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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Cavitation erosion of WC-Co

Hankey, S E January 1987 (has links)
Bibliography: pages 68-70. / An investigation involving the vibratory cavitation erosion of WC-Co alloys was undertaken in order to determine the mechanisms of material removal. Nineteen grades of WC-Co alloys were studied. These alloys had been previously characterised according to microstructural and mechanical properties. Further characterisation by way of Young's modulus and density of the materials was undertaken. An investigation of the i nfluence of various parameters on cavitation erosion established a binder content dependence on erosion. For two grain sizes, erosion was found to increase to a maximum at 12 vo1-% binder content (1.8 μm grain size) and 23 vol-% binder (2.8 μm grain size). The main mode of material removal was found to be cobalt removal followed by WC grain pull-out. In high binder content alloys, cobalt removal was predominant with little loss of WC grains. X-ray diffraction showed that the allotropic phase transformation of the binder under cavitational attack was beneficial to the erosion resistance of these alloys. The erosion of low binder content alloys was controlled by the contiguity of the WC skeleton. Maximum erosion occurred at binder contents which corresponded to the combination of a fragile WC skeleton and a small volume of available cobalt for strain induced transformation.
22

Polarization of aluminum - cobalt alloys

Jahren, Randall Lee January 1983 (has links)
No description available.
23

The determination of thermodynamic properties by mass spectrometry in the Ni-Co, Co-Cr, Ni-Cr and Ni-Co-Cr systems /

McCormack, James Michael January 1971 (has links)
No description available.
24

Process development of cobalt base superalloys modified with hafnium and zirconium

Domalavage, Peter Kevin January 1980 (has links)
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE. / Vita. / Includes bibliographical references. / by Peter Kevin Domalavage. / Sc.D.
25

Growth, characterization, and properties of Co/Re superlattices

Charlton, Timothy R. January 2001 (has links)
Thesis (Ph. D.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains x, 73 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 69-72).
26

Thermoelectric power of Co-Zr and Fe-Zr amorphous alloys

From, Milton. January 1984 (has links)
No description available.
27

The electrodeposition of cobalt-tungsten and nickel-cobalt-tungsten alloys from acid plating baths

Hoglund, Paul Franklin, January 1945 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1945. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves 161-162.
28

De-wetting of cobalt thin films on sapphire

Espinosa, Jorge D. January 2007 (has links)
Thesis (Ph. D.)--West Virginia University, 2007. / Title from document title page. Document formatted into pages; contains ix, 106 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 102-105).
29

Transformacoes de fase e propriedades da liga FECO-2V

COUTO, ANTONIO A. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:36:29Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:59:26Z (GMT). No. of bitstreams: 1 03869.pdf: 1530426 bytes, checksum: 572e7a2dbb3cf5d7e1b444b448a01e81 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energetica e Nucleares IPEN/CNEN-SP
30

Estudo do processo de preparacao e caracterizacao de ligas magneticas de samario-cobalto obtidas por reducao-difusao calciotermica

TAKIISHI, HIDETOSHI 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:37:17Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:09:08Z (GMT). No. of bitstreams: 1 02043.pdf: 5558929 bytes, checksum: ab3263582fdb04b85c3f8792873017c1 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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