{"id":{"repo_id":"nps","oai_identifier":"oai:calhoun.nps.edu:10945/6772"},"canonical_url":"https://search.dev.ndltd.org/etd/nps/oai:calhoun.nps.edu:10945/6772","repository":{"repo_id":"nps","name":"Naval Postgraduate School","base_url":"https://calhoun.nps.edu/server/oai/request"},"display":{"title":"Synthesis and Characterization of Aluminum-Carbon Nanotube Composite by Cryogenic Milling","abstract":"Cryogenic milling was studied for the ex situ strengthening of aluminum (Al) with carbon nanotubes (CNT). Characterization of mechanically alloyed Al-CNT powders was conducted in preparation for bulk powder processing to be used in cold spray. Al-CNT metal matrix composite powders with 5 wt.% and 10 wt.% CNT were synthesized by cryogenic milling of the blended component powders. Stearic acid was used as a process control agent to minimize agglomeration of the powders upon milling. CNT reinforcement of the Al powder was successfully obtained while maintain CNT structure after milling the powders for periods ranging between six and 90 minutes using a SPEX 6870 Freezer/Mill. Composition and properties of the Al-CNT composite was studied using X-ray diffraction, optical microscopy, nanoindentation, scanning electron microscopy (SEM), Raman spectroscopy, and laser diffraction particle size analysis.","abstract_html":"Cryogenic milling was studied for the ex situ strengthening of aluminum (Al) with carbon nanotubes (CNT). Characterization of mechanically alloyed Al-CNT powders was conducted in preparation for bulk powder processing to be used in cold spray. Al-CNT metal matrix composite powders with 5 wt.% and 10 wt.% CNT were synthesized by cryogenic milling of the blended component powders. Stearic acid was used as a process control agent to minimize agglomeration of the powders upon milling. CNT reinforcement of the Al powder was successfully obtained while maintain CNT structure after milling the powders for periods ranging between six and 90 minutes using a SPEX 6870 Freezer/Mill. Composition and properties of the Al-CNT composite was studied using X-ray diffraction, optical microscopy, nanoindentation, scanning electron microscopy (SEM), Raman spectroscopy, and laser diffraction particle size analysis.","abstract_has_math":false,"creators":["Bottolfson, Brent A."],"institution":"Monterey, CA; Naval Postgraduate School","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Mechanical and Aerospace Engineering (MAE)","school":null,"contributors":[],"advisors":["Osswald, Sebastian","Brewer, Luke"],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-03","date_published":"2012-03","updated_at":"2026-07-27T20:25:42Z","subjects":[],"languages":[],"rights":["This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10945/6772","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Osswald, Sebastian","Brewer, Luke"]},{"key":"dc:contributor.department","label":"Department","values":["Mechanical and Aerospace Engineering (MAE)"]},{"key":"dc:creator","label":"Author","values":["Bottolfson, Brent A."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2012-05-14T18:55:35Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2012-05-14T18:55:35Z"]},{"key":"dc:date.issued","label":"Date","values":["2012-03"]},{"key":"dc:publisher","label":"Institution","values":["Monterey, CA; Naval Postgraduate School"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. 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CNT reinforcement of the Al powder was successfully obtained while maintain CNT structure after milling the powders for periods ranging between six and 90 minutes using a SPEX 6870 Freezer/Mill. Composition and properties of the Al-CNT composite was studied using X-ray diffraction, optical microscopy, nanoindentation, scanning electron microscopy (SEM), Raman spectroscopy, and laser diffraction particle size analysis."]},{"key":"dc:title","label":"Title","values":["Synthesis and Characterization of Aluminum-Carbon Nanotube Composite by Cryogenic Milling"]}]}],"canonical_facts":{"dc:contributor.advisor":["Osswald, Sebastian","Brewer, Luke"],"dc:contributor.department":["Mechanical and Aerospace Engineering (MAE)"],"dc:creator":["Bottolfson, Brent A."],"dc:date.accessioned":["2012-05-14T18:55:35Z"],"dc:date.available":["2012-05-14T18:55:35Z"],"dc:date.issued":["2012-03"],"dc:description.abstract":["Cryogenic milling was studied for the ex situ strengthening of aluminum (Al) with carbon nanotubes (CNT). Characterization of mechanically alloyed Al-CNT powders was conducted in preparation for bulk powder processing to be used in cold spray. Al-CNT metal matrix composite powders with 5 wt.% and 10 wt.% CNT were synthesized by cryogenic milling of the blended component powders. Stearic acid was used as a process control agent to minimize agglomeration of the powders upon milling. CNT reinforcement of the Al powder was successfully obtained while maintain CNT structure after milling the powders for periods ranging between six and 90 minutes using a SPEX 6870 Freezer/Mill. Composition and properties of the Al-CNT composite was studied using X-ray diffraction, optical microscopy, nanoindentation, scanning electron microscopy (SEM), Raman spectroscopy, and laser diffraction particle size analysis."],"dc:identifier.uri":["https://hdl.handle.net/10945/6772"],"dc:publisher":["Monterey, CA; Naval Postgraduate School"],"dc:rights":["This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States."],"dc:title":["Synthesis and Characterization of Aluminum-Carbon Nanotube Composite by Cryogenic Milling"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T20:25:42Z"}