Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances
This study presents the effect of heat treatment on porosity, phase composition, microhardness, and wear and corrosion resistances of the thermal sprayed NiCr20 coating after sealing with aluminum phosphate. The annealing temperatures were varied in a range of 400 to 1000°C. The obtained results ind...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Electrochemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/8796958 |
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| author | Van Tuan Nguyen Quy Le Thu Tuan Anh Nguyen Quoc Cuong Ly Ly Pham Thi Ha Pham Thi Thanh Dinh Thi Mai |
| author_facet | Van Tuan Nguyen Quy Le Thu Tuan Anh Nguyen Quoc Cuong Ly Ly Pham Thi Ha Pham Thi Thanh Dinh Thi Mai |
| author_sort | Van Tuan Nguyen |
| collection | DOAJ |
| description | This study presents the effect of heat treatment on porosity, phase composition, microhardness, and wear and corrosion resistances of the thermal sprayed NiCr20 coating after sealing with aluminum phosphate. The annealing temperatures were varied in a range of 400 to 1000°C. The obtained results indicated the porosity of coating decreased with increasing the annealing temperature. After treatment at temperatures in range of 800-1000°C, more than 90% of initial pores in the coating were successfully filled with the sealants. The XRD data revealed not only the formation of new phases of other compounds, but also the interaction between coating and sealant. After heat treatment, wear resistance of coating was 12 times higher than that without heat treatment. The corrosion test in H2SO4 solution indicated that the presence of sealant in coatings increased their corrosion resistance. From these findings, application of these NiCr20 coatings to protect steel against wear and corrosion appears very promising. |
| format | Article |
| id | doaj-art-44b0ccccb56b43b9946f285ace62c51d |
| institution | Kabale University |
| issn | 2090-3529 2090-3537 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Electrochemistry |
| spelling | doaj-art-44b0ccccb56b43b9946f285ace62c51d2025-02-03T06:14:01ZengWileyInternational Journal of Electrochemistry2090-35292090-35372019-01-01201910.1155/2019/87969588796958Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion ResistancesVan Tuan Nguyen0Quy Le Thu1Tuan Anh Nguyen2Quoc Cuong Ly3Ly Pham Thi4Ha Pham Thi5Thanh Dinh Thi Mai6Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, VietnamNational Key Laboratory for Welding and Surface treatment Technologies, National Research Institute of Mechanical Engineering, No.4 Pham Van Dong, Cau Giay, Hanoi, VietnamInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, VietnamInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, VietnamInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, VietnamInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, VietnamInstitute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, VietnamThis study presents the effect of heat treatment on porosity, phase composition, microhardness, and wear and corrosion resistances of the thermal sprayed NiCr20 coating after sealing with aluminum phosphate. The annealing temperatures were varied in a range of 400 to 1000°C. The obtained results indicated the porosity of coating decreased with increasing the annealing temperature. After treatment at temperatures in range of 800-1000°C, more than 90% of initial pores in the coating were successfully filled with the sealants. The XRD data revealed not only the formation of new phases of other compounds, but also the interaction between coating and sealant. After heat treatment, wear resistance of coating was 12 times higher than that without heat treatment. The corrosion test in H2SO4 solution indicated that the presence of sealant in coatings increased their corrosion resistance. From these findings, application of these NiCr20 coatings to protect steel against wear and corrosion appears very promising.http://dx.doi.org/10.1155/2019/8796958 |
| spellingShingle | Van Tuan Nguyen Quy Le Thu Tuan Anh Nguyen Quoc Cuong Ly Ly Pham Thi Ha Pham Thi Thanh Dinh Thi Mai Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances International Journal of Electrochemistry |
| title | Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances |
| title_full | Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances |
| title_fullStr | Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances |
| title_full_unstemmed | Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances |
| title_short | Arc Thermal Spray NiCr20 Alloy Coating: Fabrication, Sealant, Heat Treatment, Wear, and Corrosion Resistances |
| title_sort | arc thermal spray nicr20 alloy coating fabrication sealant heat treatment wear and corrosion resistances |
| url | http://dx.doi.org/10.1155/2019/8796958 |
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