Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding
To enhance the tribological properties of the coatings and to inhibit cracking, sandwich-structured composite coatings were fabricated, consisting of a Ni60CuMo/IN718 transition layer and a Ni60CuMo/Ni-coated Cu wear-resistant layer with four different Ni-coated Cu contents. The results indicate tha...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
|
| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/15/12/1429 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850240677142593536 |
|---|---|
| author | Fengqin Ji Xincheng Li Songyang Zhang Ming Pang |
| author_facet | Fengqin Ji Xincheng Li Songyang Zhang Ming Pang |
| author_sort | Fengqin Ji |
| collection | DOAJ |
| description | To enhance the tribological properties of the coatings and to inhibit cracking, sandwich-structured composite coatings were fabricated, consisting of a Ni60CuMo/IN718 transition layer and a Ni60CuMo/Ni-coated Cu wear-resistant layer with four different Ni-coated Cu contents. The results indicate that the transition layer inhibits the crack formation in the coating, and the refined grain structure stabilizes its average hardness at approximately 485 HV<sub>0.5</sub>. Increasing the Cu content in the wear-resistant layer exacerbates the segregation of the Cu-rich solid solution phases and refines the in situ-generated Cr<sub>7</sub>C<sub>3</sub>, TiC, and NbC phases. The average hardness of the wear-resistant layer decreases from 474 HV<sub>0.5</sub> to 408 HV<sub>0.5</sub> as the Ni-coated Cu content increases from zero to 75%. The coating with 50% Ni-coated Cu has the best Cu self-lubricating properties and exhibits the best wear resistance at both room and high temperatures. At room temperature, abrasive wear is the primary wear mechanism in the coatings. Although the ductility of the coatings is improved with increasing Cu content, excessive Cu reduces the hardness and load-bearing capacity. At 300 °C, oxidation wear becomes the dominant wear mechanism, accompanied by plastic deformation and three-body wear as the Cu content increases. At 500 °C, severe oxidation wear is the dominant mechanism, with excessive Cu leading to oxidation film failure. |
| format | Article |
| id | doaj-art-ac8d12b6569046898f6da37e1f66418e |
| institution | OA Journals |
| issn | 2072-666X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj-art-ac8d12b6569046898f6da37e1f66418e2025-08-20T02:00:47ZengMDPI AGMicromachines2072-666X2024-11-011512142910.3390/mi15121429Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser CladdingFengqin Ji0Xincheng Li1Songyang Zhang2Ming Pang3College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaCollege of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaCollege of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaCollege of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, ChinaTo enhance the tribological properties of the coatings and to inhibit cracking, sandwich-structured composite coatings were fabricated, consisting of a Ni60CuMo/IN718 transition layer and a Ni60CuMo/Ni-coated Cu wear-resistant layer with four different Ni-coated Cu contents. The results indicate that the transition layer inhibits the crack formation in the coating, and the refined grain structure stabilizes its average hardness at approximately 485 HV<sub>0.5</sub>. Increasing the Cu content in the wear-resistant layer exacerbates the segregation of the Cu-rich solid solution phases and refines the in situ-generated Cr<sub>7</sub>C<sub>3</sub>, TiC, and NbC phases. The average hardness of the wear-resistant layer decreases from 474 HV<sub>0.5</sub> to 408 HV<sub>0.5</sub> as the Ni-coated Cu content increases from zero to 75%. The coating with 50% Ni-coated Cu has the best Cu self-lubricating properties and exhibits the best wear resistance at both room and high temperatures. At room temperature, abrasive wear is the primary wear mechanism in the coatings. Although the ductility of the coatings is improved with increasing Cu content, excessive Cu reduces the hardness and load-bearing capacity. At 300 °C, oxidation wear becomes the dominant wear mechanism, accompanied by plastic deformation and three-body wear as the Cu content increases. At 500 °C, severe oxidation wear is the dominant mechanism, with excessive Cu leading to oxidation film failure.https://www.mdpi.com/2072-666X/15/12/1429additive manufacturingNi60CuMoself-lubricationwear resistanceRuT400 |
| spellingShingle | Fengqin Ji Xincheng Li Songyang Zhang Ming Pang Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding Micromachines additive manufacturing Ni60CuMo self-lubrication wear resistance RuT400 |
| title | Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding |
| title_full | Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding |
| title_fullStr | Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding |
| title_full_unstemmed | Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding |
| title_short | Influence of Cu Content Variation on the Tribological Properties of Ni60CuMo with Sandwich-Structured Composite Coatings by Laser Cladding |
| title_sort | influence of cu content variation on the tribological properties of ni60cumo with sandwich structured composite coatings by laser cladding |
| topic | additive manufacturing Ni60CuMo self-lubrication wear resistance RuT400 |
| url | https://www.mdpi.com/2072-666X/15/12/1429 |
| work_keys_str_mv | AT fengqinji influenceofcucontentvariationonthetribologicalpropertiesofni60cumowithsandwichstructuredcompositecoatingsbylasercladding AT xinchengli influenceofcucontentvariationonthetribologicalpropertiesofni60cumowithsandwichstructuredcompositecoatingsbylasercladding AT songyangzhang influenceofcucontentvariationonthetribologicalpropertiesofni60cumowithsandwichstructuredcompositecoatingsbylasercladding AT mingpang influenceofcucontentvariationonthetribologicalpropertiesofni60cumowithsandwichstructuredcompositecoatingsbylasercladding |