Coating Powder and Method for Its Production

Mécanique & Industries, 2002

Applications de revêtements durs (Cr x N y ) obtenus par méthodes P.V.D. à l'usinage du bois Applications of hard coatings (Cr x N y ) obtained by P.V.D. methods in wood machining Reçu le 10 janvier 2002; accepté le 15 mars 2002

Surface and Coatings Technology, 2008

2010

The invention relates to a protection method of a metal substrate, particularly aluminum alloy, against corrosion and abrasion, characterized in that it comprises forming on said alloy coating substrate zinc and nickel, and then polishing the coating thus formed. This method may further comprise applying to the polished coating alloy of zinc and nickel, with a transparent surface coating and airtight.

Journal de Physique III, 1996

International Journal of Pharmaceutics, 2002

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Ce papier a pour objectif de présenter les premiers essais de modélisation du procédé de trempage d'un moule cylindrique dans un bain de polymère. L'objectif est de pouvoir prédire numériquement l'épaisseur de couche liquide extraite autour du moule après sa sortie du bain. Une rhéologie anisotherme newtonienne a été utilisée dans un premier temps. Les premiers résultats obtenus ont montré que l'épaisseur extraite n'était pas constante le long du moule ; elle est maximale à l'extrémité inférieure et minimale à l'extrémité supérieure. Des problèmes d'instabilités à l'interface matière/air et de pertes de matière apparaissent, une approche d'introduction de la tension de surface sera présentée.

2010

The automotive sector applies constant pressure on the PM industry to produce components with superior mechanical properties at minimum cost. In this regard, sinter-hardenable powders are particularly well suited since they allow direct quenching of components at the end of the sintering cycle, thus eliminating the extra steps normally required for heat treating. This thesis presents the results of the modelization of the influence of admixing and/or prealloying on the optimization of compressibility and hardenability of sinterhardenable steel powders. Small powder batches were produced using a water atomizer at Laval University powder metallurgy laboratory. A first design of experiments (DOE) was used to optimize the chemical composition and to study the interactions between prealloyed elements (Nickel, Chromium, Molybdenum and Manganese) and admixed elements (Nickel, Chromium, Manganese and Copper) on hardenability and compressibility. Mechanical properties were also characterized...

2021

It should be remembered that in the Congo Basin, investments in new wood processing plants or in the extension of existing ones are still very limited. In addition, the 3 wood products exported from this region are mainly sawn timber, veneers, and plywood. It should be noted that despite some timid existing opportunities, some companies operating in the Congo Basin are struggling to invest in wood processing and therefore do not effectively contribute to the development of national and sub-regional economies. To better capitalize on these opportunities, it is important to create a business environment conducive to new investments in advanced wood processing. Ultimately, this study made it possible to assimilate the techniques and processes of obtaining veneers and plywood successfully through the technology of the machines developed, with the application of our theoretical knowledge in order to gain experience of professionally enhanced intellectual capacities. The plywood productio...