975 resultados para Transmission Electron Microscopy
Resumo:
This memoir recalls the instruments in the Electron Microscope Unit and the staff, students and visitors who used them. Accessory equipment is also described because much of it was innovative and built in the laboratory, also, much of the science would not have been possible without it. This publication includes 33 figures, 4 plates and 7 appendices. The appendices record that 54 MBA staff and 196 students and visitors have used the microscopes and that 413 titles have been published (to the end of 2006).
Resumo:
This paper follows previous X-ray diffraction work on crystallisation and phase transformation of electroless nickel–phosphorus deposits, concentrating on microstructural changes. Amorphous or nanocrystalline coatings, depending on their phosphorus content, were heat treated at temperatures between 100 and 500 °C for 1 h. Changes in microstructure after the heat treatment were examined using high-resolution field emission scanning electron microscope. Crystallisation and grain growth effects are observed, as well as some inherent defect structures in the coatings and their changes. These are compared with the previous X-ray diffraction work and in general, good agreement is observed. The complementary strength and weakness of the different characterisation techniques are discussed.