Silicon Contamination During Alloy Oxidation in Water Vapour at 650 °C
نویسندگان
چکیده
Abstract A model Si-free alloy, Fe-30Cr (wt.%), was exposed to Ar-10H 2 O mixture (in vol.%) at 650 °C, forming a protective Cr 3 scale, which contained silica. Liquid water used form vapour in bubbler either deionised or distilled. In both cases, low-level impurities of Si, F, Cl, S, and Ca matched those detected the scales by TEM/EDX ToF–SIMS. Consideration droplet residual solute particle sizes, together with Stokes’ Law shows that entrainment Si gas stream is likely. Calculation mass transfer rates from growing chromia scale show amount silica accounted for. Many laboratory experiments could be affected this way.
منابع مشابه
New Creep-Resistant Cast Alloys with Improved Oxidation Resistance in Water Vapor at 650–800°C
Cast stainless steel CF8C-Plus (19wt%Cr/12%Ni) has excellent creep properties, but limited oxidation resistance above 700°C in environments containing H2O. One strategy to improve the alloy oxidation performance is to increase the Cr and Ni concentration. Two new alloys, with, respectively, 21wt%Cr–15wt%Ni and 22wt%Cr–17.5wt%Ni were therefore developed and their long-term oxidation behaviors in...
متن کاملTi3sic2formation during Ti–c–si Multilayer Deposition by Magnetron Sputtering at 650 °c Original Citation
The University Repository is a digital collection of the research output of the University, available on Open Access. Copyright and Moral Rights for the items on this site are retained by the individual author and/or other copyright owners. Users may access full items free of charge; copies of full text items generally can be reproduced, displayed or performed and given to third parties in any ...
متن کاملInfluence of water vapour and carbon dioxide on free lime during storage at 80 °C, studied by Raman spectroscopy.
Micro-Raman spectroscopy has been used to follow the reaction of free lime (CaO) exposed for 24h to moist air at 80 °C under conditions of different relative humidities (10-80% RH). X-ray diffraction and SEM imaging were applied as complementary techniques. The conversion of lime to calcium hydroxide and its subsequent carbonation to various calcium carbonate polymorphs was found to strongly de...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Oxidation of Metals
سال: 2022
ISSN: ['0030-770X', '1573-4889']
DOI: https://doi.org/10.1007/s11085-022-10108-4