Investigation of the Particle Velocity of the Amorphous Powder

The kinetic energy of the particles in the thermal spraying plays an important role in establishing a strong adhesion bond in the collision process with the substrate. Many characteristics of the coatings depend on the particle velocity. The purpose of this research is to look into the effect of some parameters in plasma spraying using ordinary air as the plasma generation gas on velocity behavior. The feedstock material is a Fe-based amorphous alloy, a new competitive group of materials. A brief analysis of the publications on particle velocity in thermal spraying is presented in the introduction paragraph. The methodology paragraph consists of a description of the plasma spray system, the high-speed camera for measurement of the particle velocity, and the data processing for deviation from the regression equation. The series of plasma spraying occurs in the experiment paragraph when all of the main parameters, such as the current, the potential of plasma power, and the flow rate of the air, are changing to investigate the behavior of the particle of powder X-5. The analysis of the variation of parameters helps to evaluate their weight. The findings and discussions in the following paragraph explain the relationships between the process's main parameters. In conclusion, some recommendations for the design of the plasma torch are mentioned, and future solutions to increase particle velocity are proposed.