Consolidation of Molybdenum nanopowders by spark plasma sintering: Densification mechanism and first mirror application
Abstract
Mo nanopowders are synthesized by ball milling and the following hydrogen reduction of MoO3 powders. The densification mechanism of Mo nanopowders during spark plasma sintering (SPS) is analyzed by the combination of the regression of the experimental data on regular SPS and on the SPS multistep pressure dilatometry based on the continuum theory of the sintering. The Mo mirror with 400 nm average grain size and 93% relative density is fabricated by the SPS. The performance of the mirrors made from a single crystal Mo and from the hydrogen-reduced sintered Mo nanopowder is discussed. The microstructure and optical properties of the mirrors are characterized before and after plasma exposure, and no substantial degradation of the reflectivity was observed.
- Authors:
-
[3];
- San Diego State Univ., CA (United States). Mechanical Engineering; Univ. of California, San Diego, CA (United States). Mechanical and Aerospace Engineering
- San Diego State Univ., CA (United States). Mechanical Engineering
- Univ. of California, San Diego, CA (United States). Mechanical and Aerospace Engineering
- Univ. of California, San Diego, CA (United States). Center for Energy Research
- General Atomics, San Diego, CA (United States)
- San Diego State Univ., CA (United States). Mechanical Engineering; Univ. of California, San Diego, CA (United States). NanoEngineering
- Publication Date:
- Research Org.:
- San Diego State Univ., CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1611084
- Alternate Identifier(s):
- OSTI ID: 1547844
- Grant/Contract Number:
- SC0008581
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Nuclear Materials
- Additional Journal Information:
- Journal Volume: 516; Journal ID: ISSN 0022-3115
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; molybdenum; densification mechanism; diagnostic mirrors; ITER; reflectivity
Citation Formats
Lee, Geuntak, Manière, Charles, McKittrick, Joanna, Doerner, Russell, Nishijima, Daisuke, Gattuso, Anthony, Abrams, Tyler, Thomas, Dan, Back, Christina, and Olevsky, Eugene A. Consolidation of Molybdenum nanopowders by spark plasma sintering: Densification mechanism and first mirror application. United States: N. p., 2019.
Web. doi:10.1016/j.jnucmat.2019.01.028.
Lee, Geuntak, Manière, Charles, McKittrick, Joanna, Doerner, Russell, Nishijima, Daisuke, Gattuso, Anthony, Abrams, Tyler, Thomas, Dan, Back, Christina, & Olevsky, Eugene A. Consolidation of Molybdenum nanopowders by spark plasma sintering: Densification mechanism and first mirror application. United States. https://doi.org/10.1016/j.jnucmat.2019.01.028
Lee, Geuntak, Manière, Charles, McKittrick, Joanna, Doerner, Russell, Nishijima, Daisuke, Gattuso, Anthony, Abrams, Tyler, Thomas, Dan, Back, Christina, and Olevsky, Eugene A. Sat .
"Consolidation of Molybdenum nanopowders by spark plasma sintering: Densification mechanism and first mirror application". United States. https://doi.org/10.1016/j.jnucmat.2019.01.028. https://www.osti.gov/servlets/purl/1611084.
@article{osti_1611084,
title = {Consolidation of Molybdenum nanopowders by spark plasma sintering: Densification mechanism and first mirror application},
author = {Lee, Geuntak and Manière, Charles and McKittrick, Joanna and Doerner, Russell and Nishijima, Daisuke and Gattuso, Anthony and Abrams, Tyler and Thomas, Dan and Back, Christina and Olevsky, Eugene A.},
abstractNote = {Mo nanopowders are synthesized by ball milling and the following hydrogen reduction of MoO3 powders. The densification mechanism of Mo nanopowders during spark plasma sintering (SPS) is analyzed by the combination of the regression of the experimental data on regular SPS and on the SPS multistep pressure dilatometry based on the continuum theory of the sintering. The Mo mirror with 400 nm average grain size and 93% relative density is fabricated by the SPS. The performance of the mirrors made from a single crystal Mo and from the hydrogen-reduced sintered Mo nanopowder is discussed. The microstructure and optical properties of the mirrors are characterized before and after plasma exposure, and no substantial degradation of the reflectivity was observed.},
doi = {10.1016/j.jnucmat.2019.01.028},
journal = {Journal of Nuclear Materials},
number = ,
volume = 516,
place = {United States},
year = {Sat Jan 19 00:00:00 EST 2019},
month = {Sat Jan 19 00:00:00 EST 2019}
}
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