Transmission electron microscopy study of Ar-filled bubbles in steel.
Ar-filled bubbles in an oxide-dispersion-strengthened (ODS) alloy were characterized by analytical transmission electron microscopy. Energy dispersive X-ray analysis combined with nanoscale imaging was employed for quantitative analysis of Ar gas locked in a bubble 6 nm in size. As the Ar bubbles are formed at the ODS particles - matrix interface, the known Ti(2)Y(2)O(7) composition and size of ODS particles served as a reference in quantification of the Ar signal and for the calculation of the bubble size and the Ar density inside. The Ar pressure was also calculated by modified Van der Waals equation.
Klimenkov
M
M
Forschungszentrum Karlsruhe GmbH, Institute for Materials Research I, Eggenstein-Leopoldshafen, Germany. michael.klimenkov@imf.fzk.de
Lindau
R
R
Möslang
A
A