Effect of Rare Earth La on High Temperature Oxidation of High Carbon Alloy Tool Steel AITranslate
Abstract AITranslate
The effect of La addition on high temperature oxidation of high carbon alloy tool steel was stud- ied. The high-temperature oxidation behavior of high carbon alloy tool steel without and with rare earth La was analyzed with thermal analyzer and weight gain method. The morphology of oxide film was observed by scanning electron microscopy. The structure of the oxide layer and its layering were analyzed by observing the cross-sectional morphology of the oxide layer. The results show that all the kinetic curves of iso- thermal oxidation at 900 ℃, 1 000 ℃, 1 100 ℃ and 1 200 ℃ of high carbon alloy tool steels with and without La are in accordance with the parabolic law,and the oxide films of the two alloy tool steels are protective. The oxidation reaction activation energy of high carbon alloy tool steel with rare earth La is 23% higher than that without La addition, and its oxidation rate constant is also lower. The adhesion of the oxide film on the high carbon alloy tool steel with rare earth La is stronger,and its oxide layer is more solid. The addition of rare earth La refines oxide film grains on high carbon alloy tool steel surface, and reduces the interspace among oxide film grains, resulting in the oxide films not easy to peel off.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.454[金属学及工艺—金属材料]
Citation Information:
The effect of La addition on high temperature oxidation of high carbon alloy tool steel was stud- ied. The high-temperature oxidation behavior of high carbon alloy tool steel without and with rare earth La was analyzed with thermal analyzer and weight gain method. The morphology of oxide film was observed by scanning electron microscopy. The structure of the oxide layer and its layering were analyzed by observing the cross-sectional morphology of the oxide layer. The results show that all the kinetic curves of iso- thermal oxidation at 900 ℃, 1 000 ℃, 1 100 ℃ and 1 200 ℃ of high carbon alloy tool steels with and without La are in accordance with the parabolic law,and the oxide films of the two alloy tool steels are protective. The oxidation reaction activation energy of high carbon alloy tool steel with rare earth La is 23% higher than that without La addition, and its oxidation rate constant is also lower. The adhesion of the oxide film on the high carbon alloy tool steel with rare earth La is stronger,and its oxide layer is more solid. The addition of rare earth La refines oxide film grains on high carbon alloy tool steel surface, and reduces the interspace among oxide film grains, resulting in the oxide films not easy to peel off.
quote
| GB/T 7714-2015 | [1] CHEN Wei-peng, WANG qiang, JIANG Meng-qing, et al. Effect of Rare Earth La on High Temperature Oxidation of High Carbon Alloy Tool Steel[J]. Rare Metals and Cemented Carbides, 2018(2): 21-26. |
| MLA | [1] CHEN Wei-peng, et al., "Effect of Rare Earth La on High Temperature Oxidation of High Carbon Alloy Tool Steel." Rare Metals and Cemented Carbides, no. 2, 2018, pp. 21-26. |
| APA | [1] CHEN Wei-peng, WANG qiang, JIANG Meng-qing, TANG Wei-dong, & LI Bao-wei. (2018). Effect of Rare Earth La on High Temperature Oxidation of High Carbon Alloy Tool Steel. Rare Metals and Cemented Carbides(2), 21-26. |
| IEEE | [1] CHEN Wei-peng, WANG qiang, JIANG Meng-qing, TANG Wei-dong, and LI Bao-wei, "Effect of Rare Earth La on High Temperature Oxidation of High Carbon Alloy Tool Steel," Rare Metals and Cemented Carbides, no. 2, pp. 21-26, 2018. keywords: {rare earth La;high carbon alloy tool steel;high temperature oxidation;oxide film;kinetics} |