Influence of Yttria Stabilized Zirconia and Hydrothermal Treatment on Plasma Sprayed Hydroxyapatite Coatings
| Autor: | Hongfu Wang, Xiaozhong Ren, Xiaoguang Tian |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope 05 social sciences Energy-dispersive X-ray spectroscopy ttcp 02 engineering and technology 021001 nanoscience & nanotechnology Indentation hardness Hydrothermal circulation Chemical engineering Impurity Phase (matter) 0502 economics and business General Materials Science 0210 nano-technology 050203 business & management Yttria-stabilized zirconia |
| Zdroj: | Journal of Wuhan University of Technology-Mater. Sci. Ed.. 35:449-454 |
| ISSN: | 1993-0437 1000-2413 |
| DOI: | 10.1007/s11595-020-2277-6 |
| Popis: | A post-treatment of hydrothermal process was conducted to evaluate its effects on the material characteristics and mechanical properties of plasma-sprayed pure HA and HA/20% YSZ coatings. Surface morphology and microstructural changes, relative element contents as well as phase transformations were analyzed by scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffractometry. Both microhardness and Young’s modulus were measured. CaCO3 was found existing before and after the whole process of post-treatment. Peaks of impurity phases such as CaO, TCP, and TTCP of as-sprayed coatings were observed to disappear while HA peaks show a tendency of getting higher and wider over time. Surface morphology of SEM analysis presents a clear deposition behavior of ultrafine HA crystallized particles and cross-sectional analysis exhibits a dense and fine structure. Mechanical properties of HA/20%YSZ coatings are found to be significantly higher than those of pure HA coatings and both of which displayed an overall increase with the heating time, indicating enhanced performances. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink