Journal
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
Volume 12, Issue 2, Pages 282-293Publisher
WILEY
DOI: 10.1111/ijac.12145
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Funding
- National Science Council of Taiwan [NSC 100-2221-E-150-037, NSC 101-2221-E-150-028]
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Hydroxyapatite (HA) and Mg-substituted HA coatings were synthesized on Mg-9Al-1Zn and Ti-6Al-4V by the hydrothermal process. Grazing-incidence X-ray diffractograms showed the formation of calcium-magnesium-phosphate is resulted from the substitution of Mg2+-ions into HA crystal. The chemical state of Mg2+-ions in Mg-substituted HA coatings was examined by X-ray photoelectron spectroscopy. The shear test results showed the Mg-substituted HA coatings deposited on Mg-9Al-1Zn have higher shear strength than those coatings on Ti-6Al-4V. The Weibull model provided a powerful statistical method for assessing failure mechanism of hydrothermal coatings, which is attributed to a wear-out failure model with a Weibull modulus m>3.
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