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<p class=MsoNormal><b><span lang=ES-TRAD>Coloquio<o:p></o:p></span></b></p>
<p class=MsoNormal><span lang=ES-TRAD><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=ES>INFIP</span></b><span lang=ES>-INSTITUTO DE
FÍSICA DEL PLASMA<o:p></o:p></span></p>
<p class=MsoNormal><span lang=ES-TRAD>CONICET - Depto. de Física, FCEN, UBA.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=ES-TRAD><o:p> </o:p></span></p>
<p class=MsoNormal><u>Título<o:p></o:p></u></p>
<p class=MsoNormal><u><o:p><span style='text-decoration:none'> </span></o:p></u></p>
<p class=MsoNormal><b><i><u><span lang=EN-GB>In situ </span></u></i></b><b><u><span
lang=EN-GB>XRD investigations during low energy ion nitriding of austenitic
stainless steel</span></u></b><b><u><span lang=EN-GB> </span></u></b><b><u><span
lang=DE><o:p></o:p></span></u></b></p>
<p class=MsoNormal><b><o:p> </o:p></b></p>
<p class=MsoNormal><u>Disertan</u><u><span lang=ES-UY>te</span></u><u><o:p></o:p></u></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b>Darina MANOVA<o:p></o:p></b></p>
<p class=MsoNormal><b><o:p> </o:p></b></p>
<p class=MsoNormal><i><span lang=DE>Leibniz-Institut für
Oberflächenmodifizierung, Leipzig, Germany.<o:p></o:p></span></i></p>
<p class=MsoNormal><span lang=DE><o:p> </o:p></span></p>
<p class=MsoNormal><u><span lang=ES>Fecha<o:p></o:p></span></u></p>
<p class=MsoNormal><span lang=ES><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=ES>Miércoles 20 de noviembre a las 11 hs.<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=ES><o:p> </o:p></span></b></p>
<p class=MsoNormal><u><span lang=ES>Lugar<o:p></o:p></span></u></p>
<p class=MsoNormal><span lang=ES><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=ES>INFIP<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=ES>Ciudad Universitaria, Pabellón I, Planta
baja. <o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=ES>Ciudad de Buenos Aires.<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=ES-TRAD>Tel. 4576-3371<o:p></o:p></span></b></p>
<p class=MsoNormal><span lang=ES-UY><o:p> </o:p></span></p>
<p class=MsoNormal><u>Resumen<o:p></o:p></u></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Energetic nitrogen insertion into
austenitic fcc phases leads to a multitude of different and interacting
processes with resulting layers often characterised by high hardness and high
wear resistance. A complex behaviour involving metastable phase formation and
decay, lattice expansion and stress depending on very specific processing
parameters including ion flux, momentum transfer, time and temperature is observed.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Ex-situ investigations, which can be very
sophisticated nowadays, lack the exact time evolution while additional
annealing processes may occur during cooling phases. In-situ experiments can
lead to a multitude of information which can be used to reassess current
models. Several examples will be given during this presentation for the
formation of expanded austenite in stainless steel and CoCr alloys.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-GB style='font-family:Wingdings'><span style='mso-list:Ignore'>Ø<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
lang=EN-GB>The information from the substrate reflexes can be used to directly
assess time dependent diffusion processes, which may depend on temperature,
voltage or current density. <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-GB style='font-family:Wingdings'><span style='mso-list:Ignore'>Ø<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
lang=EN-GB>Deviations can be rapidly identified for observing the decay into
CrN.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span
lang=EN-GB style='font-family:Wingdings'><span style='mso-list:Ignore'>Ø<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
lang=EN-GB>Deconvolution of the depth integrated information should allow
information on lattice expansion and stress development<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
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