摘要:
A nanocomposite comprising a plurality of nanoparticles dispersed in a metallic alloy matrix, and a structural component formed from such a nanocomposite. The metallic matrix comprises at least one of a nickel-based alloy and an iron-based alloy. The nanocomposite contains a higher volume fraction of nanoparticle dispersoids than those presently available. The structural component include those used in hot gas path assemblies, such as steam turbines, gas turbines, and aircraft turbine. A method of making such nanocomposites is also disclosed.
摘要:
Nano-multilayered structures, components and associated methods of manufacture suitable for use in high-temperature applications including a plurality of metallic alloy layers, wherein the thickness of each of the plurality of metallic alloy layers is on a nano scale, and a plurality of ceramic oxide layers disposed between the plurality of metallic alloy layers in an alternating manner, wherein the thickness of each of the plurality of ceramic oxide layers is on a nano scale.
摘要:
A mechanical seal includes a pair of opposing seal faces, wherein at least one of the pair of seal faces comprises a multilayer coating disposed on a substrate, and wherein the multilayer coating comprises a periodic repetition of distinct layers. In another embodiment, the mechanical seal includes a pair of opposing seal faces, wherein at least one of the pair of seal faces comprises a multilayer coating disposed on a substrate, wherein the multilayer coating comprises a plurality of layers of a composite, and wherein no two adjacent layers of the composite comprise an identical ratio of composite constituents. A method includes disposing a multilayer coating on a substrate to form at least one of a pair of opposing seal faces of a mechanical seal.
摘要:
A wear resistant coating including a hard backing including a metal alloy matrix dispersed with a plurality of hard particles; and a plurality of nano-layers disposed on the hard backing is provided. The plurality of nano-layers has different characteristics from one another. A method of making a wear resistant coating is provided. The method includes the steps of providing a substrate; disposing a hard backing; and disposing a plurality of nano-layers on the hard backing.
摘要:
Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.
摘要:
Erosion resistant coating compositions include hard particles in a metal matrix such as nickel-based, cobalt-based and iron-based matrices applied by a plating process for complex geometry or hard to access component surfaces or by thermal spray processes for line of sight applications. These materials and processes are especially suited for providing erosion resistance to hydroelectric turbine components.
摘要:
Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.
摘要:
A system for measuring one or more physical properties of cementitious material is operable to cure a slurry of cementitious material under desired conditions of temperature and pressure. Particularly, the system may be operable to cure the slurry under a temperature and pressure expected to be experienced downhole. The system may also be used to determine properties of the cured cementitious material, such as maximum yield strength and shear bond strength at the desired temperature and pressure. The desired conditions of temperature and pressure may be applied both during curing and testing of the cementitious material.
摘要:
A process for providing a protective layer to an article. The process includes depositing a layer of material onto a surface of the article with a thermal spray process. Examples of thermal spray process include high velocity oxygen/air fuel, atmospheric plasma spray, and chemical vapor deposition. Coating methods, such as cold vapor deposition and physical vapor deposition, may also be used. The layer can then be bonded to the article by heating material in the layer adjacent its connection with the article. Bonding the layer to the article can be performed by irradiating the layer with a collimated light source, the layer irradiation can be applied concurrently with the thermal spray process
摘要:
Cement is conditioned, cured and/or tested while applying a specified temperature and/or pressure. In certain embodiments, the specified temperature and/or pressure applied during the testing substantially simulates anticipated static downhole conditions the cement will be subjected to in use. In certain embodiments, the specified temperature and/or pressure applied during the receiving substantially simulates pumping placement conditions the cement will be subjected to in use. In certain embodiments, the cement can be conditioned in a conditioning vessel while applying specified temperature and/or pressure to the cement. In certain embodiments, the temperature and/or pressure applied in the conditioning substantially simulates anticipated pumping placement conditions the cement will be subjected to in use.