Abstract:
A coating blade having a covering comprising a nickel-based matrix and particles of ceramic, diamond or carbide dispersed in said matrix, on the functional part of said blade.
Abstract:
The invention relates to a method for manufacturing a surface-alloyed cylindrical, partly cylindrical or hollow cylindrical structural member where in the zone of incidence of the energy beam there is formed a locally bounded melting bath with a heating and melting front, a solution zone and a solidification front. At the side of the energy beam the hard material powder is deposited via a conveyor device in the direction of gravity and is supplied co-ordinated with the feed movement of the workpiece in a width which corresponds to the width of the linear focus and a layer height of 0.3-3 mm is thereby produced. The hard-material powder supplied to the workpiece surface in the heating front of the melting bath is heated by an energy beam at a wavelength of 780-940 nm and in contact with the liquefied matrix alloy the powder is immediately dissolved in the melting bath. Convection is produced in the solution zone by the energy beam having a specific power of at least 104 W/cm2, so that the homogenisation process in the melting zone is accelerated, where the linear focus acts on the solution zone until the hard material powder is uniformly distributed in the melting bath. In front of the energy beam the uniformly distributed powder material, which has gone into solution metallurgically in the solution zone, is subjected to directional solidification in the solidification front at a high cooling rate of 200-600 K/s at a feed rate of 500-10,000 mm/min. The invention also relates to a device for implementing the method, consisting of a workpiece clamping device, on which a workpiece is aligned and clamped above index holes and/or above working surfaces, onto whose surface a powder supply and a focusable beam from a beam head are directed.
Abstract translation:本发明涉及一种用于制造表面合金圆柱形,部分圆柱形或中空圆柱形结构构件的方法,其中在能量束的入射区域中形成具有加热和熔融前沿的局部有界熔融浴,溶液区和 凝固前线。 在能量束的侧面,硬质材料粉末通过输送装置在重力方向沉积,并且以对应于线性焦点的宽度的宽度与工件的进给运动一致地提供一层 由此产生0.3-3mm的高度。 在熔融槽的加热前端供给到工件表面的硬质材料粉末通过波长为780-940nm的能量束加热,并与液化基质合金接触,将粉末立即溶解在熔融槽中。 通过能量束产生对流,其能量束具有至少104W / cm 2的比功率,使得在熔融区中的均匀化过程被加速,其中线性焦点作用在溶液区上,直到硬质材料粉末为 均匀分布在熔池中。 在能量束的前面,在溶液区域中冶金化成溶液的均匀分布的粉末材料在固化前沿以200-600K / s的高冷却速率以500的进料速率进行定向凝固 -10,000 mm / min。 本发明还涉及一种用于实施该方法的装置,其包括工件夹持装置,工件在其上对准并夹紧在分度孔和/或工作表面上方,在其表面上具有来自梁的粉末供应源和聚焦梁 头指向。
Abstract:
An apparatus for placing particles onto a substrate, methods for using the apparatus to deposit particles on a substrate and substrates prepared using the apparatus are disclosed. The apparatus includes a rotary screen, a blade disposed for directing and urging the particles through the screen, and a sheet mounted in a position to receive the particles from a feeder and deliver the particles to the rotary screen substantially across the blade. The apparatus can include a frame on which a rotary screen is rotatably mounted and a feed system disposed within and extending substantially along the length of the screen for distributing the particles. The apparatus can optionally include a vacuum means, an anti-static means and/or collection pans for handling stray particles. The screen can include a series of openings in the form of a pattern, and can be used to place particles in a pattern in register with a design or pattern on a substrate as the substrate passes under the openings in the screen.
Abstract:
The invention is directed to a method and device for routing, mixing, or reacting droplets or liquid microstreams along the surface of a flat substrate. The flow of liquid microstreams or microdroplets along designated pathways is confined by chemical surface patterning. Individually addressable heating elements, which are embedded in the substrate, can be used to generate flow via thermocapillary effects or to trigger or quench chemical reactions. The open architecture allows the liquid to remain in constant contact with the ambient atmosphere. The device can be used for microfluidic applications or as a surface reactor or biosensor, among other applications.
Abstract:
In one aspect, a method of nanolithography is provided using a driving force to control the movement of a deposition compound from a scanning probe microscope tip to a substrate. Another aspect of the invention provides a tip for use in nanolithography having an internal cavity and an aperture restricting movement of a deposition compound from the tip to the substrate. The rate and extent of movement of the deposition compound through the aperture is controlled by a driving force.
Abstract:
In one aspect, the invention provides ink receptor compositions capable of receiving and fixing a water resistant image on a substrate without bleeding, feathering, or smudging. The ink receptor compositions comprise colloidal alumina; multivalent metal ion; hydrophilic binder; hydrophobic latex; surfactant; and optionally an image transfer aid. In other aspects, the invention provides methods of imaging substrates, ink receptor media, and ink receptor kits.
Abstract:
The present invention relates generally to a method and apparatus for converting a precursor material, preferably organometallic, to a film, preferably metal-containing, that is adherent to at least a portion of a substrate. Both method and apparatus include a pre-conversion step or section, and a step or section for substantial conversion of a portion of material from the pre-conversion step or section into the form of a predetermined pattern, wherein this substantial conversion results in a metal-containing patterned layer on the substrate.
Abstract:
A fluorescent thin film is provided, comprising a matrix material containing as a main component a rare earth sulfide or a rare earth selenide and a rare earth element added thereto as a light emission center. The rare earth element is different from a rare earth element used for said matrix material.
Abstract:
A method for damping vibration of a substrate comprises the step of applying a liquid material onto the substrate in an ambient environment, wherein, after application to the substrate, the material cures substantially instantaneously in the ambient environment. The damping composition usable therefor comprises a resin component and an isocyanate component. The resin component includes a polymer(s) for imparting tensile strength, hardness and flexibility; an optional chain extender(s) for imparting tensile strength, weatherability, flexibility, adhesion to specific substrates, and hardness; and an optional filler for imparting hardness, flexibility, and specific noise, vibration and harshness blocking characteristics to the after-application, cured surface. The isocyanate component of the composition includes an isocyanate quasi-prepolymer(s) based on a uretonimine modified MDI and a high molecular weight polyether polyol having an isocyanate equivalent content of 15.8% and a 2,4null-isomer content of less than about 15%; and an optional plasticizer(s) for imparting flexibility.