Characterization of the Defense Waste Processing Facility (DWPF) Environmental Assessment (EA) glass standard reference material. [Site Characterization]

Jantzen, Carol M.; Bibler, N.E.; Beam, D.C.

doi:10.2172/6876372

Cited by 18 publications

(1 citation statement)

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“…In general, the hydrothermal stability is carried out by leaching test, such as Materials Characterization Center, ASTM and Product Consistency Test (PCT) methods. 27–30 In this paper, the hydrothermal stability of the powder sample was determined by modified PCT method at 90°C in deionised water (pH 7) for a series of test durations 0–1, 1–3, 3–7, 7–10, 10–14, 14–21, 21–28, 28–35 and 35–42 days.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and hydrothermal stability of U doped zirconolite–sphene composite materials

Teng

Wang

et al. 2014

Advances in Applied Ceramics

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Two series of U doped zirconolite-sphene composite materials were prepared by solid state reaction method: CaZr (12m) U m Ti 2 O 7 2(12m) Ca (12x) U x Al 2x Ti (122x) SiO 5 (m57x) and Ca (12n) U 6n Zr (125n) Al 2n Ti (222n) O 7 2(125n) Ca (12y) U y Al 2y Ti (122y) SiO 5 (n55y/6). The effects of U content on the phase structure of the composite materials were mainly investigated. The results show that the optimal synthesis temperature of the composite material is ,1230uC. In comparison with the incorporation of U in the Zr site of zirconolite, U incorporation in the Ca site of zirconolite using Al as charge compensating ions was not very efficient. Hydrothermal stability of the U doped zirconolite-sphene composite material was examined by modified product consistency test method at 90uC in deionised water (pH 7). The normalised U leach rate is fairly constant in a low value below 10 25 g m 22 day 21 after 28 days.

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Section: Introductionmentioning

confidence: 99%