Abstract: A part has a layer with a WC-C composition gradient, with the exception of a metal-containing undercoat and with the exception of an ion implantation layer and a DLC surface layer having cohesive behavior in scratch tests.

Abstract: The device includes at least two coaxial waveguides each formed of a central conductor and of an external conductor to bring microwaves into a treatment chamber. The at least two electromagnetic wave injection guides are combined with a magnetic circuit elongated in one direction. The magnetic circuit surrounding the waveguides by creating a magnetic field capable of achieving an ECR condition close to the waveguides.

Abstract: The lubricated environment incorporates a friction modifier, and a coating is applied to the part. The coating is chromium nitride and the friction modifier is MoDTC. The chromium nitride presents an NaCl-type crystallization and a microhardness of 1,800 +/?200 HV.

Abstract: A method of treating a surface of at least one part by individual sources of an electron cyclotron resonance plasma is characterized by subjecting the part(s) to at least one movement of revolution with regard to at least one fixed linear row of elementary sources. The linear row or rows of elementary sources are disposed parallel to the axis or axes of revolution of the part or parts.

Abstract: A part has a layer with a WC-C composition gradient, with the exception of a metal-containing undercoat and with the exception of an ion implantation layer and a DLC surface layer having cohesive behaviour in scratch tests.

Abstract: A method for fabricating a heating a element includes modifying the surface state of a substrate in order to obtain at least one smooth area of low roughness and at least one rough area having a higher roughness; applying a highly electrically conductive material to these various areas; and connecting smooth area(s) of the conductive material to an electrical power source.

Abstract: According to the method, drops of an adhesive material are deposited on one of the plates, with the drops being spaced from one another. A grid having a predefined thickness lower than that of the drops is applied to the plate receiving the drops. A perpendicular and uniform pressure is applied to at least one of the plates, so that the drops spread and come into contact with the opposing sides of the two plates. The spacing of the drops is defined so that after spreading under the pressure applied, air is not trapped between the drops.

Abstract: A method for fabricating a heating a element includes modifying the surface state of a substrate in order to obtain at least one smooth area of low roughness and at least one rough area having a higher roughness; applying a highly electrically conductive material to these various areas; and connecting smooth area(s) of the conductive material to an electrical power source.

Abstract: A method of treating a surface of at least one part by individual sources of an electron cyclotron resonance plasma is characterized by subjecting the part(s) to at least one movement of revolution with regard to at least one fixed linear row of elementary sources. The linear row or rows of elementary sources are disposed parallel to the axis or axes of revolution of the part or parts.

Abstract: A coating includes a thin film which is intended to protect a corrodible part against corrosion and, to some extent, against wear and friction. The coating essentially includes a composition containing silicon, carbon, hydrogen and nitrogen such that: the atomic hydrogen concentration, measured using the ERDA technique, is 20 ±5 atoms %; the atomic silicon concentration, measured using the Rutherford backscattering (RBS) technique, is between 15 and 28 atoms %; the ratio of the atomic concentrations of nitrogen and carbon (N/C) is greater than 0.9; and the hardness of the material is less than or equal to 2100 daN/mm2.

Abstract: According to the method, drops of an adhesive material are deposited on one of the plates, with the drops being spaced from one another. A grid having a predefined thickness lower than that of the drops is applied to the plate receiving the drops. A perpendicular and uniform pressure is applied to at least one of the plates, so that the drops (3) spread and come into contact with the opposing sides of the two plates. The spacing of the drops is defined so that after spreading under the pressure applied, air is not trapped between the drops.

Abstract: The invention relates to a coating comprising a thin film which is intended to protect a corrodible part against corrosion and, to some extent, against wear and friction, said coating essentially comprising a composition containing silicon, carbon, hydrogen and nitrogen such that: the atomic hydrogen concentration, measured using the ERDA technique, is 20±5 atoms %; the atomic silicon concentration, measured using the Rutherford backscattering (RBS) technique, is between 15 and 28 atoms %; the ratio of the atomic concentrations of nitrogen and carbon (N/C) is greater than 0.9; and the hardness of the material is less than or equal to 2100 daN/mm2.

Abstract: Ferrous alloy parts are immersed in a bath of an aqueous solution, without passage of an electric current. The solution comprises caustic soda at concentrations of between 400 and about 1000 f/l, sodium thiosulphate at concentrations of between 30 and about 300 g/l, and sodium sulphide at concentrations of between 60 and about 120 g/l. The solution is heated to a temperature between about 100° C. and 140° C. for a period of between 5 and about 30 minutes.

Abstract: A device (1) for amplifying the current of an abnormal electrical discharge, characterized in that it comprises an electrode which is positively polarized (2) and associated with a magnetic circuit (3) producing a magnetic field (4) which is uniformly divergent, whereby the intensity on the surface of the electrode is more than approximately 6.102 Tesla, the electrode being positioned in the region where the magnetic field is at its most intense.

Abstract: A surface coating on an insulative material substrate, assuring protection against electromagnetic interference in corrosive environments, comprises two stacked metallic layers. The first layer, in contact with the substrate, is a layer of nickel-based alloy containing about 2% to 20% by weight of an element from group V B from the Periodic Table of the Elements. The second, surface layer is a layer of silver or one or its alloys. Applications include insulative material cases for electrical or electronic components including a shield consisting of a surface coating of this kind.

Abstract: There is disclosed a titanium nitride doped with boron crystallizing with the same structure as titanium nitride TiN and having a Vickers microhardness greater than approximately 50 GPa. There is also disclosed an anti-wear coating comprising this titanium nitride doped with boron. There are also disclosed parts such as metal parts, tungsten carbide parts and cermet parts, for example, including a coating of this type.