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Contribution A Letude Du Joint De Grains Dans Les Ceramiques Electriques
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Book Synopsis CONTRIBUTION A L'ETUDE DU JOINT DE GRAINS DANS LES CERAMIQUES ELECTRIQUES by : Olivier Dorlanne
Download or read book CONTRIBUTION A L'ETUDE DU JOINT DE GRAINS DANS LES CERAMIQUES ELECTRIQUES written by Olivier Dorlanne and published by . This book was released on 1986 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS UN PREMIER TEMPS NOUS RAPPELONS L'ETAT DE L'ART DES VARISTANCES A BASE D'OXYDE DE ZINC. NOUS EVOQUONS LES DIFFERENTS PROCEDES DE FABRICATION DE CES CERAMIQUES POLYCRISTALLINES, LEURS DOMAINES D'APPLICATION D'AUJOURD'HUI COMME CEUX DE DEMAIN ET LEURS CARACTERISTIQUES TANT PHYSICO-CHIMIQUES QU'ELECTRIQUES. DANS LE CADRE DE CE DERNIER POINT, NOUS EXAMINONS PLUS PARTICULIEREMENT, D'UNE PART, LE COMPORTEMENT DE CES COMPOSANTS LORSQU'ILS SONT SOUMIS A UNE PRESSION HYDROSTATIQUE ET, D'AUTRE PART, LA LUMIERE EMISE PAR LES ECHANTILLONS SOUS TENSION. ENSUITE, GRACE A UNE IMPORTANTE AUGMENTATION DE LA TAILLE DES GRAINS, NOUS ETUDIONS EXPERIMENTALEMENT PLUSIEURS JOINTS DE GRAINS, CHACUN PRIS ISOLEMENT, ANALYSONS STATISTIQUEMENT LES RESULTATS ET PRESENTONS UN MATERIAU, A L'ETAT DE PROTOTYPE, CARACTERISE PAR UNE EPAISSEUR MANIPULABLE ET UNE FAIBLE TENSION DE SEUIL. LA TROISIEME PARTIE EST CONSACREE AUX MECANISMES DE TRANSPORT A TRAVERS LE JOINT DE GRAINS. APRES UNE REVUE BIBLIOGRAPHIQUE, NOUS PROPOSONS UN MODELE DE CONDUCTION POUR UNE STRUCTURE INTERGRANULAIRE LORSQUE CELLE-CI EST SOUMISE A UNE TENSION CONTINUE NON-DESTRUCTIVE
Book Synopsis Information technology and electrotechnology for the Mediterranean countries by : Costas Stasopoulos
Download or read book Information technology and electrotechnology for the Mediterranean countries written by Costas Stasopoulos and published by . This book was released on 1998 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PROPRIETES ELECTRIQUES ET CRISTALLOCHIMIE DES JOINTS DE GRAINS DANS LES OXYDES CERAMIQUES by : MARIE HELENE.. BERGER-PINET
Download or read book PROPRIETES ELECTRIQUES ET CRISTALLOCHIMIE DES JOINTS DE GRAINS DANS LES OXYDES CERAMIQUES written by MARIE HELENE.. BERGER-PINET and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LA COMPREHENSION DU COMPORTEMENT ELECTRIQUE DES JOINTS DE GRAINS DANS LES OXYDES CERAMIQUES EST ESSENTIELLE POUR L'OPTIMISATION DE CES MATERIAUX. UN PROTOCOLE ORIGINAL DE CARACTERISATION CRISTALLOCHIMIQUE ET ELECTRIQUE DES JOINTS A ETE DEVELOPPE ET APPLIQUE SUR PLUSIEURS TYPES DE CERAMIQUES QUI ONT REVELE LA DIVERSITE DE LEURS JOINTS. DANS LE CAS DU TITANATE DE STRONTIUM, LE BISMUTH DIFFUSE A TRAVERS LES JOINTS GENERAUX EN EVITANT LES JOINTS DE COINCIDENCE ELEVEE PLUS DENSES ET PAUVRES EN TITANE. L'ETUDE DES FERRITES DE MNZN A CONFIRME LA PRESENCE DE CALCIUM AU JOINT ET A PRECISE QUE LA SEGREGATION S'OPERE PRINCIPALEMENT SUR LES JOINTS GENERAUX. NOUS AVONS APPORTE UNE PREUVE EXPERIMENTALE DE LA DIMINUTION DU RAPPORT FE#2#+/FE#3#+ AU JOINT, LIE A LA SEGREGATION DE CALCIUM. LES JOINTS SPECIAUX SE CARACTERISENT PAR DES BARRIERES ELECTRIQUES FAIBLES TANDIS QUE LES JOINTS GENERAUX CORRESPONDENT A DES BARRIERES ELEVEES. LES CONCEPTS DE PERCOLATION NOUS ONT REVELE QU'IL EST NECESSAIRE D'OBTENIR UN TAUX DE JOINTS SPECIAUX INFERIEUR A 12% POUR EVITER NON SEULEMENT LA FORMATION D'UN FILET CONTINU DE JOINTS BON CONDUCTEURS A TRAVERS L'ECHANTILLON, MAIS AUSSI LA CREATION D'AMAS FAVORABLES A LA CIRCULATION DES COURANTS DE FOUCAULT. DE MEME, DANS LES SUPRACONDUCTEURS, LES JOINTS GENERAUX CONSTITUENT DES BARRIERES RESISTIVES; SEULS CERTAINS JOINTS SPECIAUX SERONT FAVORABLES AU PASSAGE DU SUPERCOURANT. L'OPTIMISATION DES PROPRIETES ELECTRIQUES D'UNE CERAMIQUE PASSE PAR UNE CARACTERISATION CRISTALLOCHIMIQUE ET ELECTRIQUE DES DIFFERENTS TYPES DE JOINTS PUIS PAR UN CONTROLE DE LEUR DISTRIBUTION GRACE AU TAUX D'IMPURETES ET AUX CONDITIONS D'ELABORATION
Book Synopsis CONTRIBUTION A L'ETUDE DU JOINT CERAMIQUE-DENT by : JEAN-PIERRE.. BONNEVILLE
Download or read book CONTRIBUTION A L'ETUDE DU JOINT CERAMIQUE-DENT written by JEAN-PIERRE.. BONNEVILLE and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PROPRIETES ELECTRIQUES DU JOINT DE GRAINS DE LA CERAMIQUE A BASE D'OXYDE DE ZINC by : Ming Tao
Download or read book PROPRIETES ELECTRIQUES DU JOINT DE GRAINS DE LA CERAMIQUE A BASE D'OXYDE DE ZINC written by Ming Tao and published by . This book was released on 1987 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: A L'AIDE D'UNE METHODE ORIGINALE DE MICROSOUDURE PAR ULTRA-SONS, NOUS PLACONS UN FIL-ELECTRODE DE PART ET D'AUTRE D'UN JOINT DE GRAINS, PERMETTANT AINSI D'EFFECTUER TOUTES LES ETUDES EXPERIMENTALES DE CE DERNIER. EN SE BASANT SUR LES DIFFERENTES CARACTERISTIQUES I(V) MESUREES DE PLUSIEURS JOINTS, NOUS PROPOSONS 3 MODELES DE SIMULATION RELATIFS A LA CARACTERISTIQUE I(V) GLOBALE D'UNE VARISTANCE. LES CALCULS METTENT EN EVIDENCE L'INFLUENCE DU POURCENTAGE OPTIMAL DE "BONS JOINTS" SUR LES PROPRIETES ELECTRIQUES (COEFFICIENT DE NON-LINEARITE, COURANT DE FUITE, TENSION DE SEUIL, REGIME DE SATURATION) DES VARISTANCES ZNO A BASSE TENSION DE SEUIL. REALISATION ET CARACTERISATION DE VARISTANCES A GROS GRAINS (100 UM-200 UM) A PARTIR D'UNE TECHNIQUE DE GRAINS GERMES
Book Synopsis CONTRIBUTION EXPERIMENTALE A L'ETUDE DU JOINT CERAMIQUE-EMPRESS DENT by : PHILIPPE(1967-...). MOREAU
Download or read book CONTRIBUTION EXPERIMENTALE A L'ETUDE DU JOINT CERAMIQUE-EMPRESS DENT written by PHILIPPE(1967-...). MOREAU and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal de physique written by and published by . This book was released on 1999 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contribution à l'étude du comportement des matériaux céramiques en milieu sidérurgique by : Abdelkader Lai͏̈meche
Download or read book Contribution à l'étude du comportement des matériaux céramiques en milieu sidérurgique written by Abdelkader Lai͏̈meche and published by . This book was released on 1993 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE DE LA MOUILLABILITE DES DIFFERENTES NUANCES D'ACIER SUR LES CERAMIQUES NITRURES ET EN PARTICULIER SUR LE NITRURE D'ALUMINIUM, A MIS EN EVIDENCE L'EXISTENCE D'INTERACTIONS CHIMIQUES COMPLEXES AUX INTERFACES LIQUIDE-VAPEUR ET SOLIDE-LIQUIDE. L'INTERACTION A L'INTERFACE ALN-ACIER LIQUIDE FAIT APPEL, D'UNE PART A UN MECANISME DE DECOMPOSITION D'ALN AVEC OXYDATION DE L'ALUMINIUM, ET D'AUTRE PART A L'ATTAQUE DE LA PHASE ALON QUASI INEVITABLEMENT PRESENTE AUX JOINTS DE GRAINS D'ALN. NOUS AVONS ALORS CHERCHE A ELIMINER ALON DES JOINTS DE GRAINS EN AJOUTANT AVANT LE FRITTAGE, A LA POUDRE DE DEPART, UNE FAIBLE QUANTITE DE NITRURE DE BORE QUI PERMET D'EVITER LA FORMATION DES PHASES ALUMINATES OXYDEES ET EN PARTICULIER DES OXYNITRURES D'ALUMINIUM AUX JOINTS DE GRAINS LORS DU FRITTAGE. LE TAUX DE BN DOIT ETRE ADAPTE A LA STRICTE EPURATION DES JOINTS DE GRAINS, ET NOS MEILLEURS RESULTATS ONT ETE OBTENUS POUR LES TENEURS DE 10% EN POIDS. L'ETUDE DE LA CORROSION DES CERAMIQUES TESTEES PAR LA METHODE DU DOIGT PLONGEANT VIENT CONFIRMER LES RESULTATS DE LA MOUILLABILITE PUISQUE, DANS LE CAS OU L'INTERACTION SOLIDE-LIQUIDE EST FAIBLE (CAS DE L'ALUMINE), LA RESISTANCE A LA CORROSION EST BONNE. C'EST AUSSI CE QUI EST CONSTATE LORSQUE LES PRODUITS DE LA REACTION ACIER-CERAMIQUE OU LA DECOMPOSITION DU SUBSTRAT (CAS DU SIALON ) ABOUTISSENT A LA FORMATION D'UNE COUCHE D'ALUMINE A L'INTERFACE SOLIDE-LIQUIDE, QUI CONFERE AU MATERIAU UNE MEILLEURE RESISTANCE A LA CORROSION. L'ALUMINE N'EST PAS LE SEUL COMPOSE DONT IL FAUT RECHERCHER LA FORMATION IN SITU POUR AMELIORER LA RESISTANCE A LA CORROSION. LES ACIERS RICHES EN TITANE, COMME DANS LE CAS DU SIALON , FORMENT A L'INTERFACE UNE NOUVELLE PHASE QUI RESISTE PARTICULIEREMENT BIEN ET PROTEGE ALN CONTRE LA CORROSION
Download or read book L'Industrie Céramique written by and published by . This book was released on 1959 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bulletin de documentation, nos. 96-172, included in 1964-1970 volumes.
Book Synopsis Ségrégation interfaciale dans les solides by : D. Mazière
Download or read book Ségrégation interfaciale dans les solides written by D. Mazière and published by . This book was released on 1999 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Book Synopsis Springer Handbook of Glass by : J. David Musgraves
Download or read book Springer Handbook of Glass written by J. David Musgraves and published by Springer. This book was released on 2019-08-14 with total page 1590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides comprehensive treatment of the current state of glass science from the leading experts in the field. Opening with an enlightening contribution on the history of glass, the volume is then divided into eight parts. The first part covers fundamental properties, from the current understanding of the thermodynamics of the amorphous state, kinetics, and linear and nonlinear optical properties through colors, photosensitivity, and chemical durability. The second part provides dedicated chapters on each individual glass type, covering traditional systems like silicates and other oxide systems, as well as novel hybrid amorphous materials and spin glasses. The third part features detailed descriptions of modern characterization techniques for understanding this complex state of matter. The fourth part covers modeling, from first-principles calculations through molecular dynamics simulations, and statistical modeling. The fifth part presents a range of laboratory and industrial glass processing methods. The remaining parts cover a wide and representative range of applications areas from optics and photonics through environment, energy, architecture, and sensing. Written by the leading international experts in the field, the Springer Handbook of Glass represents an invaluable resource for graduate students through academic and industry researchers working in photonics, optoelectronics, materials science, energy, architecture, and more.
Book Synopsis Valley of the Queens Assessment Report by : Martha Demas
Download or read book Valley of the Queens Assessment Report written by Martha Demas and published by . This book was released on 2017-07-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Valley of the Queens Project is a collaboration of the Supreme Council of Antiquities and the Getty Conservation Institute from 2006-2011. The project involved comprehensive research, planning and assessment culminating in the development of detailed plans for conservation and management of the site. Volume 2 of the report is the condition summary of the 111 tombs from the 18th,19th, and 20th Dynasties in the Valley of the Queens. This includes a summary of tomb architectural development, the geological and hydrological context, wall painting technique and condition assessment of the paintings and structural stability of the tombs.
Book Synopsis Frontline and Factory by : Roy MacLeod
Download or read book Frontline and Factory written by Roy MacLeod and published by Springer Science & Business Media. This book was released on 2007-05-06 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a first considered attempt to study the factors that conditioned industrial chemistry for war in 1914-18. Taking a comparative perspective, it reflects on the experience of France, Germany, Austria, Russia, Britain, Italy and Russia, and points to significant similarities and differences. It looks at changing patterns in the organisation of industry, and at the emerging symbiosis between science, industry and the military.
Book Synopsis Soldering in Electronics Assembly by : MIKE JUDD
Download or read book Soldering in Electronics Assembly written by MIKE JUDD and published by Elsevier. This book was released on 1999-03-26 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Managers, engineers and technicians will use this book during industrial construction of electronics assemblies, whilst students can use the book to get a grasp of the variety of methods available, together with a discussion of technical concerns. It includes over 200 illustrations, including a photographic guide to defects, and contains many line drawings, tables and flow charts to illustrate the subject of electronics assembly. Soldering in Electronics Assembly looks theoretically at everything needed in a detailed study, but in a practical manner. It examines the soldering processes in the light of electronic assembly type; solder; flux; and cleaning requirements. It has information on every available process, from the most basic hand soldering through to latest innovatory ones such as inert atmosphere wave soldering and zoned forced convection infra-red machines. The book provides a detailed analysis of solder and soldering action; purpose of flux and relevant flux types for any application; classification of assembly variants; assessment and maintenance of solderability. There is also a detailed analysis of soldering process defects and causes. In addition, Soldering in Electronics Assembly contains a new chapter on Ball Grid Array (BGA) technology. A practical guide for the industry covering all the main soldering processes currently in use Cleaning, faults, troubleshooting and standards are all major topics Considers safety and solder process quality assessment
Book Synopsis Seeing the Unseen. Geophysics and Landscape Archaeology by : Stefano Campana
Download or read book Seeing the Unseen. Geophysics and Landscape Archaeology written by Stefano Campana and published by CRC Press. This book was released on 2008-10-01 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: SEEING THE UNSEEN. GEOPHYSICS AND LANDSCAPE ARCHAEOLOGY is a collection of papers presented at the advanced XV International Summer School in ArchaeologyGeophysics for Landscape Archaeology (Grosseto, Italy, 10-18 July 2006). Bringing together the experience of some of the worlds greatest experts in the field of archaeological prospection, the
Book Synopsis Climate in Museums by : Gael de Guichen
Download or read book Climate in Museums written by Gael de Guichen and published by . This book was released on 1980 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
