Abstract: A centrifugal pump component for an oil and gas well pump includes a substrate with an outer surface configured to contact oil and gas well fluid. The component further includes a coating formed on at least a portion of the outer surface. The coating includes a combination of hard particles and a metal matrix.

Abstract: A method of protecting slurry handling equipment is presented which involves (a) identifying one or more types of wear events (erosion, abrasion, corrosion) to which a surface of the slurry handling equipment is susceptible during operation; (b) estimating the severity of each type of wear event the surface will experience during operation; and (c) applying one or more of a thermal spray coating comprising a metal carbide or a metal nitride, and an erosion resistant organic coating to the surface. The types and severity of the wear events are predicted using one or more computational fluid dynamics models, and the application of either or both of the thermal spray coating and the erosion resistant organic coating to the surface is predicated on the types of wear events identified and their estimated severity. In addition, slurry handling equipment and components thereof protected using the method are provided.

Abstract: A pump for an oil and gas well includes a barrel with a surface configured to contact oil and gas well fluid. The pump further includes a first coating formed on at least a portion of the barrel surface. The first coating includes a combination of diamond particles and a composition including nickel and phosphorous. The pump also includes a plunger with a surface configured to contact oil and gas well fluid. The pump additionally includes a second coating formed on at least a portion of the plunger surface. The second coating includes a combination of tungsten carbide particles and a composition including cobalt and chromium.

Abstract: A system for use in coating an interior surface of an object is provided. The system includes a vacuum chamber enclosure defining an interior configured to receive the object, and a cathode coupled to the vacuum chamber enclosure. The cathode is fabricated from a coating material and has an outer surface. The cathode is configured such that when a current is applied to the cathode, an arc is formed on the outer surface and the coating material is removed from the cathode to form a cloud of coating material. The system also includes a collimator configured to be positioned between the cathode and the object configured to focus the cloud into a beam of coating material and to direct the beam towards the object, and a magnet configured to alter a path of the beam such that the beam is directed towards the interior surface of the object.

Abstract: There is provided a fuel rod assembly comprising a first component of a zirconium-based material. The first component is in contact with or is located adjacent to a second component of a material different from the zirconium-based material, e.g. a nickel-based or iron-based alloy. A coating is disposed on an outer surface of the first component, which is effective to reduce an electrochemical corrosion potential difference between the first component and the second component relative to an electrochemical corrosion potential difference between the first component and the second component without the coating.

Abstract: A pump for an oil and gas well includes a barrel with a surface configured to contact oil and gas well fluid. The pump further includes a first coating formed on at least a portion of the barrel surface. The first coating includes a combination of diamond particles and a composition including nickel and phosphorous. The pump also includes a plunger with a surface configured to contact oil and gas well fluid. The pump additionally includes a second coating formed on at least a portion of the plunger surface. The second coating includes a combination of tungsten carbide particles and a composition including cobalt and chromium.

Abstract: A centrifugal pump component for an oil and gas well pump includes a substrate with an outer surface configured to contact oil and gas well fluid. The component further includes a coating formed on at least a portion of the outer surface. The coating includes a combination of hard particles and a metal matrix.

Abstract: One aspect of the present invention includes an article. The article includes a substrate and a coating disposed on the substrate, wherein the coating includes a plurality of cermet particles bonded along their prior particle boundaries. The plurality of cermet particles have a median particle size less than about 5 microns and less than 25 percent of the plurality of cermet particles include melted and re-solidified particles. Gate valves are also presented.

Abstract: A seal system, for an apparatus that includes a rotatable portion with airfoils coupled thereto and a stationary portion with an inner surface, includes an abradable portion including at least one abradable layer of an abradable material formed over the inner surface. The seal system also includes an abrading portion disposed over at least a portion of a substrate of the airfoil. The abrading portion includes at least one abrading layer formed on at least a portion of the substrate and a plurality of abrasive particles embedded within the abrading layer. The plurality of abrasive particles includes at least one of substantially all of one of tantalum carbide (TaC), aluminum oxide (Al2O3), and ziconia (ZrO2), cubic boron nitride (cBN) and Al2O3 in predetermined ratios, cBN, Al2O3 and ZrO2 in predetermined ratios, Al2O3 and ZrO2 fused together in predetermined ratios, and TaC and Al2O3 in predetermined ratios.

Abstract: A composite composition that includes an MCrAlX alloy and a nano-oxide ceramic is disclosed. In the formula, M includes nickel, cobalt, iron, or a combination thereof, and X includes yttrium, hafnium, or a combination thereof, from about 0.001 percent to about 2 percent by weight of the alloy. The amount of the nano-oxide ceramic is greater than about 40 percent, by volume of the composition. A protective covering that includes the composite composition is also disclosed. The protective covering can be attached to a tip portion of a blade with a braze material. A method for joining a protective covering to a tip portion of a blade, and a method for repair of a blade, are also provided.

Abstract: A method of fabricating a component is provided. The component includes a substrate that has at least one interior space. The method includes forming one or more grooves in the component. Each groove extends at least partially along an outer surface of the substrate and narrows at an opening thereof, such that each groove is re-entrant shaped. A cross-sectional area A of each groove is in a range of about 2 to about 3 times an area R=W*D, where W is the width of the opening and D is the depth of the re-entrant-shaped groove. Components with grooves formed in the substrate and components with grooves formed at least partially in a structural coating are also provided.

Abstract: A composite composition that includes an MCrAlX alloy and a nano-oxide ceramic is disclosed. In the formula, M includes nickel, cobalt, iron, or a combination thereof, and X includes yttrium, hafnium, or a combination thereof, from about 0.001 percent to about 2 percent by weight of the alloy. The amount of the nano-oxide ceramic is greater than about 40 percent, by volume of the composition. A protective covering that includes the composite composition is also disclosed. The protective covering can be attached to a tip portion of a blade with a braze material. A method for joining a protective covering to a tip portion of a blade, and a method for repair of a blade, are also provided.

Abstract: A submersible pump component is provided. The component includes a substrate including an outer surface in a plurality of orientations, wherein a first portion of the outer surface is configured to be worn by a first wear mechanism, and a second portion of said outer surface is configured to be worn by a second wear mechanism. The component also includes at least one layer of a first coating applied to the outer surface, and at least one layer of a second coating applied over said first coating at said second portion of said outer surface. The first coating is configured to inhibit the first wear mechanism at the first portion of the outer surface, and the second coating is configured to inhibit the second wear mechanism at the second portion of the outer surface.

Abstract: A system for use in coating an interior surface of an object is provided. The system includes a vacuum chamber enclosure defining an interior configured to receive the object, and a cathode coupled to the vacuum chamber enclosure. The cathode is fabricated from a coating material and has an outer surface. The cathode is configured such that when a current is applied to the cathode, an arc is formed on the outer surface and the coating material is removed from the cathode to form a cloud of coating material. The system also includes a collimator configured to be positioned between the cathode and the object configured to focus the cloud into a beam of coating material and to direct the beam towards the object, and a magnet configured to alter a path of the beam such that the beam is directed towards the interior surface of the object.

Abstract: A plasma deposition assembly for use in coating an interior surface of an object is provided. The assembly includes a head portion including an anode and a cathode adjacent to the anode. The cathode is fabricated from a coating material. The cathode also includes an outer surface adjacent to the interior surface of the object, wherein current is supplied to the cathode to form an arc on the outer surface such that the coating material is directed substantially radially outward from the outer surface of the cathode towards the interior surface of the object. The assembly also includes a moveable arm coupled to the head portion and configured to translate the head portion relative to the interior surface of the object as the arc deposits the coating material on the interior surface of the object.

Abstract: There is provided a fuel rod assembly comprising a first component of a zirconium-based material. The first component is in contact with or is located adjacent to a second component of a material different from the zirconium-based material, e.g. a nickel-based or iron-based alloy. A coating is disposed on an outer surface of the first component, which is effective to reduce an electrochemical corrosion potential difference between the first component and the second component relative to an electrochemical corrosion potential difference between the first component and the second component without the coating.

Abstract: There is provided a fuel rod assembly comprising a first component of a zirconium-based material. The first component is in contact with or is located adjacent to a second component of a material different from the zirconium-based material, e.g. a nickel-based or iron-based alloy. A coating is disposed on an outer surface of the first component, which is effective to reduce an electrochemical corrosion potential difference between the first component and the second component relative to an electrochemical corrosion potential difference between the first component and the second component without the coating.

Abstract: One aspect of the present invention includes an article. The article includes a substrate and a coating disposed on the substrate, wherein the coating includes a plurality of cermet particles bonded along their prior particle boundaries. The plurality of cermet particles have a median particle size less than about 5 microns and less than 25 percent of the plurality of cermet particles include melted and re-solidified particles. Gate valves are also presented.

Abstract: A component is disclosed. The component comprises a substrate comprising an outer surface and an inner surface, where the inner surface defines at least one hollow, interior space, where the outer surface defines one or more grooves, and where each of the one or more grooves extends at least partially along the surface of the substrate and has a base. One or more access holes extend through the base of a respective groove to place the groove in fluid communication with respective ones of the at least one hollow interior space. The component further comprises a coating disposed over at least a portion of the substrate surface, where the coating comprises one or more layers. At least one of the layers defines one or more permeable slots, such that the respective layer does not completely bridge each of the one or more grooves. The grooves and the coating together define one or more channels for cooling the component.

Abstract: The present disclosure is directed to the use and manufacture of cooling features within a component used in a hot gas path, such as within a turbine. In one embodiment, channels are formed within an external surface of the component and filled with a removable material. The external surface and channels may then be coated with one or more layers, such as a structural layer and/or top coat. The removable material may then be removed to leave the channels free of the removable material.