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Consolidating condition of Cr-Si compacts and their microstructure

Morgiel J., Mania R., Grzonka J., Rogal Ł., Janus A. M., Zientara D.

Archives of Materials Science and Engineering

2007

Vol. 28, nr 11

673-676

Purpose: Determine the possibility of production of CrSi compacts from Cr and si elemental powders. Design/methodology/approach: The CrSi compacts containing 0.5, 1, 2, 3, at. % of Si were prepared from elemental powders (crystallites size:Cr;1-5 µm and Si;45 µm) by mixing and hot pressing at 1600*C under ∼ 25MPa. The microstructure was characterized using optical, SEM and TEM. Findings: The matrix of the compacts containing silicon show presence of dendrite like areas filled with eutectic like mixture of amorphous SiO2 and crystalline CrOx. The dendrite volume increase from 0.7% to 2% for Cr0.5Si to Cr3Si compacts respectively. Research limitations/implications: (Please leave in the title a suitable word); (Could you please put your information in this box): If research is reported in the paper this section must be completed and should include suggestions for future research and any identified limitations in the research process. Practical implications: The described experiments advice on preparation of dense CrSi compacts from elemental powders. It may be used as technology of producing magnetron targets for deposition of hard coatings like CrN/Si3N4. Originality/value: The paper is answering the problem, i.e. describes the optimum parameters, of obtaining of the multi-elemental coating in single target magnetron systems.