Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution
Porous Ni–Cr–Mo–Cu alloys were prepared via reaction synthesis of mixed powders. Electrochemical performance test and weight-loss method were used to evaluate the effects of chromium content in the range of 10 ∼ 30 wt% on the alloys corrosion performance in 30 wt% H _3 PO _4 solution. The microstruc...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac1d1a |
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| author | Junsheng Yang Haoran Zou Xide Li Junxiao Chen Li Lv Yi Wen Yiquan Fan Lieqiang Xiong Yuzuo Liu |
| author_facet | Junsheng Yang Haoran Zou Xide Li Junxiao Chen Li Lv Yi Wen Yiquan Fan Lieqiang Xiong Yuzuo Liu |
| author_sort | Junsheng Yang |
| collection | DOAJ |
| description | Porous Ni–Cr–Mo–Cu alloys were prepared via reaction synthesis of mixed powders. Electrochemical performance test and weight-loss method were used to evaluate the effects of chromium content in the range of 10 ∼ 30 wt% on the alloys corrosion performance in 30 wt% H _3 PO _4 solution. The microstructure, element valence and phase composition of the porous Ni–Cr–Mo–Cu alloys were characterized via scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and x-ray diffraction analysis (XRD), respectively. And the results show that the alloys exhibited serviceable corrosion performance and the corrosion behavior was better than that of pure Ni and Cu. Incremental changes in the chromium contents within a certain range enhanced the corrosion resistance of the alloys. These alloys with 30 wt% chromium exhibited excellent anti-corrosion ability in the H _3 PO _4 solution. The electrochemical test displayed that the double capacitive loops of the alloys in the H _3 PO _4 solution increased with the chromium content; at chromium content of 30 wt%, the charge transfer resistance and activation energy were 1123 Ω and 74.10 kJ mol ^−1 , respectively. The possible corrosion-inhibition mechanism was examined by XPS, which may be owing to the formation of MoO _x (x = 1, 2, 3) and Cr _2 O _3 passivation layers in the H _3 PO _4 solution, which prevent further corrosion in acid environments. |
| first_indexed | 2024-03-12T15:43:28Z |
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| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:43:28Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-c2afc4df9eef4efe880b82c85e1f5e1a2023-08-09T15:53:41ZengIOP PublishingMaterials Research Express2053-15912021-01-018909652210.1088/2053-1591/ac1d1aEffects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solutionJunsheng Yang0https://orcid.org/0000-0003-3219-9619Haoran Zou1https://orcid.org/0000-0002-8824-8398Xide Li2https://orcid.org/0000-0002-2940-9745Junxiao Chen3Li Lv4Yi Wen5Yiquan Fan6Lieqiang Xiong7Yuzuo Liu8School of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaHubei University of Arts and Science , Xiangyang, Hubei Province, 441053, People’s Republic of ChinaInformation Management and Information System, Hubei University of Economics , Wuhan, Hubei Province, 430023, People’s Republic of ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University , Wuhan, Hubei Province, 430023, People’s Republic of ChinaPorous Ni–Cr–Mo–Cu alloys were prepared via reaction synthesis of mixed powders. Electrochemical performance test and weight-loss method were used to evaluate the effects of chromium content in the range of 10 ∼ 30 wt% on the alloys corrosion performance in 30 wt% H _3 PO _4 solution. The microstructure, element valence and phase composition of the porous Ni–Cr–Mo–Cu alloys were characterized via scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and x-ray diffraction analysis (XRD), respectively. And the results show that the alloys exhibited serviceable corrosion performance and the corrosion behavior was better than that of pure Ni and Cu. Incremental changes in the chromium contents within a certain range enhanced the corrosion resistance of the alloys. These alloys with 30 wt% chromium exhibited excellent anti-corrosion ability in the H _3 PO _4 solution. The electrochemical test displayed that the double capacitive loops of the alloys in the H _3 PO _4 solution increased with the chromium content; at chromium content of 30 wt%, the charge transfer resistance and activation energy were 1123 Ω and 74.10 kJ mol ^−1 , respectively. The possible corrosion-inhibition mechanism was examined by XPS, which may be owing to the formation of MoO _x (x = 1, 2, 3) and Cr _2 O _3 passivation layers in the H _3 PO _4 solution, which prevent further corrosion in acid environments.https://doi.org/10.1088/2053-1591/ac1d1aporous alloysNi–Cr–Mo–Cuporositypassivation film |
| spellingShingle | Junsheng Yang Haoran Zou Xide Li Junxiao Chen Li Lv Yi Wen Yiquan Fan Lieqiang Xiong Yuzuo Liu Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution Materials Research Express porous alloys Ni–Cr–Mo–Cu porosity passivation film |
| title | Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution |
| title_full | Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution |
| title_fullStr | Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution |
| title_full_unstemmed | Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution |
| title_short | Effects of Cr content on the corrosion behavior of porous Ni–Cr–Mo–Cu alloys in H3PO4 solution |
| title_sort | effects of cr content on the corrosion behavior of porous ni cr mo cu alloys in h3po4 solution |
| topic | porous alloys Ni–Cr–Mo–Cu porosity passivation film |
| url | https://doi.org/10.1088/2053-1591/ac1d1a |
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