Abstract:
A brush seal having bristles of a diameter of between 0.005 mm to 0.02 mm manufactured from an oxidation resistant metal alloy including between 10 and 60% cobalt as a base alloy having no more than 1% creep after a 1000 hours at 650° C. at a pressure of at least 345 Pa.
Abstract:
A multilayer coating system is provided. The multilayer coating system includes a substrate, a first metallic layer on the substrate, a first ceramic layer on the first metallic layer, a second metallic layer on the first ceramic layer, and an outermost ceramic layer on the second metallic layer. The multilayer coating system achieves a relatively high overall layer thickness since the critical layer thicknesses of the individual layers do not exceed the multilayer coating.
Abstract:
The present invention relates to a method of repairing intake coatings (12), in particular intake coatings for use in compressor and turbine components, wherein the process comprises the following steps: a) filling of a damaged place (10) of the inlet coating (12) with a material (18) whose material composition corresponds to that of the intake coating (12) or is comparable to this or whose materials properties are comparable to the materials properties of the intake coating (12); b) drying of the material (18) introduced into the damaged place (10); c) application of a diffusion donor layer (20) over the region of the damaged place (10) and onto the introduced material (18); and d) heat treatment of the intake coating (12) at least in the region of the damaged place (10) to effect local diffusion of at least one metallic element from the diffusion donor layer (20) into the introduced material (18).
Abstract:
A compressor using a refrigerant containing a compound having a double bond characterized in that any one selected from a Fe—P-based electroplated film, a Fe—W-based electroplated film, a Fe—C-based electroplated film, a Fe—N-based electroplated film, a Co-based electroplated film, a Co—W-based electroplated film, a Cr-based electroplated film, a Cr—Mo-based electroplated film, a resin-coated film and a DLC-surface-treated film is employed as a coating layer for an internal structural member. The occurrence of an additional reaction of the refrigerant containing a compound having a double bond can be suppressed, and an excellent performance of the compressor can be exhibited for a long term.
Abstract:
A system in a turbine engine for preventing wear on a tip shroud of a turbine blade that includes a pocket formed in a contact surface of the tip shroud and a plug that fits within the pocket and has a durable outer surface. The durable outer surface may include a cobalt-based hardfacing powder. The pocket may be machined out of the contact surface, and the plug may include a plug of predetermined size that fits snugly into the pocket. In some embodiments, the durable outer surface may substantially align with the contact surface after the plug is fitted into the pocket. In other embodiments, the durable outer surface may remain slightly raised from the contact surface after the plug has been fitted into the pocket.
Abstract:
The invention provides a high-temperature component for a turbomachine, in particular for a blade or vane having a main blade or vane part and a blade or vane root, the high-temperature component at least partially comprising, as base material, a porous material which is filled with a viscous filler and is surrounded by a solid layer.
Abstract:
A sintered material and a method for the production thereof is described. The material comprises an alloy selected from one of the groups having a composition comprising in weight %: either Cr 5-30/Mo 0-15/Ni 0-25/W 0-15/C 0-5/Si 0-5/Fe 0-5/Mn 0-5/others 10 max/Co balance, or Cr 10-20/Mo 0-15/Co 0-20/W 0-5/Fe 0-20/Al 0-5/Ti 0-5/others 15 max/Ni balance; said alloy having incorporated therein from 3-15 weight % of Sn; and optionally from 1-6 weight % of a solid lubricant material.
Abstract translation:对烧结材料及其制造方法进行说明。 该材料包括选自以下组中的一种的合金:具有重量%的组成:Cr 5-30 / Mo 0-15 / Ni 0-25 / W 0-15 / C 0-5 / Si 0-5 / Fe 0-5 / Mn 0-5 /其他10最大/ Co平衡,或Cr 10-20 / Mo 0-15 / Co 0-20 / W 0-5 / Fe 0-20 / Al 0-5 / Ti 0 -5 /其他15最大/镍平衡; 所述合金从其中加入3-15重量%的Sn; 和任选的1-6重量%的固体润滑剂材料。
Abstract:
A piston ring for use at temperatures above 350° F. at pressures greater than or equal to about 2000 psi, comprising a gap having a gap width about 1.4 to about 2.0 times greater than a thickness of the piston ring; a height about 4.5 to about 6.4 times larger than the thickness, and a leading edge characterized by an arc having a radius of curvature of less than or equal to about 4 times the height. The piston ring may be formed of a material comprising cobalt, chromium, tungsten, and carbon. A gas compressor and method of sealing a piston using the above piston ring is also provided for.
Abstract:
A novel blade configuration does not exceed the permitted stresses for particular loads, especially as a result of centrifugal forces and which at the same time, allows the turbomachine to function with a high degree of efficiency. To this end, a moving blade for the turbomachine contains at least partially a cellular material, especially a foamed metal. The cellular material can be provided e.g. in the hollowed-out part of the moving blade.
Abstract:
An article protected by a thermal barrier coating system includes a substrate having a substrate surface, and a thermal barrier coating system overlying the substrate. The thermal barrier coating system has a thermal barrier coating formed of a thermal barrier coating material arranged as a plurality of columnar grains extending generally perpendicular to the substrate surface and having grain surfaces. A sintering inhibitor is within the columnar grains, either uniformly distributed or concentrated at the grain surfaces. The sintering inhibitor is lanthanum oxide, lanthanum chromate, chromium oxide, and/or yttrium chromate, mixtures thereof, mixtures thereof with aluminum oxide, modifications thereof wherein cobalt or manganese is substituted for chromium, precursors thereof, and reaction products thereof.