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Can I read X-ray Determination of Crystalline Hydroxyapatite to Amorphous Calcium-phosphate Ratio in Plasma Sprayed Coatings on EtoBox?
X-ray Determination of Crystalline Hydroxyapatite to Amorphous Calcium-phosphate Ratio in Plasma Sprayed Coatings by Ludwig Keller; W. A. Dollase is a Medicine article available to read on EtoBox.
What is X-ray Determination of Crystalline Hydroxyapatite to Amorphous Calcium-phosphate Ratio in Plasma Sprayed Coatings about?
A method to measure the amorphous calcium phosphate (ACP) content of plasma sprayed hydroxyapatite (HA) coatings is presented. The areas of the crystalline peaks and the broad amorphous "hump" in an X-ray diffraction scan of a mixture of crystalline and amorphous HA can be fitted using conventional nonlinear least-squares methods. The weight fraction of the amorphous component in a mixture of unknown proportions is obtained from the measured hump fraction using a linear expression requiring a single calibration constant. This calibration constant may be determined by applying the same sample preparation, X-ray mea-surement, and least-squares fitting methods to a single standard of known (weighed) proportions as used to measure the unknown(s). Application of this method to a set of 12 samples yields an "index of crystallinity" for plasma sprayed HA coatings with an estimated standard deviation of 1 wt % ACP across the entire compositional range.
Who reads X-ray Determination of Crystalline Hydroxyapatite to Amorphous Calcium-phosphate Ratio in Plasma Sprayed Coatings?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Ludwig Keller; W. A. Dollase
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); Heterocorporation; Wiley (ISSN 0021-9304)
- Published
- 2000
- Language
- EN
- Field
- Medicine (Health Sciences)