Keywords and Phrases
Metal Matrix Nanocomposites; Nanoparticle-enabled Diffusion Control; Nanoparticle Strengthened Interfaces
"Nanoparticle-enabled diffusion control has been shown to rapidly refine multiphase microstructures during slowly cooled casting. This thesis characterizes the diffusion and the mechanical properties of nanoparticle-enabled diffusion controlled materials. To characterize diffusion properties, in situ characterization is performed to verify the nanoparticle enabled diffusion control mechanism. Materials with nanoparticles were observed to decrease the diffusion coefficient by at least one order of magnitude under similar melting conditions as compared to materials without nanoparticles. To understand mechanical properties, the nanoparticles that assembled at the growing interface were characterized under mechanical tensile stress. Nanoparticle-enabled interfaces were observed to improve the interface bond between dissimilar materials, providing a method for improving the interface strength without altering the original material system. Based on these findings, nanoparticle-enabled diffusion control is shown to be a viable method for improving microstructural design and mechanical properties of multiphase materials"--Abstract, page iv.
Liou, Frank W.
Mechanical and Aerospace Engineering
M.S. in Mechanical Engineering
National Science Foundation (U.S.)
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- In-situ observation of nanoparticle-enabled diffusion control by high-speed synchrotron x-ray imaging
- Interfacial strengthening of nanoparticle-enabled interfaces
ix, 33 pages
© 2017 Joseph Louis Volpe, All rights reserved.
Thesis - Open Access
Electronic OCLC #
Volpe, Joseph Louis, "Diffusion and mechanical characterization of nanoparticle-enabled diffusion controlled materials" (2017). Masters Theses. 7727.