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The mechanical properties,such as hardness and modulus of elasticity of coatings and the part of thin walls of Ni-based and Co-based alloy prepared by LENS were measured by nanoindentation testing,scanning electron microscopy and energy dispersive spectroscopy were used to analyze their microstructure,the affect of parameters on structure and mechanical properties were studied.The results showed that the mechanical properties were basically identical with the whole coating;the hardness and modulus of elasticity of nanoindentation were evenly distributed in the defect field.The average hardness and modulus of elasticity of coating of Ni-based alloy are 8.29GPa and 235GPa.The average hardness and modulus of elasticity of coating of Co-based alloy are 7.08GPa and 243GPa.The modulus of elasticity of part of thin walls has relationship with the grain orientation.
The mechanical properties, such as hardness and modulus of elasticity of coatings and the part of thin walls of Ni-based and Co-based alloys prepared by LENS were measured by nanoindentation testing, scanning electron microscopy and energy dispersive spectroscopy were used to analyze their microstructure , the affect of parameters on structure and mechanical properties were studied.The results showed that the mechanical properties were basically identical with the whole coating; the hardness and modulus of elasticity of nanoindentation were evenly distributed in the defect field. the average hardness and modulus of elasticity of coating of Ni-based alloy are 8.29GPa and 235GPa.The average hardness and modulus of elasticity of coating of Co-based alloy are 7.08GPa and 243GPa.The modulus of elasticity of part of thin walls has relationship with the grain orientation.