Author/Authors :
Chen، نويسنده , , Q.Y. and Meng، نويسنده , , C.M. and Lu، نويسنده , , T.C. and Chang، نويسنده , , X.H. and Ji، نويسنده , , G.F. and Zhang، نويسنده , , L. and Zhao، نويسنده , , F.، نويسنده ,
Abstract :
The properties of MgAl2O4 nanopowders under shock pressure up to 5.3 GPa were investigated. It was found that the lattice constants and residual stresses of shock treated MgAl2O4 nanopowders increase non-linearly with shock velocity. According to the transmission electron microscope (TEM) images, the grain size of nanopowder was found decreased significantly after shock compression. The smaller grain size and high residual stress could lead to high sintering activity, which could be extraordinarily useful to enhance the density of ceramic and make highly transparent ceramic.
Keywords :
Shock compression , MgAl2O4 , Ceramic nanopowder , Residual stresses , X-Ray Diffraction (XRD)
