|
| Removing HY3 Coating on DZ125 Alloy |
| Received:September 18, 2018 Revised:December 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.12.021 |
| KeyWord:overlay coating HY3 AIP DZ125 alloy removing technology chemical method |
| Author | Institution |
| CAI Yan |
1. Beijing Institute of Aeronautical Materials , China; 2. Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
| LI Jian-ping |
1. Beijing Institute of Aeronautical Materials , China |
| TANG Zhi-hui |
2. Aviation Key Laboratory of Science and Technology on advanced Corrosion and Protection for Aviation Material, Beijing , China |
| MU Ren-de |
1. Beijing Institute of Aeronautical Materials , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To research the method for chemical removing of HY3 overlay coating on DZ125 alloy. Methods The arc vacuum spraying technology was used to prepare overlay coating on the controlled directional solidification nickel-base su-per-alloy. The coating was basically removed via chemical method. The removing rate of HY3 and DZ125 alloy with removing solution 1# and 2# were compared through the weight loss method. The microstructure of HY3 coating and DZ125 substrate after removing were observed with SEM. Results The coatings were fully removed by solution 2# 100 min later; while it took over 100 min for soluntion1#. Both have small corrosion to DZ125 alloy. For the same alloy, the removing ratio of solution 1# and solution 1# was 1:13. In solution 1#, the corrosion rate of alloy and coating was 1:87.65. In solition 2#, the corrosion rate of alloy and coating is 1:6.81. Conclusion It is showed that solution 1# is more suitable for removing the coating. |
| Close |