A method for depositing a decorative and/or functional layer on at least a portion of a surface of a finished or semi-finished article made of a non-conductive ceramic material, this deposition method includes the following operations: subjecting the at least a portion of the surface of the article to a carburising or nitriding treatment during which carbon, respectively nitrogen atoms, diffuse in the at least a portion of the surface of the article, then depositing, by galvanic growth of a metallic material, the decorative and/or functional layer on at least a portion of the surface of the article which has undergone the carburising or nitriding treatment.

A method of treating a surface of a mold. A preliminary treatment of dry-ejecting an angular carbide powder against the surface of the mold so as to cause elemental carbon present within the carbide powder to be diffused into the surface of the mold. The carbide powder has particle diameters not larger than those of a 220 grit and the carbide powder being dry-ejected at an ejection pressure of 0.2 MPa or greater. An after-treatment of dry-ejecting a spherical powder against the surface of the mold to cause the spherical powder to impact the surface of the mold and form innumerable circular arc shaped fine depressions. The spherical powder has a hardness not less than the hardness of a base material of metal of the mold and particle diameters not larger than those of a 220 grit and dry-ejected at an ejection pressure of 0.2 MPa or greater.

A method for reinforcing a steel component, having a carbonitriding step providing a first substep of case-hardening, and a second substep of nitriding, the first and second substeps of case-hardening and of nitriding of the step of carbonitriding the component are performed in one and the same heat treatment cycle.

A composite material includes a substrate that is thermochemically treated in order to harden the surface thereof and that is, therefore, not subject to deformations as a result of high stresses sustained by the outer layer. The composite material also includes an adhesion layer overlying the treated layer. Subsequently, an intermediate layer and a DLC (Diamond Like Carbon) layer are added, wherein the DLC layer has a structure based on an amorphous carbon film. The composite material may be used in valves built into submarine equipment. The composite material is thermochemically treated and comprises a treated substrate and an adhesion layer onto which is disposed an intermediate layer that receives a final DLC layer. All of these layers are disposed on the surface of a substrate of a gate valve.

Provided is a method for increasing magnetic induction intensity of soft magnetic metallic materials. The method includes carburizing or carbonitriding the soft magnetic metallic materials with carbon source or a carbonitriding agent by a heat treatment process, to increase the magnetic induction intensity of the soft magnetic metallic materials, wherein the soft magnetic metallic materials are amorphous materials, nanocrystals, silicon steel, or pure iron.

A planetary gear system includes a planetary gear carrier having three or more posts extending from the planetary gear carrier, each post having a hardened exterior surface, and a planet pinion gear in contact with the hardened exterior surface of each post.

The present invention describes a process for coating conductive component in a plasma reactor and a conductive component coating, wherein the process comprises the steps of cleaning, mechanical support deposition, topographic modification by plasma bombardment, chemical support layer deposition and amorphous carbon layer deposition (Diamond-Like Carbon). In one embodiment, the process is in single cycle. The present invention pertains to the fields of Materials Engineering, Physics and Chemistry.

The present invention describes a process for coating conductive component in a plasma reactor and a conductive component coating, wherein the process comprises the steps of cleaning, mechanical support deposition, topographic modification by plasma bombardment, chemical support layer deposition and amorphous carbon layer deposition (Diamond-Like Carbon). In one embodiment, the process is in single cycle. The present invention pertains to the fields of Materials Engineering, Physics and Chemistry.

Metal powder is compacted in a die to produce a preform having a preselected porosity with the metal powder containing iron and having a plurality of particles having a preselected particle sizes. The preform is carburized to produce a high carbon solution in the metal powder. The preform is contacted with an ammonia gas distillation solution to inject nitrogen therein. The preform is heat treated for a predetermined period of time at a predetermined temperature and at a predetermined pressure. The preform is quenched to form a metal part.

The disclosure provides for anti-scale deposition coatings for use on surface, such as on oilfield parts. The coating includes a first, sublayer of a metal, ceramic, or metal-ceramic composite, which is characterized in having a hardness in excess of 35 HRC. The coating includes a second, top layer over the first layer, that is a polymer. A surface of the first layer may be conditioned to have a roughened or patterned topology for receipt of and adherence with the at least one top layer. The first layer may provide the coating with hardness, and the at least one top layer may provide the coating with low-friction and anti-scale properties.