Aluminum hydroxide, bayerite, boehmite, and gibbsite ToF-SIMS spectra in the positive ion mode. II

Journal Article · Mon Sep 12 00:00:00 EDT 2022 · Surface Science Spectra

DOI:https://doi.org/10.1116/6.0001936· OSTI ID:1887680

Strange, Lyndi ^[1]; Zhang, Yuchen ^[1]; Son, Jiyoung ^[1]; Gao, Jun ^[1]; Joshi, Vineet ^[1]; Yu, Xiao-Ying ^[2]

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1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We report time-of-flight secondary ion mass spectrometry (ToF-SIMS) was performed for boehmite (AOH-60) and its potential products of oxidation including pseudo-boehmite (AOH-180), α- and γ-Al₂O₃, and α- and γ-Al(OH)₃. Since boehmite often forms on the cladding materials to prevent corrosion, surface analysis techniques are performed to determine the amount of oxidation present. This ToF-SIMS spectral library is of significance because it includes boehmite and its potential oxidation products (i.e., aluminum oxide and hydroxide), which can be used to compare to spectra obtained for real-world samples containing boehmite. Furthermore, ToF-SIMS is often used as a complementary technique to x-ray photoelectron spectroscopy (XPS) due to its surface sensitivity and ability to compare spectra via multivariate analysis, therefore establishing the molecular signatures of boehmite and relevant compounds are essential for peak identification. The SIMS spectra shown are acquired from commercially available powders, which were deposited onto a Si wafer substrate via liquid slurry drop casting. This library of SIMS mass spectra will serve as a comparison of boehmite [γ-AlO(OH)], pseudo-boehmite [AlOOH∙nH₂O], α- and γ-Al₂O₃ aluminum oxide, and α- and γ-Al₂O₃ aluminum hydroxide in the positive ion mode, which compliments those reported in the negative ion mode (Part 1).

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC05-00OR22725; AC05-76RL01830
• OSTI ID: 1887680
• Journal Information: Surface Science Spectra, Journal Name: Surface Science Spectra Journal Issue: 2 Vol. 29; ISSN 1055-5269
• Publisher: American Vacuum Society - AIP
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
aluminum hydroxide
aluminum oxide
aluminum oxyhydroxide
boehmite
time-of-flight secondary ion mass spectrometry