Investigation On Ultrasonic Solid-liquid Reactive Ball-milling

Combined mechanochemistry with sonochemistry, the auther's group has developed an ultrasonic solid-liquid reactive ball milling technology, which is that metal powders are ball milled under ultrasonic processing in the distilled water solution and then nano-oxides are attained through metal powders reacting with water. The group designs an ultrasonic solid-liquid reactive ball milling equipment, and the sketch map of it is drawn in the paper. The paper simply introduces the parts of the ultrasonic solid-liquid reactive ball milling equipment, its designed motive and its wok processing. Via the ultrasonic solid-liquid reactive ball milling equipment, a lot of original powders are milled with ultrasonic waves and without ultrasonic waves in the distilled water solution. X-ray diffraction, Laser Particle Size Analyzer, SEM and TEM are employed to analyze the composition, the gain size and micro structure of the products, respectively. The rule of the gain size of ball milling products under ultrasonic processing is investigated. The further research has been done on the rules of the reactive processing and the composition of ball milling of the metal powders and water solution under ultrasonic processing. The experimental results are as follows:(1) Compared ultrasonic solid-liquid reactive ball milling a lot of original powders with solid-liquid reactive ball milling them in the distilled water solution, the ultrasonic waves can obviously minish the particle size of the products if the powders and water solution can reactive after ball milling under ultrasonic processing, but the effect on grain refinement of the ultrasonic waves may weaken if the powders and water solution can not reactive after ball milling under ultrasonic processing.(2) Compared to ball milling without ultrasonic waves in the pure distilled water solution, ultrasonic solid-liquid reactive ball milling can reduce the time to attain nano-oxides. For example, the time to attain CuO from ball milling Cu powders with ultrasonic waves in the distilled water solution is 27% of that without ultrasonic waves.(3) By the ultrasonic solid-liquid reactive ball milling, CuCO3Cu(OH)2 powders can be decomposed to CuO, while CuCO3Cu(OH)2 powders can not react via ball milling without ultrasonic waves in the distilled water solution and ball milling in the Planetary Ball Mill.(4) Compared to ball milling without ultrasonic waves in the pure distilled water solution, ultrasonic solid-liquid reactive ball milling can change the reactive pathway of ball milling. For example, the pure ZnO can be attained by ball milling Zn powders with ultrasonic waves in the distilled water solution, while only the mixture of ZnO and Zn(OH)2 can be attained by ball milling Zn powders without ultrasonic waves in the distilled water solution. The single-phase nano-oxides can be attained via ultrasonic solid-liquid reactive ball milling, providing a new preparation method in domestic and abrosd.