ANALYSIS OF ENERGY CONDITIONS FOR LASER CLADDING CERAMIC-METAL COMPOSITE COATINGS

The technique of laser cladding ceramic-metal composite coatings has s hown high promise in industrial applications in recent years. Whenever a laser-cladded ceramic-metal composite coating (LCCC) with a new com position is to be developed, the first problem is how to evaluate the possible combinations of ceramic particles and matrix alloy. In this p aper it is demonstrated that the minimum specific energy (MSE) needed to obtain LCCCs can be used as one standard to choose the combination of ceramic phase particles and matrix alloy correctly and rapidly. Mea nwhile, experimental results show that the MSE of LCCCs is strongly de pendent on the type, shape, size and weight percentage of ceramic part icles as well as on the composition of the matrix alloy. This finding is in good agreement with the theoretical analysis.