Effect of Ultrasonic Treatment on Chemical Stripping Behavior of Aluminum Coating on K6509 Co-Based Superalloy
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| Publicado en: | Materials vol. 18, no. 17 (2025), p. 3979-4000 |
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| Otros Autores: | , , , , , , , , , |
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MDPI AG
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| Acceso en línea: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 001 | 3249703481 | ||
| 003 | UK-CbPIL | ||
| 022 | |a 1996-1944 | ||
| 024 | 7 | |a 10.3390/ma18173979 |2 doi | |
| 035 | |a 3249703481 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
| 084 | |a 231532 |2 nlm | ||
| 100 | 1 | |a Jin, Yuanyuan |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 245 | 1 | |a Effect of Ultrasonic Treatment on Chemical Stripping Behavior of Aluminum Coating on K6509 Co-Based Superalloy | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a In this study, 10% nitric acid was employed to remove the aluminum coating on the cobalt-based superalloy K6509, with a focus on elucidating the corrosion mechanism and evaluating the effect of ultrasonic on the removal process. The results shows that ultrasonic treatment (40 kHz) significantly improves coating removal efficiency, increasing the maximum corrosion rate by 46.49% from 2.5413 × 10−7 g·s−1·mm−2 to 4.7488 × 10−7 g·s−1·mm−2 and reducing removal time from 10 min to 6 min. This enhancement is attributed to cavitation effect of ultrasonic bubbles and the shockwave-accelerated ion diffusion, which together facilitate more efficient coating degradation and results in a smoother surface. In terms of corrosion behavior, the difference in phase composition between the outer layer and the interdiffusion zone (IDZ) plays a decisive role. The outer layer is primarily composed of β-(Co,Ni)Al phase, which is thermodynamically less stable in acidic environments and thus readily dissolves in 10% HNO3. In contrast, the IDZ mainly consists of Cr23C6, which exhibit high chemical stability and a strong tendency to passivate. These characteristics render the IDZ highly resistant to nitric acid attack, thereby forming a protective barrier that limits acid penetration and helps maintain the integrity of the substrate. | |
| 651 | 4 | |a Japan | |
| 653 | |a Turbines | ||
| 653 | |a Thermal cycling | ||
| 653 | |a Acid resistance | ||
| 653 | |a Corrosion mechanisms | ||
| 653 | |a Electrodes | ||
| 653 | |a Substrates | ||
| 653 | |a Interdiffusion | ||
| 653 | |a Ultrasonic processing | ||
| 653 | |a Microscopy | ||
| 653 | |a Protective coatings | ||
| 653 | |a Etching | ||
| 653 | |a Aluminum | ||
| 653 | |a Phase composition | ||
| 653 | |a Superalloys | ||
| 653 | |a Aluminum coatings | ||
| 653 | |a Corrosion rate | ||
| 653 | |a Nitric acid | ||
| 653 | |a Cavitation | ||
| 653 | |a Remanufacturing | ||
| 653 | |a Cobalt base alloys | ||
| 653 | |a Ion diffusion | ||
| 653 | |a Corrosion | ||
| 700 | 1 | |a Xie, Cheng |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 700 | 1 | |a Sun, Ke |u Aero Engine Corporation of China, South Industry Co., Ltd., Zhuzhou 412002, China | |
| 700 | 1 | |a Li Zehuan |u Aero Engine Corporation of China, South Industry Co., Ltd., Zhuzhou 412002, China | |
| 700 | 1 | |a Wang, Xin |u Aero Engine Corporation of China, South Industry Co., Ltd., Zhuzhou 412002, China | |
| 700 | 1 | |a Ma, Xin |u Aero Engine Corporation of China, South Industry Co., Ltd., Zhuzhou 412002, China | |
| 700 | 1 | |a Wang, Hui |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 700 | 1 | |a Shang Rongrong |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 700 | 1 | |a Zhou Xuxian |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 700 | 1 | |a Li, Yidi |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 700 | 1 | |a Li, Yunping |u State Key Lab for Powder Metallurgy, Central South University, Changsha 410083, China; jinyuanyuan83@csu.edu.cn (Y.J.); youxianboy@163.com (C.X.); | |
| 773 | 0 | |t Materials |g vol. 18, no. 17 (2025), p. 3979-4000 | |
| 786 | 0 | |d ProQuest |t Materials Science Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3249703481/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3249703481/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3249703481/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |