Abstract: The invention relates to a method for the anti-corrosion processing of a part that comprises the step of spray deposition of a zirconium and/or zirconium alloy layer onto the surface thereof.

Abstract: The invention relates to a process for coating or hardfacing recharging a part by means of a plasma transferred arc.According to the process, on the part (1) to be coated or hardface is deposited at least one weld bead (7a, 7b, 7c) of said material solely by means of the plasma transferred arc (5), by moving the plasma relative to the part at a speed of 1.5 to 50 m/min and using a power of the plasma such that the surface of the part is melted over a thickness at the most equal to 0.5 mm and so that the enlargement of the grains in the melted area does not exceed 10%, without cooling the part during recharging.

Abstract: The invention relates to a ribbon or bead for coating by torch spraying and its use For depositing a quasi-crystalline phase on a substrate. The bead or ribbon (1) comprises a core having an organic binder and a powder or a mixture of powders able to Form a quasi-crystalline alloy, said core being surrounded by an organic material sheath. It makes it possible to deposit a quasi-crystalline alloy on a substrate whilst preparing said alloy in the flame (3) of a spraying apparatus and using commercial powders of the constituents of the quasi-crystalline alloy.

Abstract: The invention relates to a recharging or reloading bead incorporating discontinuous fibres or at least one reinforcing wire.This bead comprises a core reinforced by discontinuous fibres or at least one continuous wire (6) made from a non-fragile material, which melts or burns at a temperature equal to or above 500.degree. C., e.g. a weldable alloy or metal, such as copper or stainless steel. It also comprises an outer sheath (9b) made from an organic substance.It can be produced by the co-extrusion or co-spinning of two pastes.

Abstract: Process for the production of a sensitive plate for an exoelectron dosimeter by producing on a support a deposit of a mixture of two compositions constituted on the one hand by a substance having traps for the electrons and able to emit exoelectrons by thermal or optical stimulation and on the other by a substance having a good ionic conductivity, wherein it comprises making a homogeneous mixture of the powders constituting the two said compositions, producing by means of a plasma arc torch a plasma jet in the vicinity of the support on which the deposit is to be made and spraying said powder mixture into the jet to obtain a deposit which adheres to the support.The exoelectron dosimeter comprises a support to which adheres a plate constituted by two substances, one of which has traps for the electrons and is able to emit exoelectrons by thermal or optical stimulation and the other has a good ionic conductivity.