Studies of post-production ageing effects in atomised aluminium powder
文献信息
The evolution of hydrogen gas from the reaction between a series of atomised aluminium powder samples and 2.5 M HCl was monitored over time. The pattern of hydrogen evolution in each case was similar in that after an initial period of slow gas production there was a rapid increase followed by slow gas production again. These studies also showed differences in the time taken to reach maximum hydrogen evolution for similarly aged powders. Lower purity aluminium powder (99.7 vs. 99.93%) or samples with a higher proportion of smaller particles reached the maximum rate of hydrogen evolution more quickly. Changes in the time taken to reach maximum gas evolution were also noted for all the powders as they aged; the time to reach a maximum generally increasing with time after atomisation. However, for each powder a short regression occurred between ca. 21 and 35 d. This suggests that changes continue to take place in the surface layer of the aluminium particulates long after atomisation has taken place.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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