The disclosure provides a fully new method for hot-dip metal coating treatment, as a method for treating surfaces of a metal strip by hot-dip metal coating, by which inherent issues in conventional immersion coatings and spray coatings are avoided. In the disclosed method for hot-dip metal coating treatment, a surface of a metal strip is coated by discharging a droplet of a molten metal toward the surface of the metal strip, using a nozzle system configured to discharge the droplet of the molten metal from a nozzle due to an action of the Lorentz force generated on the molten metal by sending an electric current to the molten metal in a chamber, the chamber being applied with magnetic flux in a given direction, while the electric current sent in a direction perpendicular to the given direction.

A method for applying a composition to a substrate, and a downhole component, of which the method includes thermal spraying a layer of the composition onto the substrate, the substrate being provided by a downhole component, the layer resulting from the thermal spraying having a thickness of at least about 0.10 inches and being configured to remain bonded to the downhole component when used downhole in a well, the composition being chromium-free.

A composition, method for depositing the composition on a downhole component, and a downhole tool. The composition includes about 0.25 wt % to about 1.25 wt % of carbon, about 1.0 wt % to about 3.5 wt % of manganese, about 0.1 wt % to about 1.4 wt % of silicon, about 1.0 wt % to about 3.0 wt % of nickel, about 0.0 to about 2.0 wt % of molybdenum, about 0.7 wt % to about 2.5 wt % of aluminum, about 1.0 wt % to about 2.7 wt % of vanadium, about 1.5 wt % to about 3.0 wt % of titanium, about 0.0 wt % to about 6.0 wt % of niobium, about 3.5 wt % to about 5.5 wt % of boron, about 0.0 wt % to about 10.0 wt % tungsten, and a balance of iron.

The present application provides Calcia-Magnesia-Alumina-Silica (CMAS) (or molten silicate) resistant thermal barrier coatings (IBC). The coatings include elongate growth domains of non-equiaxed, randomly arranged overlapping grains or splats. The elongate growth domains include overlapping individual, randomly distributed splats of tough and soft phases. In some embodiments, the elongate growth domains are formed via air plasma spray. In some embodiments, the tough phases are at least partially stabilized zirconia and/or hafnia compositions, and the soft phases are CMAS (or molten silicate) reactive or resistant compositions. Within each elongate growth domain, the mixture of the tough and soft phases act together to limit penetration of CMAS and also provide sufficient domain toughness to minimize cracking forces produced during crystallization of infiltrated CMAS. The soft phases may react with the CMAS and increase its melting point, increase its viscosity, and reduce the destabilization of the tough phases.

A powder coating apparatus for attaching powder to a film includes a forwarding roll which forwards the film; a take-up roll which is arranged on the downstream side of a conveyance direction of the film with respect to the forwarding roll and which takes up the film; a film-forming nozzle which is arranged between the forwarding roll and the take-up roll in the conveyance direction so as to be opposed to the film and which jets the powder; a first casing or a second casing which accommodates the forwarding roll and the take-up roll; an apparatus casing which accommodates the film-forming nozzle, the first casing, and the second casing; and a pressure adjustment unit configured to set an internal pressure of the first casing and the second casing to be higher than an internal pressure of the apparatus casing.

A powder coating apparatus for attaching powder to a film includes a forwarding roll which forwards the film; a take-up roll which is arranged on the downstream side of a conveyance direction of the film with respect to the forwarding roll and which takes up the film; a film-forming nozzle which is arranged between the forwarding roll and the take-up roll in the conveyance direction so as to be opposed to the film and which jets the powder; a first casing or a second casing which accommodates the forwarding roll and the take-up roll; an apparatus casing which accommodates the film-forming nozzle, the first casing, and the second casing; and a pressure adjustment unit configured to set an internal pressure of the first casing and the second casing to be higher than an internal pressure of the apparatus casing.

A plasma spraying method for coating a cylinder barrel of a cylinder crankcase of a reciprocating internal combustion engine. A coating method is provided, with the aid of which the formation of oxides is limited or oxide banding in the layer formation and thus negative influences are avoided due to oxidation outbreaks and microgroove formation are avoided. The coating is applied to the cylinder barrel of the cylinder crankcase at least partially using the following parameter combination: rotational speed: 600 to 800 revolutions/minute; sprayed material delivery rate: 80 to 180 grams/minute; and feed rate: 24 to 75 mm/s.

The present invention provides a thermally sprayed coating that is a thermally sprayed iron-based coating formed on an inner circumferential surface of a cylinder bore of an aluminum or aluminum alloy cylinder block. The thermally sprayed coating has a plastic deformation part on its surface. Thus, pores on the surface of the thermally sprayed coating are reduced, resulting in a reduction in the amount of oil consumption.

The present invention provides a thermally sprayed coating that is a thermally sprayed iron-based coating formed on an inner circumferential surface of a cylinder bore of an aluminum or aluminum alloy cylinder block. The thermally sprayed coating has a plastic deformation part on its surface. Thus, pores on the surface of the thermally sprayed coating are reduced, resulting in a reduction in the amount of oil consumption.

A composition and a coating structure applying with the same are provided. The composition includes 3 wt % to less than 15 wt % of Al, 10 wt % to less than 30 wt % of Cr, higher than 0 wt % to 15 wt % of O, higher than 0 wt % to 15 wt % of Y, and the remainder being at least one of Co or Ni.