Chuan Hu, Yuewen Lu, Qian Yu, Ji-min Han, Wenchao Tong, Dongxu Zhang, Qianyou Wang* and Li Yang*,
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Mechanism of Chemically Induced Structural Evolution of Lead Azide under Hygrothermal Condition
Aging behavior of pyrotechnic agents is a serious threat to the reliability of the practical application of pyrotechnic products, while multiple environmental factors make it challenging to characterize the aging mechanism of pyrotechnic agents. This paper explored the aging process of LA in four hygrothermal environments with morphology and structure analysis techniques. LA aging underwent three stages: rapid surface reaction with H2O and CO2, interior hydrolysis by H2O, and CO2 reaction with lead oxides. The cavity structures formed during LA’s structural evolution reduced its energy density, causing increased energy dissipation under mechanical stimuli and preventing ignition. Further, reactions formed by inert lead compounds resisted electrostatic ignition, leading to agent failure. This comprehensive study provided a solid foundation for understanding the aging behavior of LA in multistress environments, offering valuable insights into its safe storage and handling.
期刊介绍：
Langmuir is an interdisciplinary journal publishing articles in the following subject categories:
Colloids: surfactants and self-assembly, dispersions, emulsions, foams
Interfaces: adsorption, reactions, films, forces
Biological Interfaces: biocolloids, biomolecular and biomimetic materials
Materials: nano- and mesostructured materials, polymers, gels, liquid crystals
Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry
Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals
However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do?
Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*.
This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).
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