Abstract: Methods of deposition of a coating on a surface of a workpiece, working with at least one deposition device, or torch, of thermal spray type, controlled by an associated motor. It is contemplated to perform the deposition step by configuring the torch so as to create two concurrent movements, of which a first movement along a linear path on the surface area to be coated; a second oscillation movement according to an axis of rotation coaxial with said advancement direction; this allows increasing the spray pattern of the thermal spray torch at each stroke resulting in a reduction of the relative movement speed of the torch itself. Also provided are a thermal spray deposition torches and apparatuses for depositing a coating on a surface of a workpiece.

Abstract: Plasma spray apparatus for coating substrates, including at least a working chamber including a plasma torch and at least a substrate support, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to the normal pressure, and at least a gas circuit, in communication with said working chamber, including recirculating means of the inert gases contained in said working chamber. The recirculating means include a closed loop, including a blower and a first heat exchanger communicating with said working chamber for extracting the inert gases and supplying a first fraction of the cooled inert gases back into a first portion of the working chamber, and at least a path, communicating with said closed loop and including a compressor and a second heat exchanger for supplying a second fraction of the cooled inert gases into a second portion of the working chamber.

Abstract: Plasma spray apparatus for coating substrates, including at least a working chamber including a plasma torch and at least a substrate support, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to the normal pressure, and at least a gas circuit, in communication with said working chamber, including recirculating means of the inert gases contained in said working chamber. The recirculating means include a closed loop, including a blower and a first heat exchanger communicating with said working chamber for extracting the inert gases and supplying a first fraction of the cooled inert gases back into a first portion of the working chamber, and at least a path, communicating with said closed loop and including a compressor and a second heat exchanger for supplying a second fraction of the cooled inert gases into a second portion of the working chamber.

Abstract: Plasma spray apparatus for coating substrates, including at least a working chamber including a plasma torch and at least a substrate support, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to the normal pressure, and at least a gas circuit, in communication with said working chamber, including recirculating means of the inert gases contained in said working chamber. The recirculating means include a closed loop, including a blower and a first heat exchanger communicating with said working chamber for extracting the inert gases and supplying a first fraction of the cooled inert gases back into a first portion of the working chamber, and at least a path, communicating with said closed loop and including a compressor and a second heat exchanger for supplying a second fraction of the cooled inert gases into a second portion of the working chamber.

Abstract: Method of deposition of a coating on a surface of a workpiece, working with at least one deposition device, or torch, of Thermal Spray type, controlled by an associated motor. It is contemplated to perform the deposition step by configuring the torch so as to create two concurrent movements, of which a first movement along a linear path on the surface area to be coated; a second oscillation movement according to an axis of rotation coaxial with said advancement direction; this allows increasing the spray pattern of the thermal spray torch at each stroke resulting in a reduction of the relative movement speed of the torch itself.

Abstract: A torch (1) for thermal spraying of surface coatings, of the type that comprises a head (3) and a bracket (2) for the head (3), in which the head (3) pivots relative to the bracket (2). The invention also relates to the coatings obtained using the torch, whether of polymer, metal or ceramic materials, on any substrate coated thereby, whether of polymer, metal or ceramic or composite materials. The invention is applicable to different types of thermal spray torches, using plasma spray, combustion spray, High Velocity Oxygen Fuel (HVOF), or Low Velocity processes.

Abstract: A process for surface preparation of parts to be coated using Thermal Spray or Cold Spray technologies, which is the result of a step in which the relevant surface is abraded by steel-based abrasive material, and later washing off of any residue thereof.

Abstract: A method for coating prosthesis elements that have a concave surface and a corresponding convex counter surface includes arranging in at least the concave surface a shaped retention surface for gripping a coating. The coating is coupled with the shaped retention surface such that coupling includes coating the concave surface with the coating temporarily in a moldable state to obtain a moldable coating. The moldable coating is made to solidify and adhere firmly to the shaped retention surface.

Abstract: A process for surface preparation of parts to be coated using Thermal Spray or Cold Spray technologies, which is the result of a step in which the relevant surface is abraded by steel-based abrasive material, and later washing off of any residue thereof.

Abstract: A torch (1) for thermal spraying of surface coatings, of the type that comprises a head (3) and a bracket (2) for the head (3), in which the head (3) pivots relative to the bracket (2). The invention also relates to the coatings obtained using the torch, whether of polymer, metal or ceramic materials, on any substrate coated thereby, whether of polymer, metal or ceramic or composite materials. The invention is applicable to different types of thermal spray torches, using plasma spray, combustion spray, High Velocity Oxygen Fuel (HVOF), or Low Velocity processes.

Abstract: The invention is directed to anti-corrosive alloys and relates in particular to an alloy containing cobalt, chromium, aluminum, yttrium, silicon, a metal from the second main group, together with the corresponding oxide, in the following proportions: chromium (Cr) 26.0-30%; aluminum (Al) 5.5-13.0%; yttrium (Y) 0.3-1.5%; silicon (Si) 1.5-4.5%; metal from the second main group (magnesium, calcium, barium, strontium) 0.1-2.0%; oxide of the corresponding metal from the second main group 0.1-2.0%; cobalt (Co) remaining percentage. Preferably, tantalum (Ta) is also added in a proportion of 0.5-4.0%, and the remaining percentage of cobalt is replaced by a remaining percentage of Me, Me being understood to mean a metal which may be nickel (Ni) or iron (Fe) or cobalt (Co) or a composition comprising Ni—Fe—Co, Ni—Fe, Ni—Co, Co—Fe.