@inproceedings{3048931, title = "Studies of the precipitation process by small angle neutron scattering.", author = "Mergia, K and Messoloras, S", year = "1997", pages = "152-155", publisher = "SPIE - INT SOC OPTICAL ENGINEERING", booktitle = "NEUTRONS IN RESEARCH AND INDUSTRY, INTERNATIONAL CONFERENCE", doi = "10.1117/12.267888", abstract = "Small Angle Neutron Scattering (SANS) is a unique tool in the study of the precipitation phenomena. The size, shape, number density, volume fraction and chemical composition of the precipitates can be unambiguously determined and the kinetic process can be investigated by using samples that have undergone different heat treatments or by ‘’in situ” experiments. Systems exhibiting slow kinetics and low precipitate phase concentration (SiO2 precipitates in Si), fast kinetics for which low temperature experiments are required to ‘’freeze” the precipitate structure (Al-Zn) and ‘’in situ” experiments (Al-Li) will be discussed. The experimental results are interpreted by kinetic models which describe the precipitation process in these diverse growth conditions." }