The quality evaluation of alloy powders includes multiple indicators: chemical composition, particle size distribution, particle morphology, flowability, and bulk density. These indicators directly affect subsequent processing and the performance of the final product.
Chemical composition analysis typically employs spectroscopic methods to ensure elemental content meets requirements. Particle size distribution is determined using laser diffraction or sieving. Particle morphology is observed using an electron microscope. Flowability and bulk density are measured using specialized instruments.
During production, strict control of process parameters is necessary, such as melting temperature, atomization pressure, and cooling rate. These parameters affect the microstructure and performance stability of the powder. Packaging and storage conditions are also crucial to prevent powder oxidation or moisture absorption.
