Fluidized chemical vapor deposition (FCVD) technology was developed for coating SnO 2 thin film on ultrafine Al 2O 3 particles.Transmission electron microscopy (TEM) and high resolution electron microscopy (HREM) ...Fluidized chemical vapor deposition (FCVD) technology was developed for coating SnO 2 thin film on ultrafine Al 2O 3 particles.Transmission electron microscopy (TEM) and high resolution electron microscopy (HREM) analyses demonstrated that SnO 2 films with different structures were deposited through controlling the coating temperature, reactant concentration, etc .. Nanocrystalline SnO 2 film was formed at 572.15K by gas phase reaction of SnCl 4 and H 2O.Electron probe microanalyser (EPMA) and energy dispersive spectrometer (EDS) analyses indicated that the distribution of nanocrystalline SnO 2 over inner and outer part of the Al 2O 3 agglomerates was homogeneous.展开更多
The concept of the flowing film jigging was first applied to the flowing film concentration area.The flowingfilm jigging function is an important element of the new process,in jection-flowing film centrifugation(IFFC)...The concept of the flowing film jigging was first applied to the flowing film concentration area.The flowingfilm jigging function is an important element of the new process,in jection-flowing film centrifugation(IFFC),for separating and recovering minerals of ultrafine sizes.展开更多
There are two basic kinds of photoemissive materials for the laser pulse detection.One is the photoemissive thin films containing alkali elements,such as Ag-O-Cs,Cs<sub>3</sub>Sb,[Cs]Na<sub>2</sub...There are two basic kinds of photoemissive materials for the laser pulse detection.One is the photoemissive thin films containing alkali elements,such as Ag-O-Cs,Cs<sub>3</sub>Sb,[Cs]Na<sub>2</sub>KSb.F.Gex et al.proposed that the Ag-O-Cs photocathode was the onlyphotoemissive material for detecting laser pulse with the duration≤10 ps and wavelength1.06μm.Another is pure metallic thin films,such as Au,Ag and Cu.The sensitivity ofphotocathodes containing alkali elements is higher than that of others,but this kind ofthin film cannot work at temperature higher than 150℃,nor can it be exposed to theatmosphere for the exposure will make it worthless.This causes the trouble for use。展开更多
文摘Fluidized chemical vapor deposition (FCVD) technology was developed for coating SnO 2 thin film on ultrafine Al 2O 3 particles.Transmission electron microscopy (TEM) and high resolution electron microscopy (HREM) analyses demonstrated that SnO 2 films with different structures were deposited through controlling the coating temperature, reactant concentration, etc .. Nanocrystalline SnO 2 film was formed at 572.15K by gas phase reaction of SnCl 4 and H 2O.Electron probe microanalyser (EPMA) and energy dispersive spectrometer (EDS) analyses indicated that the distribution of nanocrystalline SnO 2 over inner and outer part of the Al 2O 3 agglomerates was homogeneous.
文摘The concept of the flowing film jigging was first applied to the flowing film concentration area.The flowingfilm jigging function is an important element of the new process,in jection-flowing film centrifugation(IFFC),for separating and recovering minerals of ultrafine sizes.
文摘There are two basic kinds of photoemissive materials for the laser pulse detection.One is the photoemissive thin films containing alkali elements,such as Ag-O-Cs,Cs<sub>3</sub>Sb,[Cs]Na<sub>2</sub>KSb.F.Gex et al.proposed that the Ag-O-Cs photocathode was the onlyphotoemissive material for detecting laser pulse with the duration≤10 ps and wavelength1.06μm.Another is pure metallic thin films,such as Au,Ag and Cu.The sensitivity ofphotocathodes containing alkali elements is higher than that of others,but this kind ofthin film cannot work at temperature higher than 150℃,nor can it be exposed to theatmosphere for the exposure will make it worthless.This causes the trouble for use。
