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Corrosion Behavior of Hot Rolled Steel Plate under Enhanced Corrosion Test for Automobile
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Wei Chen, Xiaoliang Guo, Bao Zhang, Luyang Zhang, Jinli Yang
Automobile Technology & Material | 2023, (10) : 63 - 67
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Automobile Technology & Material | 2023, (10): 63-67
Corrosion Behavior of Hot Rolled Steel Plate under Enhanced Corrosion Test for Automobile
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Wei Chen, Xiaoliang Guo, Bao Zhang, Luyang Zhang, Jinli Yang
Affiliations
  • CATARC Automotive Test Center (Hulun Buir) Co., Ltd., Hulun Buir 021000
Published: 2023-10-20 doi: 10.19710/J.cnki.1003-8817.20230023
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The corrosion behavior of hot rolled steel plate (SPHC) under enhanced corrosion test condition of automobile was studied. The morphology, composition and phase of corroded surface of SPHC steel after 7, 11 and 19 days of test were analyzed by Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometer (EDS) and X-Ray Diffractometer (XRD). The results show that the corrosion rate of SPHC presents a nonlinear change with the test time under the enhanced corrosion test condition of automobile. When the test was from 3 to 7 days, the corrosion rate increased sharply first, and Fe2O3 was formed on the surface, which accelerated the initial corrosion. When the test reached the 11th day, the corrosion rate began to drop to a low point, Fe2O3 and protective α-FeOOH were formed on the etched surface. At this time, the rust layer was relatively dense, which enhanced the corrosion resistance of SPHC. When the test reached the 14th days, the corrosion rate began to show an upward trend, the corrosion products such as Fe2O3, trace amounts of α-FeOOH and Fe3O4 were generated on the surface of SPHC. At this time, the rust layer was peeling off and the corrosion was more serious.

SPHC  /  Enhanced corrosion of automobile  /  Corrosion behavior
Wei Chen, Xiaoliang Guo, Bao Zhang, Luyang Zhang, Jinli Yang. Corrosion Behavior of Hot Rolled Steel Plate under Enhanced Corrosion Test for Automobile[J]. Automobile Technology & Material, 2023 , (10) : 63 -67 . DOI: 10.19710/J.cnki.1003-8817.20230023
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doi: 10.19710/J.cnki.1003-8817.20230023
  • Online Date：2026-01-12
  • Published：2023-10-20
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    CATARC Automotive Test Center (Hulun Buir) Co., Ltd., Hulun Buir 021000
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https://castjournals.cast.org.cn/joweb/qcgyycl/EN/10.19710/J.cnki.1003-8817.20230023
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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