Particle In-Flight and Coating Properties of Fe-Based Feedstock Materials Sprayed with Modern Thermal Spray Systems

作者：Bobzin Kirsten; Kopp Nils; Warda Thomas^*; Petkovic Ivica; Schaefer Marcel; Landes Klaus Dieter; Forster Guenter; Zimmermann Stephan; Marques Jose Luis; Kirner Stefan; Kauffeldt Marina; Schein Jochen

来源：Journal of Thermal Spray Technology, 2013, 22(2-3): 363-370.

DOI：10.1007/s11666-012-9853-z

• atmospheric plasma spray (APS)
• Fe-Cr-Ni
• fluid dynamics
• HVOF
• particle velocity

New developments in the field of thermal spraying systems (increased particle velocities, enhanced process stability) are leading to improved coatings. Innovations in the field of feedstock materials are supporting this trend. The combination of both has led to a renaissance of Fe-based feedstocks. Using modern APS or HVOF systems, it is now possible to compete with classical materials for wear and corrosion applications like Ni-basis or metal-matrix composites. This study intends to give an analysis of the in-flight particle and spray jet properties achievable with two different modern thermal spraying systems using Fe-based powders. The velocity fields are measured with the Laser Doppler Anemometry. Resulting coatings are analyzed and a correlation with the particle in-flight properties is given. The experiments are accompanied by computational fluid dynamics simulations of spray jet and particle velocities, leading to a comprehensive analysis of the achievable particle properties with state-of-the-art HVOF and APS systems.

• 出版日期2013-3