities.
摘要:
A Cu/ceramic bonded body according to the present invention is formed by bonding a copper member made of copper or a copper alloy and a ceramic member made of AlN or Al 2 O 3 using a bonding material containing Ag and Ti, in which a Ti compound layer made of a Ti nitride or a Ti oxide is formed at a bonding interface between the copper member and the ceramic member, and Ag particles are dispersed in the Ti compound layer.
摘要翻译:根据本发明的Cu /陶瓷粘合体通过使用包含Ag和Ti的粘合材料粘合由铜或铜合金制成的铜构件和由AlN或Al 2 O 3制成的陶瓷构件而形成,其中Ti 在铜构件和陶瓷构件之间的接合界面处形成由Ti氮化物或Ti氧化物构成的化合物层,并且Ag颗粒分散在Ti化合物层中。
摘要:
There is a provided a copper-ceramic bonded body in which a copper member (22) formed of copper or a copper alloy and a ceramic member (11) formed of nitride ceramic are bonded to each other, in which an active element oxide layer (30) containing an active element and oxygen is formed at bonding interfaces between the copper member (22) and the ceramic member (11), and a thickness t of the active element oxide layer (30) is in a range of 5 nm to 220 nm.
摘要:
Adhesive compositions and methods for bonding materials with different thermal expansion coefficients is provided. The adhesive is formulated using a flux material, a low flux material, and a filler material, where the filler material comprises particulate from at least one of the two components being bonded together. A thickening agent can also be used as part of the adhesive composition to aid in applying the adhesive and establishing a desired bond thickness. The method of forming a high strength bond using the disclosed adhesive does not require the use of intermediary layer or the use of high cure temperatures that could damage one or both of the components being bonded together.
摘要:
A method for joining engine components includes positioning a first plurality of thermal protection structures across a thermal protection space between a first thermal protection surface and a second thermal protection surface. The first and second engine components are locally joined by forming a first plurality of transient liquid phase (TLP) or partial transient liquid phase (PTLP) bonds along corresponding ones of the first plurality of thermal protection structures between the first thermal protection surface and the second thermal protection surface. The second thermal protection surface is formed from a second surface material different from a first surface material of the first thermal protection surface.
摘要:
A method of forming an integral fastener (148) for a ceramic matrix composite component comprises the steps of forming a fiber preform (130), applying a polymer material (132) to the fiber preform (130) to form a rigid preform structure (134), machining an opening (110) in the rigid preform structure (134), forming a fiber fastener (100), inserting the fiber fastener (100) into the opening (110), removing the polymer material (132), and infiltrating a matrix material into the rigid preform structure (134) and fiber fastener (100) to form a ceramic matrix composite component with an integral fastener (148). A gas turbine engine component (102) is also disclosed.
摘要:
A power module substrate according to the present invention is a power module substrate in which a copper sheet made of copper or a copper alloy is laminated and bonded onto a surface of a ceramic substrate (11), an oxide layer (31) is formed on the surface of the ceramic substrate (11) between the copper sheet and the ceramic substrate (11), and the thickness of aAg-Cu eutectic structure layer (32) is set to 15 µm or less.
摘要:
A ceramic matrix composite member to be used as a turbine blade (1) includes a principal part forming a blade part (2) and a dovetail part (6), and a subordinate part forming a platform part (4). A principal fiber in a ceramic fiber fabric (13) forming the principal part is a continuous fiber. An extension direction of the principal fiber is in parallel with a direction in which stress is applied. The ceramic fiber fabric (13) forming the principal part and a ceramic fiber fabric (15) forming the subordinate part are joined together and formed into an integrated three-pronged fiber fabric (11). The ceramic fiber fabric (13) forming the principal part and the ceramic fiber fabric (15) forming the subordinate part are integrated together by being set into a mold with the ceramic fiber fabric (15) forming the subordinate part folded at a desired angle to the ceramic fiber fabric (13) forming the principal part. Then, a ceramic matrix is formed in the obtained molded body.
摘要:
A monolithic, hermetic joining or bonding of two or more aluminum nitride ("AIN") ceramic components is made by promoting transient liquid phase sintering near the contact areas between the components. In a first approach, AIN particles are combined with a rare earth oxide sintering additive such as yttrium oxide (Y203) in a joining paste can be applied between the joining surfaces of fired ceramic preformed components prior to final firing to weld the components together, in a second approach, the additive is added to green mixture, and the components having different shrinkage aspect ratios are mated and cofired in an atmosphere containing a partial pressure of the additive. The additive encourages wetting and diffusion of the liquid phases present on the surfaces of ceramic interface particles in the contact areas during final firing. Such processes can be used to form complex ceramic structures such as a ceramic susceptor used in integrated circuit fabrication. The components can have a plurality of embedded metallized electronic traces which can be electrically interconnected across the interface between the components.