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Coating of protection of a metallic piece made of titanium alloy and method of depot.

机译:钛合金制成的金属件的保护涂层和堆焊方法。

摘要

Protective coating for an article made of titanium alloy, characterised in that it consists of a metal matrix made of titanium alloy comprising, on the one hand, particles of titanium carbide with a particle size smaller than 50 microns and preferably between 10 and 30 microns and in a concentration of between 10 and 80 % by weight and, on the other hand, a very fine secondary system of titanium carbide precipitates. Process for depositing a coating (4) on the surface of an article (2) made of titanium alloy, characterised in that a mixture of powders consisting, on the one hand, of titanium alloy which has a particle size between 30 and 150 microns and, on the other hand, of titanium carbide of particle size smaller than 50 microns and preferably between 10 and 30 microns, and in a concentration of between 10 and 70 % by weight, is deposited on the surface, while the surface and the mixture of powders are heated by employing a source of heat with a high density of energy, such as a laser beam, and then cooled to form a metal matrix coating the article (1). The coating (4) obtained exhibits a good level of resistance to damage (wear, fretting, erosion) while having good ductility, tenacity and corrosion-resistance properties. IMAGE
机译:用于由钛合金制成的制品的保护涂层,其特征在于,它由由钛合金制成的金属基体组成,该金属基体一方面包含粒径小于50微米,优选在10至30微米之间的碳化钛颗粒。另一方面,其浓度为10-80重量%,并且非常细的碳化钛二次体系沉淀。在由钛合金制成的制品(2)的表面上沉积涂层(4)的方法,其特征在于,一方面由钛合金组成的粉末混合物,其粒径在30至150微米之间,并且另一方面,粒度小于50微米,优选为10至30微米,浓度为10至70%(重量)的碳化钛沉积在表面上,而表面和通过采用诸如激光束的具有高能量密度的热源来加热粉末,然后冷却以形成覆盖制品(1)的金属基质。所获得的涂层(4)表现出良好的抗破坏性(磨损,微动,侵蚀),同时具有良好的延展性,韧性和耐腐蚀性。 <图像>

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