RESEARCHES ON THE POSSIBILITY TO INCREASE THE WEARING RESISTANCE OF RAPID STEELS BY TiN PLASMA DEPOSITION

摘要

The researches carried out demonstrate that by ionic deposition from plasma, with titanium nitride in the equipment with electron gun, can be obtained thin layers of TiN, with an increased hardness compared with support material hardness.Deposit layers hardness depended on the deposition conditions, i.e. the nitrogen flow rate.Hardness highest values were obtained in the case of nitrogen flow rate of about 16 l/h. In these conditions, the deposit layer presented a compact layer aspect, almost uniform and with good adherence.Deposit layer thickness depends on the deposition conditions, i.e. the nitrogen flow rate; the biggest thickness of the layer was obtained also in the conditions of a nitrogen flow rate of about 16l/h.Also, it was observed that the increase of wearing resistance was bigger with the increase of the deposit layer hardness.