Aztec eds system

Structures of the set cement materials and surface deposits formed in the SBF assays were examined by X-ray diffraction analysis (XRD) on a D 5000 X-Ray Diffractometer (Siemens, Karlsruhe, Germany), using CuKα radiation within a 2θ range of 5 – 40° at a scanning speed of 1.2° min^-1. In addition, attenuated total reflectance with Fourier transform infrared spectroscopy (ATR-FTIR) analysis was performed using a Cary 630 Agilent Technologies FTIR-ATR (Agilent Technologies Inc., Santa Clara, CA, USA) spectrometer in the 400-4000 cm^-1 wavenumber range.
Discs, before and after seven days of SBF immersion, were dehydrated, mounted on aluminium stubs, and coated with gold. Specimens were examined using a scanning electron microscope (Jeol JSM-IT300LV, JEOL USA Inc., USA) connected to an energy dispersive x-ray detector for elemental analysis with computer-controlled software, the Aztec EDS system (Oxford Instruments, Abingdon, UK). Micrographs of the material surface at 500x and 2000x magnifications were captured, and EDX quantitative chemical analyses were performed of BD, 1%nBG/BD, and 2%nBG/BD samples after seven days of SBF immersion at 2000x augmentation, representative areas for each material were analysed, and Ca/P ratio was calculated.

Transmission Kikuchi Analysis (TKD) analysis was performed using a Zeiss Ultra Plus FEG SEM, equipped with an Oxford Instruments Channel 5 EBSD system and a Nordlys-S EBSD detector at the Australian Centre for Microscopy and Microanalysis, The University of Sydney, operated at 1–10 nA and 30 kV at high vacuum. Phase composition was determined using an Oxford Instruments AZtec EDS system with an X-Max 20 mm² silicon drift detector. The TEM foil was mounted using custom-made clamps attached to a standard 70° tilted EBSD sample holder. The SEM stage was tilted toward the EBSD detector by 20° at a working distance of typically 5 mm from the pole piece13 (link). After positioning of the SEM stage the EBSD detector including phosphorous screen and forescatter detectors was fully inserted.