Standard x-ray diffraction powder patterns

Swanson, H E; McMurdie, H F; Morris, M C; Evans, E H

doi:10.6028/nbs.mono.25-8

Cited by 52 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The XRD powder patterns of virgin LSO and annealed LSO are shown in figure 2(a). By comparison with the International Center for Diffraction Data (ICDD) Powder Diffraction File PDF-4 library using JADE software, it was determined that virgin LSO was composed of three phases, including LSO (main phase, The Joint Committee on Powder Diffraction Standards (JCPDS) card No.37-1472, contributors: Tranqui et al [17]), Li 2 SiO 3 (secondary phase, JCPDS card No.29-0828, contributors: Morris et al [18]), and Li 2 CO 3 (third phase, JCPDS card No.37-1472, contributors: Swanson et al [19]). LSO is very sensitive to CO 2 and has a high CO 2 absorption capacity.…”

Section: Characterization Of Lso Pebblesmentioning

confidence: 99%

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li₄SiO₄ pebbles

Wang

et al. 2023

Nucl. Fusion

View full text Add to dashboard Cite

Lithium-based ceramic breeder Li4SiO4 will suffer long-term high temperature during operation. That may lead to changes to its microstructure, chemical phase, composition elements, and further impacts its mechanical performance and hydrogen isotope release behavior. In the present work, long-term annealing at 900 ℃ in He incl. 0.1 vol% H2 flow atmosphere for designated times was conducted. Li4SiO4 pebbles with poor or excellent mechanical performance (abbr. “poor pebbles” and “excellent pebbles”) have porous or dense microstructure, respectively. Coarsening process that grains and pores get larger as a function of annealing time was observed for Li4SiO4 poor pebbles. Li4SiO4 excellent pebbles can maintain its microstructure stability, and only slight grain growth was observed after 1000 h of annealing. Oxygen and lithium element loss was demonstrated over annealing time. Compression tests and Weibull analysis indicate that the distinct degradation of mechanical performance of Li4SiO4 pebbles mainly occur in the initial 100 h of annealing, and then the degradation process slows down. Thermal desorption spectroscopy reveals that 1000 h of annealing caused the disappearance of high temperature release peak (665 oC) and the shift of low temperature release peaks (around 300 oC) to lower temperature. The former is mainly attributed to decomposition of carbon impurities (Li2CO3) and the latter is attributed to carbon impurities and the transition from closed to open pores.

show abstract

Section: Characterization Of Lso Pebblesmentioning

confidence: 99%

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li₄SiO₄ pebbles

Wang

et al. 2023

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

“…ExperimentaL -The specimen used in the present experiment was of cylindrical form, about 0.13 mm in diameter and 1.5 mm in length, with the axis parallel to the [001]. The lattice constants were determined by using high-angle reflections on oscillation and Weissenberg photographs : a = 6.103, b = 6.103 and c = 8.660 A, which are slightly different from those given by Swanson, McMurdie, Morris and Evans [6]. Although the values of a and b coincide within experimental error, the intensities of crystallographically related reflections on Weissenberg photographs clearly show a two-fold symmetry, instead of a four-fold one, about the [001].…”

mentioning

confidence: 99%

The crystal structure of KCdF3

Hidaka

Hosogi

1982

J. Phys. France

View full text Add to dashboard Cite

The crystal structure of KCdF3 is determined in the third, orthorhombic phase and refined by using a full matrix least-squares method by taking domain structures into consideration. Refinement is performed with superlattice-X, M and R point reflection intensity data collected on the multiple-film Weissenberg photographs taken with filtered MoKα radiation. Pbnm-D16 2h (z = 4) is assigned to the space group of KCdF3. The R value reaches 8 % for the intensity data of the X and M point reflections. When the R point reflections are included in the calculation, the R value is 9.8 %. The structure is well described by the successive condensations of M3 and Z5 (Rx25 + Ry 25-like) soft-phonon modes

show abstract

a566, I.1.3 Complex fluorides and fluorine double salts

Pies¹,

Weiß²

Key Elements: F, Cl, Br, I

View full text Add to dashboard Cite

Standard x-ray diffraction powder patterns

Cited by 52 publications

References 4 publications

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li₄SiO₄ pebbles

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li₄SiO₄ pebbles

The crystal structure of KCdF3

a566, I.1.3 Complex fluorides and fluorine double salts

Contact Info

Product

Resources

About

Standard x-ray diffraction powder patterns

Cited by 52 publications

References 4 publications

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li4SiO4 pebbles

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li4SiO4 pebbles

The crystal structure of KCdF3

a566, I.1.3 Complex fluorides and fluorine double salts

Contact Info

Product

Resources

About

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li₄SiO₄ pebbles

Effects of long-term annealing-induced microstructure evolution on mechanical performance and deuterium release behavior of Li₄SiO₄ pebbles