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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.
1

Thermodynamic and electrochemical studies in molten chloroaluminate systems of relevance to advanced secondary battery applications

MacMillan, Malcolm Gordon January 1995 (has links)
No description available.
2

Diffusion of Pb210 and Cl36 in the Molten PbCl2-NaCl System

Wimberley, Jerry Wayne 08 1900 (has links)
Since 1955 research has been conducted at North Texas State College on diffusion in molten salts. The object of this work was a continuation of the diffusion studies, specifically the diffusion of Pb210 and Cl36 in molten PbCl2-NaCl mixtures.
3

The progresson from ionic to covalent bonding in disordered systems as studied by using neutron diffraction

Wasse, Jonathan Carl January 1998 (has links)
No description available.
4

Contributions to the theory of a class of ionic liquids

Tasseven, Cetin January 1996 (has links)
No description available.
5

Implantacao da tecnica potenciometrica para medidas in situ da solubilidade de oxidos em meio de sais fundidos .Eletrodos indicados de zirconia estabilizada

FELIX, GISELE R. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:40:58Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:39Z (GMT). No. of bitstreams: 1 03973.pdf: 4389182 bytes, checksum: b10987cb9b3ec2a2bd2d1083fded1bfc (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
6

Desenvolvimento de processo de eletrolise em meio de sais fundidos para a producao de metais de terras-raras leves. A obtencao do cerio metalico

RESTIVO, THOMAZ A.G. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:37:56Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:07:08Z (GMT). No. of bitstreams: 1 05577.pdf: 3375518 bytes, checksum: f5e0026ea00ed8ff355e62f2b792cf9c (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
7

Implantacao da tecnica potenciometrica para medidas in situ da solubilidade de oxidos em meio de sais fundidos .Eletrodos indicados de zirconia estabilizada

FELIX, GISELE R. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:40:58Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T13:56:39Z (GMT). No. of bitstreams: 1 03973.pdf: 4389182 bytes, checksum: b10987cb9b3ec2a2bd2d1083fded1bfc (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
8

Desenvolvimento de processo de eletrolise em meio de sais fundidos para a producao de metais de terras-raras leves. A obtencao do cerio metalico

RESTIVO, THOMAZ A.G. 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:37:56Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:07:08Z (GMT). No. of bitstreams: 1 05577.pdf: 3375518 bytes, checksum: f5e0026ea00ed8ff355e62f2b792cf9c (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
9

Defect Measurement In Metal Oxides After Corrosion

Jeanis, Ian Lander 03 September 2021 (has links)
No description available.
10

Etude de la corrosion à haute température d'alliages réfractaires en présence de sels alcalins lors de la conversion thermochimique de la biomasse / Study of the high temperature corrosion of refractory steels by alkaline salts during the thermochemical conversion of the biomass.

Couture, Ludovic 25 October 2011 (has links)
Les carburants BtL (Biomass to Liquid) font partie des carburants alternatifs au pétrole dits de seconde génération car synthétisés à partir de biomasse solide (contenant de la lignocellulose). Le procédé de fabrication de tels carburants par voie thermochimique repose sur deux étapes successives : la gazéification de la biomasse suivie par un procédé de Fisher-Tropsch. Certains éléments contenus dans la biomasse comme les sels alcalins peuvent se retrouver après l’étape de gazéification et être à l’origine d’attaques sous forme de sels fondus et ainsi endommager les infrastructures. Le travail réalisé dans ce manuscrit consiste à simuler la corrosion de parois d’échangeur thermique en présence de sulfate et chlorure de sodium sous atmosphère de gazéification (CO/H2/CO2) très faiblement oxydante (~ 10−18 bar). Afin de comparer les résultats à ceux issus de la bibliographie, les essais ont également été conduits sous atmosphère fortement oxydante (Ar/O2). Les essais réalisés sur alliage chrominoformeur, HR-120 (38Ni-34Fe-25Cr) à une température de 900°C en présence de sulfate de sodium en milieu faiblement oxydant ont mise en évidence une corrosion de type catastrophique localisée et réversible de l’alliage. Le comportement de l’alliage aluminoformeur, 214 (76Ni-16Cr-4Al) apparaît plus protecteur dans des conditions similaires. En présence de chlorure de sodium, les deux alliages se comportent d’une manière totalement identique : corrosion catastrophique en milieu fortement oxydant et impact du sel négligeable sous atmosphère faiblement oxydante. Un chapitre remède prometteur a été développé en fin de manuscrit. / BTL (biomass to liquid) is an innovative process to synthesize second generation bio-gasoline from wood and farm residues. This process includes a gasification step in order to generate the synthetic gas (syngas) which is subsequently transformed into gas oil by the Fisher Tropsch process. Alkaline salts (mainly potassium and sodium sulphates and chlorides) are present in the biomass and can induce detrimental high temperature corrosion of the refractory alloys where they can condensate as a liquid phase. In this work, we simulate high temperature corrosion of heat exchanger tubes in presence of sulphate and sodium chloride under gasification environment (CO/H2/CO2), consider as weakly oxidizing (~ 10−18 bar). To compare the results with those from the literature, tests were also conducted under highly oxidizing atmosphere (Ar/O2). Results with the chromia-forming alloy HR-120 (38Ni-34Fe-25Cr) at 900°C with sodium sulfate under low oxygen partial pressure shows reversible localized catastrophic oxidation. The behavior of the alumina-forming alloy 214 (76Ni-16Cr-4Al) appears more protective under similar conditions. In presence of sodium chloride, the behavior of the two alloys is identical. Indeed, with oxidizing atmosphere corrosion became totally catastrophic while the impact of sodium chloride was insignificant under gasification atmosphere.

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