Journal of Thermal Spray Technology

, Volume 27, Issue 8, pp 1381–1387 | Cite as

Plasma-Sprayed Hydroxyapatite Coating for Improved Corrosion Resistance and Bioactivity of Magnesium Alloy

  • Ya Li GaoEmail author
  • Yu Liu
  • Xue Ying Song
Peer Reviewed


In the present study, the corrosion resistance and bioactivity of AZ91HP magnesium alloy were improved by plasma spraying hydroxyapatite (HA) coating. X-ray diffraction measurements indicated that the coating formed amorphous and little β-Ca3 (PO4)2 besides of HA. The corrosion resistance and bioactivity of the coating and magnesium alloy in simulated body fluid were investigated using immersion test. The coating showed lower corrosion rate and better bioactivity than magnesium alloy. The coating significantly improved the hydrophilicity of Mg alloy. The prothrombin time of the coating was 18 s, and the prothrombin time of Mg alloy was 11 s, so the coating had better anticoagulant activity.


bioactivity corrosion resistance hydroxyapatite coating magnesium alloy plasma spraying 



This research was supported by the funding from the National Natural Science Foundation of China (NSFC. No 51704073), Jilin Province Department of Education “Thirteen Five” science and technology research project of China (No. JJKH20180427KJ), and Science and Technology Development of Jilin Province (No. 20180520065). Jilin City Science and Technology Bureau Outstanding Young Talents Training Project (No. 201831785).


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Copyright information

© ASM International 2018

Authors and Affiliations

  1. 1.School of Mechanical EngineeringNortheast Dianli UniversityJilinChina

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