Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature
To investigate the corrosion behavior of WC–Co composite coating, plasma transferred arc (PTA) welding was applied to prepare WC–Co coating on hull steel EH40 for achieving good metallurgical bonding. The phases of coatings were mainly composed of WC particles, solid solution γ-Co, Fe3Ni2, SiO2 and...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2022-05-01
|
| Series: | High Temperature Materials and Processes |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/htmp-2022-0010 |
| _version_ | 1818027393666777088 |
|---|---|
| author | Cao QiZheng Fan Li Chen HaiYan Xu YuRong Dong LiHua |
| author_facet | Cao QiZheng Fan Li Chen HaiYan Xu YuRong Dong LiHua |
| author_sort | Cao QiZheng |
| collection | DOAJ |
| description | To investigate the corrosion behavior of WC–Co composite coating, plasma transferred arc (PTA) welding was applied to prepare WC–Co coating on hull steel EH40 for achieving good metallurgical bonding. The phases of coatings were mainly composed of WC particles, solid solution γ-Co, Fe3Ni2, SiO2 and Mo2C. After electrochemical test, it can be concluded that Co-based coating with 45% WC content has better corrosion resistance in low temperature marine environment for obtaining denser oxide film. Through X-ray photo electron spectroscopy (XPS) analysis, the main corrosion products of immersion were Co(OH)2 and Co3O4. These corrosion products aggregate to form a stable corrosion product film, which plays some protective role for the coating. Hard particle WC is also partially oxidized to WO3. The pitting hole of 60% WC is the most serious. Pitting corrosion is easy to occur at the interface defects. |
| first_indexed | 2024-12-10T04:47:11Z |
| format | Article |
| id | doaj.art-7ee0a2a5d2724ea79af932ea02cb1b43 |
| institution | Directory Open Access Journal |
| issn | 2191-0324 |
| language | English |
| last_indexed | 2024-12-10T04:47:11Z |
| publishDate | 2022-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | High Temperature Materials and Processes |
| spelling | doaj.art-7ee0a2a5d2724ea79af932ea02cb1b432022-12-22T02:01:42ZengDe GruyterHigh Temperature Materials and Processes2191-03242022-05-0141119120510.1515/htmp-2022-0010Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperatureCao QiZheng0Fan Li1Chen HaiYan2Xu YuRong3Dong LiHua4College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, ChinaCollege of Mechanical and Electronic Engineering, Shanghai Jian Qiao University, Shanghai 201306, ChinaCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, ChinaCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, ChinaCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, ChinaTo investigate the corrosion behavior of WC–Co composite coating, plasma transferred arc (PTA) welding was applied to prepare WC–Co coating on hull steel EH40 for achieving good metallurgical bonding. The phases of coatings were mainly composed of WC particles, solid solution γ-Co, Fe3Ni2, SiO2 and Mo2C. After electrochemical test, it can be concluded that Co-based coating with 45% WC content has better corrosion resistance in low temperature marine environment for obtaining denser oxide film. Through X-ray photo electron spectroscopy (XPS) analysis, the main corrosion products of immersion were Co(OH)2 and Co3O4. These corrosion products aggregate to form a stable corrosion product film, which plays some protective role for the coating. Hard particle WC is also partially oxidized to WO3. The pitting hole of 60% WC is the most serious. Pitting corrosion is easy to occur at the interface defects.https://doi.org/10.1515/htmp-2022-0010eh40 steellow-temperature corrosionplasma transferred arcwc–co composite coatings |
| spellingShingle | Cao QiZheng Fan Li Chen HaiYan Xu YuRong Dong LiHua Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature High Temperature Materials and Processes eh40 steel low-temperature corrosion plasma transferred arc wc–co composite coatings |
| title | Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature |
| title_full | Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature |
| title_fullStr | Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature |
| title_full_unstemmed | Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature |
| title_short | Corrosion behavior of WC–Co coating by plasma transferred arc on EH40 steel in low-temperature |
| title_sort | corrosion behavior of wc co coating by plasma transferred arc on eh40 steel in low temperature |
| topic | eh40 steel low-temperature corrosion plasma transferred arc wc–co composite coatings |
| url | https://doi.org/10.1515/htmp-2022-0010 |
| work_keys_str_mv | AT caoqizheng corrosionbehaviorofwccocoatingbyplasmatransferredarconeh40steelinlowtemperature AT fanli corrosionbehaviorofwccocoatingbyplasmatransferredarconeh40steelinlowtemperature AT chenhaiyan corrosionbehaviorofwccocoatingbyplasmatransferredarconeh40steelinlowtemperature AT xuyurong corrosionbehaviorofwccocoatingbyplasmatransferredarconeh40steelinlowtemperature AT donglihua corrosionbehaviorofwccocoatingbyplasmatransferredarconeh40steelinlowtemperature |