| XIE Shi-ming,DAI Ming-jing,LIN Song-sheng,HOU Hui-jun,SHI Qian,QIU Wan-qi,WANG Yun-cheng.Effect of Arc Ion Plating Technological Parameters on Deposition of NiCoCrAlYTa Coatings[J],46(1):29-35 |
| Effect of Arc Ion Plating Technological Parameters on Deposition of NiCoCrAlYTa Coatings |
| Received:June 28, 2016 Revised:January 20, 2017 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2017.01.005 |
| KeyWord:arc ion plating NiCoCrAlYTa coating technological parameters deposition rate microstructure composition |
| Author | Institution |
| XIE Shi-ming |
1.School of Materials Science and Engineering, South China University of Technology, Guangzhou , China; 2.Guangdong Institute of New Materials, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Gunangdong for Modern Surface Engineering Technology, Guangzhou , China |
| DAI Ming-jing |
Guangdong Institute of New Materials, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Gunangdong for Modern Surface Engineering Technology, Guangzhou , China |
| LIN Song-sheng |
Guangdong Institute of New Materials, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Gunangdong for Modern Surface Engineering Technology, Guangzhou , China |
| HOU Hui-jun |
Guangdong Institute of New Materials, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Gunangdong for Modern Surface Engineering Technology, Guangzhou , China |
| SHI Qian |
Guangdong Institute of New Materials, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Gunangdong for Modern Surface Engineering Technology, Guangzhou , China |
| QIU Wan-qi |
School of Materials Science and Engineering, South China University of Technology, Guangzhou , China |
| WANG Yun-cheng |
China National South Aviation Industry Co. Ltd, Zhuzhou , China |
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| Abstract: |
| The work aims to study the effect of technological parameters (pressure, bias voltage and arc current) on deposition rate, microstructure and composition of coatings. The NiCoCrAlYTa coatings were deposited on nickel-based superalloy by changing air pressure, bias voltage and arc current in orthogonal experiment by arc ion plating (AIP). The cross-section and surface morphology of the coatings were analyzed by SEM, composition was detected by EDS, porosity was detected by metallographic microscope and thickness was examined by 3D contourgraph. Arc current had most significant effect on deposition rate of coatings, bias voltage the second and air pressure the least. However, the bias voltage had most significant effect on porosity of the coatings, air pressure the second and arc current the least. The coating microstructures transformed from columnar to lamellar structure with the increase of bias voltage. The number of large particles on the coatings first increased and then decreased with the increase of arc current. The coating composition was subject to segregation with respect to that of target. Compared with the target, the Ni and Al content of the coatings decreased while Co and Cr content of the coatings increased. The composition segregation effect intensified with the increase of bias voltage. However, it first intensified and then weakened with the increase of arc current. Air pressure had no obvious impact on composition segregation. Low air pressure and high current can improve the compactness of NiCoCrAlYTa coating, decrease the composition segregation and reduce loss of Al, a vital element in the coatings. The optimal technological parameters obtained in experiment were: air pressure of 0.5 Pa and arc current of 110 A, the bias voltage can be further optimized by examining relevant performance. |
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