METHOD FOR IN-VACUUM MAKING MULTIPLE TRIBOLOGICAL THIN LAYERS, WITH COMPLEMENTARY CUMULATIVE PROPERTIES, BY 'PHYSICAL VAPOR DEPOSITION' () OR 'IONIZED PHYSICAL VAPOR DEPOSITION' () TYPE METHOD

摘要

The invention relates to a material with multiple coating layers and to a process for in-vacuum obtaining the same, used for making the vacuum depositions of the multiple thin layers, for improving the tribological properties of the metal parts subjected to friction which causes by wear, noises and exaggerated heating, which leads to their premature damaging. According to the invention, the material comprises 4 layers with individual thicknesses of 100 nmh125 nm and total thickness of 0.6 μ m H5 μ m, obtained by magnetron-type deposition in a single technological working cycle, each layer consisting of: hard materials, which are incompressible and have Vickers micro-hardness higher than 10 GPa or super-hard which are super-incompressible and have Vickers micro-hardness higher than 40 GPa and which show covalent chemical bond, for an initial layer (1); materials with high compressibility and tenacity, properties which provide the storage of the energy to which the tribological thin layers are subjected, for another layer (2); materials with ionic bond with properties of high thermal and chemical stability, for an intermediary layer (3); or materials with an as low as possible friction coefficient, especially dry lubricant materials, with very low friction coefficient, for a final layer (4).