Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
—
New NZP-type solid solutions, Na
1+2
x
Zr
2–
x
Ni
x
(PO
4
)
3
and Ca
0.5+
x
Zr
2–
x
Ni
x
(PO
4
)
3
with
x
= 0.10, 0.25, and 0.50, have been prepared by solid-state reactions. The synthesized samples have been characterized by X-ray diffraction and IR spectroscopy. Crystal structure of the compound CaZr
1.5
Ni
0.5
(PO
4
)
3
has been refined by full-profile X-ray diffraction analysis method, reliability factors is
R
p
= 4.78% and
R
wp
= 6.45%, respectively. Thermal expansion of the phosphates has been studied by high-temperature X-ray diffraction in the temperature range 25–700°C. The synthesized compounds have been shown to be intermediate- and low-thermal-expansion materials. Using SPS method we have produced ceramic samples with a high relative density (ρ
rel
> 97%), based on phosphate powders. Strength characteristics (microhardness and fracture toughness) of the ceramics have been determined.