Surface chemistry evolution of F‐doped Ni‐base superalloy upon heat treatment
Surface chemistry evolution of F‐doped Ni‐base superalloy upon heat treatment
复制标题
Fâ掺杂镍基高温合金热处理后的表面化学演化
DOI:
10.1002/maco.201609024
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发表时间:
--
期刊:
影响因子:
--
通讯作者:
Grundmann
中科院分区:
文献类型:
--
作者:
Zschau;Schütze;Galetz;Gleeson;Lorenz;Grundmann
Ni‐based superalloys with Al‐contents between 3 and 5 wt% exhibit insufficient oxidation resistance at temperatures above 900 °C. A change of the oxidation mechanism has been achieved after doping surface‐near regions with fluorine by ion implantation and subsequent heat treatment. With that, the formation of a protective alumina scale was observed. This study is dedicated to the nature of the kinetic bias for the alumina scale formation. The samples of alloy IN738 (3.5 wt% Al) were implanted with F‐ions (1017F/cm2at 38 keV). The depth profiles of O, Ni, Cr, Co, Ti, and Al were determined using secondary neutrals mass spectrometry (SNMS), whereas the F‐depth profiles were measured by non‐destructive proton‐induced gamma‐ray emission (PIGE). Directly after F‐implantation no Al‐enrichment near the surface was observed. After heating up to temperatures between 400 and 800 °C, no distinct alumina scale formation was observed. At 1000 and 1050 °C, a distinct Al‐rich region has formed. Extending the oxidation time up to 12 h leads to a pronounced Al‐profile, suggesting the growth of a pure alumina scale near the surface.
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影响因子:
2.2
作者:
J. Litz;A. Rahmel;M. Schorr;J. Weiss
通讯作者:
J. Weiss
影响因子:
4.4
作者:
G. Schumacher;F. Dettenwanger;M. Schütze;U. Hornauer;E. Richter;E. Wieser;W. Möller
通讯作者:
G. Schumacher;F. Dettenwanger;M. Schütze;U. Hornauer;E. Richter;E. Wieser;W. Möller
DOI:
10.1016/j.nimb.2007.01.068
发表时间:
2007
影响因子:
1.3
作者:
H. Zschau;M. Schütze;H. Baumann;K. Bethge
通讯作者:
K. Bethge
DOI:
10.4028/www.scientific.net/msf.369-372.165
发表时间:
2001
期刊:
Materials Science Forum
影响因子:
--
作者:
R. Muñoz;D. Clemens;F. Tietz;R. Anton;J. Quadakkers;L. Singheiser
通讯作者:
L. Singheiser
影响因子:
1.3
作者:
S. Samal
通讯作者:
S. Samal