Oxidation of AlMg in Dry and Humid Atmospheres
Oxidation of AlMg in Dry and Humid Atmospheres
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AlMg 在干燥和潮湿气氛中的氧化
DOI：
10.1007/978-3-319-48160-9_125
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Shawn C. Wilson
中科院分区：
文献类型：
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作者：
D. Stevens;A. Kvithyld;T. Engh;Shawn C. Wilson
采用热重分析仪（TGA）研究了Al 5%Mg在干燥和潮湿气氛下的热氧化过程，并采用质谱仪测定了氧化后的尾气成分。发现当水蒸气参与氧化时，产生氢气。潮湿的气氛（7摩尔% H2O）不影响总氧化质量，但似乎在空气和含有5摩尔% CO2的空气中催化氧化。在含有5mol%CO2的空气气氛中，总氧化比仅在空气中少约50 - 75%。一些样品在含有5%CO2的潮湿空气（7mol%H2O）中没有显著氧化，这可能是由于在液态铝样品周围形成的强氧化物层。与未受保护的样品相比，碳粉涂层显示出保护铝免受氧化持续延长的时间段，并且湿度延长了这种保护。该工作在工业热退膜装置中具有潜在的应用价值。
Thermal oxidation of Al5%Mg was carried out in dry and humid atmospheres with a thermogravimetric anlyzer (TGA), and the composition of off-gases was measured with a mass spectrometer. It was found that when water vapor participates in oxidation, hydrogen gas is produced. A humid atmosphere (7 mol% H2O) does not affect total oxidation mass, but seems to catalyze oxidation in both air and air containing 5 mol% CO2. In an air atmosphere containing 5 mol% CO2, total oxidation is approximately 50–75 % less than in air alone. Some samples in humid air (7 mol% H2O) containing 5 % CO2did not oxidize significantly, which may be due to a strong oxide layer which forms around the liquid aluminum sample. A carbon powder coating was shown to protect the aluminum from oxidation for an extended period of time compared to an unprotected sample and humidity extended this protection. This work has potential applications in industrial thermal decoating units.