Global ETD Search

81	The magnetic susceptibility of dilute copper-iron alloys at low temperature. / Copper-iron alloys at low temperatures. Raudorf, Thomas Walter. January 1967 (has links) No description available. Copper alloys -- Magnetic properties. Iron alloys -- Magnetic properties. Materials at low temperatures.
82	The behaviour of Fe and Co in a Cr based SDW host / Wilford, Donald Francis. January 1981 (has links) I have measured the magnetic and transport properties of Fe and Co in the variable SDW host, CrMo. Analyzing the behaviour of the Neel temperature shows that Co interacts with the SDW, almost an order of magnitude more strongly than does Fe. Also that it magnetically polarizes the SDW more strongly than Fe. Resistivity measurements show that Co reduces the nesting area of the Fermi surface while Fe increases it. Overall, the Neel temperature is strongly reduced by Fe and much less reduced by Co. / Magnetic susceptibility measurements show that Fe supports an effective magnetic moment below T(,N) while Co does not. However, as suggested by Friedel, only nearest neighbour Fe pairs contribute to the effective Fe moment, while isolated Fe moments, like Co, are locked into the SDW antiferromagnetism. / In the absence of SDW formation, the strong interaction between Co and the CrMo host leads to a Kondo state, while the smaller interaction with Fe allows the onset of spin glass ordering. Cobalt -- Magnetic properties. Ferromagnetism. Spin waves. Electron transport.
83	Estudo do processo de obtencao da liga magnetica NDsub(15) FEsub(77) Bsub(8) por reducao-difusao (R/D) calciotermica GUILHERME, ENEIDA da G. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:36:53Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:02Z (GMT). No. of bitstreams: 1 04373.pdf: 5945321 bytes, checksum: 2ab6ce764052bcd601cde1fffb3f7feb (MD5) / Disserta‡ao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP neodymium alloys reduction diffusion iron alloys reduction diffusion boron alloys reduction diffusion
84	Influencia do teor de cromo e de tratamentos termicos na microestrutura e no comportamento mecanico de ligas intermetalicas ordenadas a base de Fesub3 Al COUTO, ANTONIO A. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:43:09Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:23Z (GMT). No. of bitstreams: 1 06209.pdf: 16796127 bytes, checksum: ee7da755adc485834808ec1efbe10133 (MD5) / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP alloys intermetallic compounds iron alloys aluminium alloys chromium addition microstructure heat treatments mechanical properties
85	Estudo da influência da temperatura nas propriedades magnéticas e na microestrutura nos imãs permanentes à base de Pr-Fe-B-Nb-Co obtidos com hidrogênio SILVA, SUELANNY C. da 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:53:51Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:58:57Z (GMT). No. of bitstreams: 0 / Dissertação (Mestrado) / IPEN/D / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP PERMANENT MAGNETS HDDR PROCESS PRASEODYMIUM ALLOYS IRON ALLOYS BORON ALLOYS HYDROGENATION HEAT TREATMENTS
86	Estudo da influencia do campo magnetico na resistencia a corrosao em imas permanentes de Nd=Fe-B OLIVEIRA, MARA C.L. de 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:49:34Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:22Z (GMT). No. of bitstreams: 1 09675.pdf: 5315534 bytes, checksum: 8697e231fcc0636d3cbf06b636bc5b95 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP Permanent magnets neodymium alloys iron alloys boron alloys magnetic fields corrosion resistance corrosion magnetization
87	Estudo e caracterizacao das ligas FeNi e NiCr(80-20) por cento em peso, durante e apos irradiacao neutronica pelo metodo de resistividade OTERO, MAURO P. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:29:05Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:02:17Z (GMT). No. of bitstreams: 1 01057.pdf: 4184431 bytes, checksum: 2caaae91c80ebe87973209e0f0f2ba56 (MD5) / Dissertacao (Mestrado) / IEA/D / Instituto de Energia Atomica - IEA alloys iron alloys chromium alloys chromium alloys electric conductivity nickel alloys nickel alloys radiation effects
88	Estudo microestrutural e propriedades magnéticas em imãs permanentes sinterizados à base de PrFeCoBNb com adições de elementos de liga / Microstructural study and magnetic properties of PrPeCoBNb-based permanent sintered magnets with alloy additions MENDES NETO, TEOFILO 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:33:37Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:05:41Z (GMT). No. of bitstreams: 0 / Tese (Doutoramento) / IPEN/T / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP PERMANENT MAGNETS SINTERING PRASEODYMIUM ALLOYS IRON ALLOYS BORON ALLOYS NEODYMIUN ALLOYS MICROSTRUCTURE MAGNETIC PROPERTIES
89	Efeito de tratamentos termicos e da adicao de cromo nas propriedades mecanicas de ligas Fe-24 atAl PAOLA, JEAN C.C. de 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:42:50Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:07:27Z (GMT). No. of bitstreams: 1 06112.pdf: 5630844 bytes, checksum: d96c90e096947d42a20110e42e3cc1e8 (MD5) / Dissertacao(Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP alloys iron alloys aluminium alloys heat treatments chromium additions microhardness mechanical properties transmission electron microscopy
90	Avaliacao do efeito de tratamentos superficiais na resistencia a corrosao de magnetos de Nd-Fe-B / Assessment of the effect of surface treatments on the corrosion resistance of Nd-Fe-B Magnets MARTINS, EMERSON A. 09 October 2014 (has links) Made available in DSpace on 2014-10-09T12:26:32Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:09:42Z (GMT). No. of bitstreams: 0 / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP PERMANENT MAGNETS NEODYMIUM ALLOYS IRON ALLOYS BORON ALLOYS CORROSION PROTECTION ELECTRIC IMPEDANCE SPECTROSCOPY PHOSPHATES

Search results