Abstract:
Multilayer substrates for the growth and/or support of CNT arrays are provided. These multilayer substrates both promote the growth of dense vertically aligned CNT arrays and provide excellent adhesion between the CNTs and metal surfaces. Carbon nanotube arrays formed using multilayer substrates, which exhibit high thermal conductivity and excellent durability, are also provided. These arrays can be used as thermal interface materials.
Abstract:
The invention relates to a wear part or tool comprising a body containing an iron-group metal or alloy, a wear-resistant layer metallurgically bonded to a surface of the body through an intermediate layer, characterised in that the wear-resistant layer comprises at least 13 vol. % of grains of metal carbide selected from the group consisting of WC, TiC, VC, ZrC, NbC, Mo2C, HfC and TaC and grains of (Cr1Me)xCy and a metal based phase comprising of a solid solution of 0.5 to 20% Cr, 0.2 to 15% Si1 and 0.2 to 20% carbon, where Me is Fe, Co and/or Ni; and the intermediate layer has a thickness of 0.05 to 1 mm and comprises Si in amount of 0.1 to 0.7 of that in the wear-resistant layer, chromium in amount of 0.1 to 0.6 of that in the wear-resistant layer and the metal of the metal carbide in amount of 0.2 to 0.6 of that in the wear-resistant layer and to a method of producing such a wear part.
Abstract:
A layered coating is disclosed herein. The layered coating includes a chromium layer, an intermediate layer of chromium and nitrogen established on the chromium layer, and an outer layer of chromium and nitrogen established on the intermediate layer. The intermediate layer has a gradually changing composition, wherein the chromium concentration decreases from an area of the intermediate layer adjacent the chromium layer towards a surface of the layered coating.
Abstract:
The invention includes pieces of ceramic armor, methods of joining a carbide with a metal-comprising piece, and methods of metallizing carbide-comprising surfaces. In one implementation, a method of joining a carbide with a metal-comprising piece includes providing a mixture comprising (a) and (b) over a carbide-comprising surface of a substrate, where (a) comprises at least one of niobium and titanium, and (b) comprises silicon. The mixture is heated over the carbide-comprising surface at least to the melting temperatures (a) and (b). The melted mixture is solidified into an adherent layer on the substrate. A metal-based joining material is provided over the adherent layer. Metal of a metal-comprising piece is welded to the substrate with the metal-based joining material.
Abstract:
An electrical component includes a conductive substrate, a tin layer formed on the substrate, and a barrier coating formed on the tin layer to impede tin whisker growth. The barrier coating includes a polymer matrix, and abrasive particles that are dispersed about the matrix.
Abstract:
The invention relates to a composite structure for microlithography, in particular a holding device for a wafer (11), comprising two or more components (17a to 17e), the surfaces whereof are bonded together at least at one bond. At least one of the components (17a to 17e) consists of cordierite (Mg 2 Al 4 Si 5 O 18 ) or of silicon carbide (SiC). The invention also relates to an optical arrangement, in particular a projection illumination apparatus for microlithography, comprising at least one such composite structure, preferably a wafer stage (12' ).
Abstract translation:本发明涉及用于微光刻的复合结构,特别是用于晶片(11)的保持装置,其包括两个或更多个部件(17a至17e),其表面至少在 一个债券。 至少一种组分(17a至17e)由堇青石(Mg 2 Al 4 Si 5 O 18 18)/亚组分 >)或碳化硅(SiC)。 本发明还涉及光学装置,特别是用于微光刻的投影照明设备,其包括至少一个这种复合结构,优选为晶片台(12')。 p>
Abstract:
A wear-resistant article (22 or 24) that includes a substrate (50) that presents a surface. The substrate has a bulk region and a surface region beginning at and extending inward from the surface toward the bulk region. There is a diffusion barrier layer (52) on at least a portion of the surface of the substrate wherein the diffusion barrier layer is a nickel-based alloy. There is a wear-resistant cladding layer (34 or 40) on the diffusion barrier layer wherein the wear-resistant layer contains boron. The surface region of the substrate contains no boron that has been diffused from the wear-resistant cladding layer.