Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application
NiTi alloys, known for their excellent biocompatibility, have broad application prospects in the biomedical field, making surface quality and corrosion resistance critical for practical applications. This study employs nanosecond pulsed laser annealing to improve the surface properties of NiTi alloy...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Additive Manufacturing Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772369025000398 |
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| author | Chao Yang Tao Long An Yan Hongwei Ma Haizhou Lu Liang Liang Weisi Cai |
| author_facet | Chao Yang Tao Long An Yan Hongwei Ma Haizhou Lu Liang Liang Weisi Cai |
| author_sort | Chao Yang |
| collection | DOAJ |
| description | NiTi alloys, known for their excellent biocompatibility, have broad application prospects in the biomedical field, making surface quality and corrosion resistance critical for practical applications. This study employs nanosecond pulsed laser annealing to improve the surface properties of NiTi alloys fabricated by selective laser melting (SLM). The results show that laser annealing significantly reduces surface roughness, with the average roughness (Ra) decreasing from 8.76 µm to 1.42 µm. Meanwhile, potential dynamic polarization analysis conducted at 37 °C in Hank’s solution indicates that laser annealing effectively enhances corrosion resistance, with the corrosion potential shifting positively from -0.68 V to -0.23 V and the corrosion current density decreasing from 3.580 μA·cm⁻² to 0.151 μA·cm⁻². This improvement is attributed to the reduction in surface roughness, grain refinement, and the formation of a more stable oxide layer through laser annealing. This study not only validates the potential of laser annealing for surface modification of SLMed NiTi alloys but also provides valuable insights for their further optimization in biomedical applications. |
| format | Article |
| id | doaj-art-89ff6cdc23234b05b9d3aa5d945064fb |
| institution | Kabale University |
| issn | 2772-3690 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Additive Manufacturing Letters |
| spelling | doaj-art-89ff6cdc23234b05b9d3aa5d945064fb2025-08-21T04:17:55ZengElsevierAdditive Manufacturing Letters2772-36902025-07-011410030610.1016/j.addlet.2025.100306Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical applicationChao Yang0Tao Long1An Yan2Hongwei Ma3Haizhou Lu4Liang Liang5Weisi Cai6National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaSchool of Mechatronic Engineering, Guangdong Polytechnic Normal University, Guangzhou 510665, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou 510640, ChinaNational Engineering Research Center of Near-Net-Shape Forming for Metallic Materials, Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials, South China University of Technology, Guangzhou 510640, China; Corresponding author.NiTi alloys, known for their excellent biocompatibility, have broad application prospects in the biomedical field, making surface quality and corrosion resistance critical for practical applications. This study employs nanosecond pulsed laser annealing to improve the surface properties of NiTi alloys fabricated by selective laser melting (SLM). The results show that laser annealing significantly reduces surface roughness, with the average roughness (Ra) decreasing from 8.76 µm to 1.42 µm. Meanwhile, potential dynamic polarization analysis conducted at 37 °C in Hank’s solution indicates that laser annealing effectively enhances corrosion resistance, with the corrosion potential shifting positively from -0.68 V to -0.23 V and the corrosion current density decreasing from 3.580 μA·cm⁻² to 0.151 μA·cm⁻². This improvement is attributed to the reduction in surface roughness, grain refinement, and the formation of a more stable oxide layer through laser annealing. This study not only validates the potential of laser annealing for surface modification of SLMed NiTi alloys but also provides valuable insights for their further optimization in biomedical applications.http://www.sciencedirect.com/science/article/pii/S2772369025000398NiTi shape memory alloysSelective laser meltingLaser annealingCorrosion behavior |
| spellingShingle | Chao Yang Tao Long An Yan Hongwei Ma Haizhou Lu Liang Liang Weisi Cai Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application Additive Manufacturing Letters NiTi shape memory alloys Selective laser melting Laser annealing Corrosion behavior |
| title | Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application |
| title_full | Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application |
| title_fullStr | Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application |
| title_full_unstemmed | Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application |
| title_short | Improved corrosion resistance of selective laser melted NiTi alloys via nanosecond pulsed laser annealing treatment for biomedical application |
| title_sort | improved corrosion resistance of selective laser melted niti alloys via nanosecond pulsed laser annealing treatment for biomedical application |
| topic | NiTi shape memory alloys Selective laser melting Laser annealing Corrosion behavior |
| url | http://www.sciencedirect.com/science/article/pii/S2772369025000398 |
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