MoSi2 laser cladding—elaboration, characterisation and addition of non-stabilized ZrO2 powder particles

The cladding process using laser beam radiation comprises different operational regimes, depending on the involved lasers (usually CO2 or Nd:YAG) and materials. A series of experiments has been carried out to investigate Nd:YAG laser cladding using MoSi2 powder. Procedures and operating parameters f...

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Veröffentlicht in:Intermetallics 2003-09, Vol.11 (9), p.931-938
Hauptverfasser: Ignat, Sorin, Sallamand, Pierre, Nichici, Alexandru, Vannes, Bernard, Grevey, Dominique, Cicalã, Eugen
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Sprache:eng
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Zusammenfassung:The cladding process using laser beam radiation comprises different operational regimes, depending on the involved lasers (usually CO2 or Nd:YAG) and materials. A series of experiments has been carried out to investigate Nd:YAG laser cladding using MoSi2 powder. Procedures and operating parameters for producing clad layers has been developed and their properties evaluated. The feasibility of the laser cladding technique, using a high power Nd:YAG laser, by projecting MoSi2 powder on steel substrate was demonstrated. The results indicate a low density of cracks, elevated powder catchment efficiency (between 65 and 90%) and hardness values around 1200-1300 HV. Our goal consists in crack reduction (ideally elimination) and to reach that we have considered the addition of components that can create opposing stresses during solidification, like non-stabilized Zirconia powder particles. The results of these experiments are also widely presented in the paper. [Substrate: XC38.]
ISSN:0966-9795
DOI:10.1016/S0966-9795(03)00105-5