Three possible structures of the favorable growth unit Al6 (OH)18 (H2O)6 of gibbsite are calculated by abinitio at STO-3G, STO-3G* , STO-6G, STO-6G* , 3-21G, 6-
The deformation behavior of AZ31B magnesium alloy as extruded under hot compression conditions was characterized in the temperature range of 200 - 400 ℃ and st
The gas atomization is the process that a liquid mass is disintegrated into a collection of liquid melt droplets by the impact of high velocity gas stream and s
Ti-600 is one of the high performance titanium alloys used at 600 ℃,which was developed in Northwest Institute for Nonferrous Metal Research(NIN) in China. The
Among the noises of the punch press, blanking noise and engaging noise of the clutch should be paid most attention to. The latter is generated by the engagement
In order to study high-frequency soft magnetic properties of Finemet amorphous alloy,the microstructural change and nanocrystallization under different heat tre