YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>-Ag<sub>x</sub> composite superconductorswere prepared by hybrid sintering process using YBa<sub>2</sub>Cu<sub>3</s
(Ti,Nb)C Ni composite is prepared.Theanalyses of SEM,EPMA and TEM/EDAX show that (Ti,Nb)C-Ni consists of three phases,which are called interior,transitional and
With the assistance of griding dynam-ic model,this paper studied the dynamic parameters of siglesize ball grinding of single grade size material and mixedmatria
A systematic analysis has been carried out to investigate the fields of application and interaction mechanism of polymeric carbohydrate,i. e. polysaccharides(in