摘要
In spite of the considerable progress made in the domain of the sciences of materials, cutting tools subjected to an intense abrasive wear and a very high temperature of edge. They record during their use an reduced working life. The operations of machining on lathe are regularly stopped for replacing these tools, which influences enormously the production process. Indeed, the search the new materials of substitution, remain a domain very coveted, owing to the fact, it belongs to one stake very significant industrial, in particular, in the mechanical domain and its varied sectors. The recourse to the thermal treatments traditional, limiting in an interval, reduces the wear and the excessive consumption of these cutting tools, but the principal concern of the experts and researchers, in the domain of the mechanical engineering, remain posed. The goal of this study is the introduction of the technique of plasmas, as physical phenomenon, for making material of coating at base of titanium nitrides doped at iron, at the different concentrations. To this objective, one magnetron sputtering with plasma was used for the realization of the coatings deposed on the active parts of the cutting tools. During the experimentation, it was noted that the cutting tools which are treated by plasma, subjected to the machining operations on lathe and the hardness tests, presents one improvement of their hardness and a remarkable increase in their lifespan.
In spite of the considerable progress made in the domain of the sciences of materials, cutting tools subjected to an intense abrasive wear and a very high temperature of edge. They record during their use an reduced working life. The operations of machining on lathe are regularly stopped for replacing these tools, which influences enormously the production process. Indeed, the search the new materials of substitution, remain a domain very coveted, owing to the fact, it belongs to one stake very significant industrial, in particular, in the mechanical domain and its varied sectors. The recourse to the thermal treatments traditional, limiting in an interval, reduces the wear and the excessive consumption of these cutting tools, but the principal concern of the experts and researchers, in the domain of the mechanical engineering, remain posed. The goal of this study is the introduction of the technique of plasmas, as physical phenomenon, for making material of coating at base of titanium nitrides doped at iron, at the different concentrations. To this objective, one magnetron sputtering with plasma was used for the realization of the coatings deposed on the active parts of the cutting tools. During the experimentation, it was noted that the cutting tools which are treated by plasma, subjected to the machining operations on lathe and the hardness tests, presents one improvement of their hardness and a remarkable increase in their lifespan.
