TY - JOUR
T1 - A contribution to the characterization of the silicate-water interface – Part II
T2 - Atom Probe Tomography of tricalcium silicate
AU - Naber, C.
AU - Sowoidnich, T.
AU - Bellmann, F.
AU - Neubauer, J.
AU - DeRocher, K. A.
AU - Joester, Derk
PY - 2018/11/1
Y1 - 2018/11/1
N2 - This work explores the possibility to investigate the nanoscale cement-water interface by means of atom-probe tomography (APT). For this purpose, the main compound of Ordinary Portland Cement, tricalcium silicate, and its hydration product calcium-silicate-hydrate have been analyzed by APT. Of special interest was the surface of anhydrous and hydrated tricalcium silicate. The results show, that a nanoscale characterization of tricalcium silicate with APT is possible by carefully controlling the various measurement parameters. Furthermore, our results indicate, that the conditions during focused ion beam sample preparation, especially the high vacuum and energy input, are potentially harmful to calcium-silicate-hydrate. Future developments in cryo sample preparation will greatly enhance the applicability of APT on cement and its hydration products.
AB - This work explores the possibility to investigate the nanoscale cement-water interface by means of atom-probe tomography (APT). For this purpose, the main compound of Ordinary Portland Cement, tricalcium silicate, and its hydration product calcium-silicate-hydrate have been analyzed by APT. Of special interest was the surface of anhydrous and hydrated tricalcium silicate. The results show, that a nanoscale characterization of tricalcium silicate with APT is possible by carefully controlling the various measurement parameters. Furthermore, our results indicate, that the conditions during focused ion beam sample preparation, especially the high vacuum and energy input, are potentially harmful to calcium-silicate-hydrate. Future developments in cryo sample preparation will greatly enhance the applicability of APT on cement and its hydration products.
KW - Atom probe tomography
KW - CaSiO
KW - Calcium-Silicate-Hydrate (C-S-H)
KW - Focused ion beam
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U2 - 10.1016/j.micron.2018.06.001
DO - 10.1016/j.micron.2018.06.001
M3 - Article
C2 - 29885818
AN - SCOPUS:85047971622
VL - 114
SP - 72
EP - 77
JO - Micron
JF - Micron
SN - 0968-4328
ER -