Ultrasound used to produce titanium
Engineers at General Motors Research and Development Center in Sterling Heights, Michigan, have developed a “sonochemical” method for producing titanium powder.
To produce the powder, ultrasound waves are directed through a hydrocarbon solvent at near-ambient temperatures to create a colloidal suspension of alkali metals. The finely dispersed metals reduce titanium tetrachloride to titanium metal under cavitation conditions and at near-ambient temperatures. The resulting submicron size particles may facilitate compaction and sintering of the powder, as well as alloying through shortened diffusion distances. The process may require only five steps, compared to the ten steps needed for the Armstrong process.



Mineral markets' boom and bust over says report...


