An integrated high temperature environmental cell for atom probe tomography studies of gas-surface reactions: instrumentation and results.
An integrated environmental cell has been designed and developed for the latest generation of Atom Probe Tomography LEAP™ instruments, allowing controlled exposure of samples to gases at high temperatures. Following treatment, samples can be transferred through the LEAP vacuum system for subsequent APT analysis, which provides detailed information on changes to chemical microstructures following the reactions with near-atomic resolution. A full description of the cell is presented, along with some sample results on the oxidation of aluminum and two platinum-group alloys, demonstrating the capability of combining exposure/characterization functionality in a single instrument.
Iowa State University, Department of Materials Science and Engineering, Ames, IA 50011, United States.
S
S
Dumpala
Iowa State University, Department of Materials Science and Engineering, Ames, IA 50011, United States.
S R
SR
Broderick
University of Oxford, Department of Materials, Parks Road, Oxford OX1 3PH, United Kingdom.
P A J
PA
Bagot
Iowa State University, Department of Materials Science and Engineering, Ames, IA 50011, United States. Electronic address: krajan@iastate.edu.
K
K
Rajan
Atom Probe Tomography (APT); Catalysis; Gas–solid reactions; In-situ experimentation