Optimizing of LVOF Spray Parameters to Coat Ceramics by Studying Particles In-Flight Characteristics

A new variant of LVOF system was developed to deposit ceramics. For this study Cr₂O₃ powder was used. To save on time and reduce mathematical iterations optimizing of parameters was carried out by using an online particle diagnosing system. The spray parameters were varied to study their influence on the particle in-flight characteristics. The parameters which gave best particle temperature and velocity was used for coating. The resulted coating was dense and hard.