2017
DOI: 10.1016/j.surfcoat.2017.07.071
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Control over fine scale terrace structures induced on polycrystalline Pd by simple heat treatments in air

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Cited by 5 publications
(3 citation statements)
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“…This steplike surface feature suggests that the increased potassium ratio induces a stronger crystallographic anisotropy of the surface energy and an enhanced grain coarsening process during annealing. These two effects have been reported as the driving forces of terrace formation on enlarged grains, which also have a tendency for low-surface-energy planes to be exposed preferentially …”
mentioning
confidence: 96%
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“…This steplike surface feature suggests that the increased potassium ratio induces a stronger crystallographic anisotropy of the surface energy and an enhanced grain coarsening process during annealing. These two effects have been reported as the driving forces of terrace formation on enlarged grains, which also have a tendency for low-surface-energy planes to be exposed preferentially …”
mentioning
confidence: 96%
“…These two effects have been reported as the driving forces of terrace formation on enlarged grains, which also have a tendency for low-surface-energy planes to be exposed preferentially. 16 To investigate how potassium influences the material phase formation and crystal structures, θ−2θ Cu Kα X-ray diffraction (XRD) is measured and analyzed as shown in Figure 1b−d. Two strongest characteristic 2θ peaks occur at around 15.03°a nd 30.30°with three low-intensity peaks at 21.35°, 23.89°, and 26.59°(marked with #), which are indexed as 101/020, 202/040, 121/200/002, 031/211/112, and 022/220, respectively, in a CsPbIBr 2 perovskite with an orthorhombic unit cell referenced to CsPbBr 3 (Figure S1) having the same orthorhombic structure.…”
mentioning
confidence: 99%
“…Second, heat treatment with succeeding cooling of Pd forms terrace arrangements and deep grooves or cracks at grain boundaries located on the surface of the Pd wires. [ 38 ] Similarly, Yule et al [ 39 ] performed flame annealing with subsequent quenching in deionized water. They identified the resulting distortions in the grain boundaries of the Pd structure as hot spots for hydrogen absorption through scanning electrochemical cell microscopy techniques.…”
Section: Resultsmentioning
confidence: 99%