A multilayer electronic component that includes a stacked body having therein a plurality of dielectric layers including a CZ-based perovskite phase and an element M1, a plurality of internal electrode layers including Cu, and an interface layer including the element M1 in at least a portion of an interface with the plurality of internal electrode layers. Element M1 is an element that has a binding energy between CZ and Cu via the element M1 of less than or equal to −9.8 eV by first-principles calculation using a pseudopotential method. When amounts of elements included in the dielectric layers are expressed as parts by mol, a ratio m1 of an amount of the element M1 to an amount of the Zr in the interface layer is 0.03≤m1≤0.25.

A seal system includes a ceramic component that has a non-core-gaspath surface region that defines a first surface roughness and a core gaspath surface region. A metallic component is situated adjacent the non-core-gaspath surface region. A coating system is disposed on the ceramic component. The coating system includes a silicon-containing layer on the non-core-gaspath surface region and a barrier layer that has a first section on the silicon-containing layer and a second section on the core-gaspath region and that is connected to the first section. The surface of the barrier layer has a second surface roughness that is less than the first surface roughness. The first section is in contact with the metallic component and the second section serves as an environmental barrier on the core-gaspath region.

A polycrystalline super hard construction has a first region having a body of thermally stable polycrystalline super hard material having a plurality of intergrown grains of super hard material; a second region forming a substrate having a hard phase and a binder phase; and a third region interposed between the first and second regions. The third region includes a composite material having a first phase comprising a plurality of non-intergrown grains of super hard material, and a matrix material. A fourth region interposed between the second and third region has a major proportion having one or more components of the binder material of the second region, and one or more reaction products between the binder material of the second region and one or more components of the third region.

A carrier substrate (1) for electrical components, in particular metal-ceramic substrate (1) for electrical components, comprising an insulation layer (10), the insulation layer (10) preferably having a material comprising a ceramic or a composite comprising at least one ceramic layer, a component metallization (20) which is formed on a component side (BS) and has a first primary structuring (21), and a cooling part metallization (30) which is formed on a cooling side (KS) opposite the component side (BS) and has a second primary structuring (31), wherein the insulation layer (10), the component metallization (20) and the cooling part metallization (30) are arranged one above the other along a stacking direction (S), and
wherein the first primary structuring (21) and the second primary structuring (31), as viewed in the stacking direction (S), run congruently at least in portions.

A seal system includes a ceramic component, a metallic component, a silicon-containing layer, and a barrier layer. The ceramic component has a first surface region that defines a first surface roughness. The metallic component is situated adjacent to the first surface region and has a second surface region facing the first surface region. The silicon-containing layer is on the first surface region of the ceramic component and has a contact surface that defines a second surface roughness which is less than the first surface roughness. The barrier layer is on the metallic component and in contact with the silicon-containing layer and serves to limit interaction between silicon of the silicon-containing layer and the metallic component. The barrier layer includes at least one of alumina or MCrAlY.

A seal system includes a ceramic component, a metallic component, a coating system. The ceramic component has a first surface region that defines a first surface roughness. The metallic component is situated adjacent to the first surface region and has a second surface region facing the first surface region. The coating system includes a silicon-containing layer on the surface region of the ceramic component and barrier layer on the silicon-containing layer. The silicon containing layer has a surface in contact with the barrier layer and the barrier layer has a surface in contact with the metallic component. The surface of the barrier layer has a second surface roughness that is less than the first surface roughness. The barrier layer serves to limit interaction between silicon of the silicon-containing layer and elements of the metallic component. The barrier layer includes at least one of mullite, zircon, or hafnon.

A polycrystalline super hard construction is disclosed having a first region comprising a body of thermally stable polycrystalline super hard material having an exposed surface forming a working surface, and a peripheral side edge, the polycrystalline super hard material comprising a plurality of grains of super hard material; a second region forming a substrate to the first region; and a third region interposed between the first and second regions. The third region extends across a surface of the second region along an interface, the interface comprising a portion having an uneven topology and a substantially planar portion, the third region comprising a composite material including a first phase comprising a plurality of non-intergrown diamond grains, and a matrix material.

A polycrystalline super hard construction comprises a body of polycrystalline super hard material and a substrate bonded to the body along an interface. The substrate a first end surface forming the interface, the first end surface comprising a projection extending from the body of the substrate into the body of super hard material towards the cutting face, the body of polycrystalline material extending around the projection. The body of polycrystalline material comprises a first region more thermally stable than a second region, the first region comprising an annular portion located around the projection, the second region extending between and bonding the first region to the substrate. The first region has a thickness from the cutting face along the peripheral side edge to the interface of at least around 3 mm and a portion of the projection has a thickness measured in a plane extending along the longitudinal axis of at least around 3 mm.

Methods of forming joinery between components formed from dissimilar materials, and assemblies utilizing the joinery. The components include interface surfaces having complementary peaks and valleys that interlock. A compliant interface is formed between the interface surfaces and the interface can be configured to provide functionality.

This copper/ceramic bonded body includes: a copper member made of copper or a copper alloy; and a ceramic member made of nitrogen-containing ceramics, the copper member and the ceramic member are bonded to each other, in which, between the copper member and the ceramic member, an active metal nitride layer containing nitrides of one or more active metals selected from Ti, Zr, Nb, and Hf is formed on a ceramic member side, and a Mg solid solution layer in which Mg is solid-dissolved in a Cu matrix is formed between the active metal nitride layer and the copper member, and Cu-containing particles composed of either one or both of Cu particles and compound particles of Cu and the active metal are dispersed in an interior of the active metal nitride layer.