| Autor: |
Vance, Eric R., Ball, Clifford J., Begg, Bruce D., Carter, Melody L., Day, R. Arthur, Thorogood, Gordon J. |
| Předmět: |
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| Zdroj: |
Journal of the American Ceramic Society; Jul2003, Vol. 86 Issue 7, p1223, 3p |
| Abstrakt: |
Trivalent Pu can be incorporated in the silicate apatite structure to form Ca[sub 2]Pu[sub 8](SiO[sub 4])[sub 6]O[sub 2] by sintering under reducing conditions, while the incorporation of tetravalent Pu in the Ca/rare earth sites in oxidizing or neutral conditions is limited to only 0.6 formula units (f.u.). The d-spacings and intensities of the X-ray pattern of hexagonally structured Ca[sub 2]Pus(SiO[sub 4])[sub 6]O[sub 2] after firing at 1250°C are given, and the a and c lattice parameters are 0.9561[sub 1] and 0.7028[sub 1] nm, respectively. The respective solid solubility limits of U and Hf in Ca[sub 2]Gd[sub 8-x](U/Hf)[sub x](SiO[sub 4])[sub 6]O[sub 2] apatite samples were 0.3 and 0.2 f.u. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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