The objectives of this present research work are Cr-containing PM steels sintered in industrial conditions. The sintering was carried out in industrial furnace with 85%N2+15%H2 atmosphere at temperature of T=1140oC, during 40min. It is obtained information about the mechanical properties of the investigated alloys, which serve to further studies connected with the application of chemical heat treatments such as oxidation and  gas carbonitriding.

The article presents experimental results on the application of thermal oxidation or low temperature gas nitrocarburizing (LTGNC) of Ecosint powders sintered under industrial conditions. Surface hardness HRB and microhardness (HV0.1) were studied. A structural analysis was carried out and the corrosion resistance of the alloys was investigated. Conclusions were made on chemical heat treatment performed on structure and mechanical properties of the investigated alloys.

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Abstract. Recent interest in artificial neural