Study on corrosion resistance of TC4 titanium alloy micro‐arc oxidation/(PTFE + graphite) composite coating
Source abstract
Abstract
Abstract Micro‐arc oxidation (MAO) coating was prepared on the surface of TC4 titanium alloy and sealed with (polytetrafluoroethylene [PTFE] + graphite) emulsion to obtain MAO/(PTFE + graphite) composite coating. The surface morphology and phase composition of the MAO coating were studied by scanning electron microscope (SEM) and X‐ray diffractometer (XRD). The corrosion resistance of the coating was studied by the potentiodynamic polarization curve and the scanning Kelvin probe (SKP) micro‐area voltage. The results show that the TiO 2 ceramic oxide coating formed on the surface of the titanium alloy substrate has the characteristics of porous structure, which will become a channel for corrosive media to enter the coating and accelerate the corrosion of the MAO coating. However, the MAO/(PTFE + graphite) composite coating can prevent corrosive media from entering the coating and improve the corrosion resistance of the composite coating. The corrosion potential increased from 0.146 V to 0.241 V, the corrosion current density decreased from 4.31 × 10 –7 A/cm 2 to 7.92 × 10 –8 A/cm 2 , and the self‐corrosion current dropped to one fifth of the MAO coating. In addition, the charge transfer resistance has also increased from 5.305 × 10 4 Ω·cm 2 to 2.493 × 10 5 Ω·cm 2 .
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Metal and Thin Film Mechanics · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) Chengdu Sichuan China
School of New Energy and Materials Southwest Petroleum University Chengdu Sichuan China
Funding
National Natural Science Foundation of China · State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
References (40)
Show source-provided references
1. 10.1016/S1875-5372(14)60082-510.1016/S1875-5372(14)60082-5 ↗
2. 10.1007/s12666-019-01808-810.1007/s12666-019-01808-8 ↗
3. 10.3390/coatings904024910.3390/coatings9040249 ↗
4. 10.1016/j.msea.2008.03.04110.1016/j.msea.2008.03.041 ↗
5. 10.1016/j.surfcoat.2021.12731710.1016/j.surfcoat.2021.127317 ↗
6. 10.1515/CORRREV.2000.18.4-5.29510.1515/CORRREV.2000.18.4-5.295 ↗
7. 10.1504/IJNBM.2007.01651710.1504/IJNBM.2007.016517 ↗
8. 10.1007/s12666-019-01804-y10.1007/s12666-019-01804-y ↗
9. Research progress on laser surface treatment of titanium and titanium alloys
10. 10.1016/j.apsusc.2019.06.00610.1016/j.apsusc.2019.06.006 ↗
11. ZhongYS.Study on the micro‐arc oxidation composite ceramic coating on tc4 surface and its thermal‐induced failure behavior [dissertation].Harbin Institute of Technology China.2011.
12. 10.1016/j.surfin.2020.10054610.1016/j.surfin.2020.100546 ↗
13. 10.1016/j.surfcoat.2008.03.01110.1016/j.surfcoat.2008.03.011 ↗
14. 10.1016/S0142-9612(02)00316-210.1016/S0142-9612(02)00316-2 ↗
15. 10.1016/S1875-5372(14)60100-410.1016/S1875-5372(14)60100-4 ↗
16. Study on sliding dry friction properties of TiNi/Ti2Ni modified layer on TC4 alloy under different loads
17. 10.1179/174329407X26058210.1179/174329407X260582 ↗
18. 10.1179/sur.1985.1.2.9310.1179/sur.1985.1.2.93 ↗
19. 10.4028/www.scientific.net/AMR.683.57710.4028/www.scientific.net/AMR.683.577 ↗
20. Effect of Er on the characteristics of an oxide coating prepared by micro‐arc oxidation on a 7075 aluminum alloy10.20964/2020.04.51 ↗
21. Development and application of micro‐arc oxidation technology
22. 10.1080/09506608.2018.146649210.1080/09506608.2018.1466492 ↗
23. 10.1016/j.pmatsci.2013.08.00210.1016/j.pmatsci.2013.08.002 ↗
24. 10.20964/2020.01.4810.20964/2020.01.48 ↗
25. 10.1016/j.cap.2011.06.02310.1016/j.cap.2011.06.023 ↗
26. 10.1016/j.surfcoat.2018.10.08910.1016/j.surfcoat.2018.10.089 ↗
27. 10.1016/j.biotri.2020.10013110.1016/j.biotri.2020.100131 ↗
28. 10.1016/S1003-6326(08)60043-610.1016/S1003-6326(08)60043-6 ↗
29. 10.1016/j.matlet.2019.12657810.1016/j.matlet.2019.126578 ↗
30. 10.1007/s11249-018-1052-810.1007/s11249-018-1052-8 ↗
31. 10.1016/j.jallcom.2008.06.13510.1016/j.jallcom.2008.06.135 ↗
32. Influence of organic sealed on the corrosion behaviors of micro arc oxidation coated ZM5 magnesium alloy
33. 10.1016/j.surfcoat.2014.03.00410.1016/j.surfcoat.2014.03.004 ↗
34. 10.1016/j.surfcoat.2010.03.04910.1016/j.surfcoat.2010.03.049 ↗
35. 10.1080/10402004.2019.169503210.1080/10402004.2019.1695032 ↗
36. 10.1016/j.apsusc.2015.11.08610.1016/j.apsusc.2015.11.086 ↗
37. 10.1016/j.apsusc.2004.03.23110.1016/j.apsusc.2004.03.231 ↗
38. 10.1016/j.apsusc.2015.03.05110.1016/j.apsusc.2015.03.051 ↗
39. 10.1016/j.apsusc.2017.12.04710.1016/j.apsusc.2017.12.047 ↗
40. The corrosion and mechanical properties of spark plasma sintered composites reinforced with titanium diboride10.1016/j.jallcom.2016.07.132 ↗