Hydrothermal Crystallization with Microstructural Self-Healing Effect on Mechanical and Failure Behaviors of Plasma-Sprayed Hydroxyapatite Coatings - Biological and Biomedical Coatings: Processing and Characterization - page 286

residual strain, which resulted from high-temperature heat treatments, at the coating/
substrate interface.
In addition, the failure behaviors of plasma-sprayed HACs is also an important task
review, and the statistics can help to evaluate the data distribution, statistical significance,
and predict the long-term stability of biomaterials for the further clinical applications.
Reliability engineering via a powerful statistical function of the Weibull model can not
only evaluate the failure probability and failure modes of materials, but predict the frac-
ture possibility, which resulted from the stages of material design and manufacturing pro-
cesses. Biological coatings with a higher Weibull modulus and a wearout failure with IFR
are adopted as it is an indicator for clinical use or lesser technique sensitivity. According
to the results of Weibull model analysis, an increased Weibull modulus represents that the
bonding strength and the reliability of plasma-sprayed HACs are further improved by the
hydrothermal crystallization.

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