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Auteur S. Hamamda |
Documents disponibles écrits par cet auteur (5)
Affiner la recherche Interroger des sources externesContribution à l'étude des céramiques réfractaires du système silice alumine physico-chimie des transformations de phases cas des matières premières locales / Ali Bouyoucef
Titre : Contribution à l'étude des céramiques réfractaires du système silice alumine physico-chimie des transformations de phases cas des matières premières locales Type de document : texte imprimé Auteurs : Ali Bouyoucef ; Univ. de Constantine, Éditeur scientifique ; S. Hamamda, Directeur de thèse Année de publication : 2003 Importance : 212 p. Note générale : 01 Disponible à la salle de recherche
02 Disponibles au magasin de la bibliothèque centraleLangues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : diffraction des rayons X Kaolin Cristobalite Mullite Transformatios de phase Dilatation thermique Index. décimale : 530 Physique Permalink : index.php?lvl=notice_display&id=3130 Contribution à l'étude des céramiques réfractaires du système silice alumine physico-chimie des transformations de phases cas des matières premières locales [texte imprimé] / Ali Bouyoucef ; Univ. de Constantine, Éditeur scientifique ; S. Hamamda, Directeur de thèse . - 2003 . - 212 p.
01 Disponible à la salle de recherche
02 Disponibles au magasin de la bibliothèque centrale
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : diffraction des rayons X Kaolin Cristobalite Mullite Transformatios de phase Dilatation thermique Index. décimale : 530 Physique Permalink : index.php?lvl=notice_display&id=3130 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/3988 BOU/3988 Thèse Bibliothèque principale Thèses Disponible
Titre : Dilatométrie de T?les à base d'aluminium Type de document : texte imprimé Auteurs : Soror Saadallah ; Univ. de Constantine, Éditeur scientifique ; S. Hamamda, Directeur de thèse Année de publication : 2008 Importance : 77 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Anisotropie Transformation de phase Al-Mg-Si Dilatométrie thermique Index. décimale : 530 Physique En ligne : ../theses/physique/SAA5166.pdf Permalink : index.php?lvl=notice_display&id=3479 Dilatométrie de T?les à base d'aluminium [texte imprimé] / Soror Saadallah ; Univ. de Constantine, Éditeur scientifique ; S. Hamamda, Directeur de thèse . - 2008 . - 77 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Anisotropie Transformation de phase Al-Mg-Si Dilatométrie thermique Index. décimale : 530 Physique En ligne : ../theses/physique/SAA5166.pdf Permalink : index.php?lvl=notice_display&id=3479 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SAA/5166 SAA/5166 Thèse Bibliothèque principale Thèses Disponible 
Titre : Etude et caracterisation de la liaison ceramique-metal sur des alliages base Co-Cr(+W) Type de document : texte imprimé Auteurs : Ahcène Karaali ; Univ. de Constantine, Éditeur scientifique ; S. Hamamda, Directeur de thèse Année de publication : 2005 Importance : 90 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale 01 CD Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Oxydation Co-Cr-W Alliages dentaires Enérgie d'activation Phase cfc Oxyde spinelle Constantes de vitesse parabolique Index. décimale : 530 Physique Diplôme : Doctorat En ligne : ../theses/physique/KAR4325.pdf Permalink : index.php?lvl=notice_display&id=3610 Etude et caracterisation de la liaison ceramique-metal sur des alliages base Co-Cr(+W) [texte imprimé] / Ahcène Karaali ; Univ. de Constantine, Éditeur scientifique ; S. Hamamda, Directeur de thèse . - 2005 . - 90 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la bibliothèque centrale 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Oxydation Co-Cr-W Alliages dentaires Enérgie d'activation Phase cfc Oxyde spinelle Constantes de vitesse parabolique Index. décimale : 530 Physique Diplôme : Doctorat En ligne : ../theses/physique/KAR4325.pdf Permalink : index.php?lvl=notice_display&id=3610 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KAR/4325 KAR/4325 Thèse Bibliothèque principale Thèses Disponible
Titre : Etudes microstructurales et propriétés thermodynamiques de quelques Kaolins locaux et d’un nanocomposites. Type de document : texte imprimé Auteurs : Abdelghani Lakel, Auteur ; S. Hamamda, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 105 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Diffraction, Kaolin DD1, Kaolin KT2, Kaolinite, Halloysite, Taille des grains, Microcontraintes, Méthode L.W.L, Méthode de Williamson Hall, Méthode de Warren Averbach, Distribution des tailles. DSC, Graphite thermiquement dilaté, Nanotube, Transition, Vitesse de Chauffage, dispersion.
Bowder diffraction, DD1 Kaolin, KT2 Kaolin, Kaolinite and Halloysite, Crystallites size, Micro constraints, LWL method, Williamson-Hall and Warren & Averbach methods, Distribution of sizes, DSC, expanded Graphite, Nanotube, Transition, Heating rate, Dispersion.
حيود المساحيق، الكاولن DD1والكاولنTK2،الكاولينيت، الهالوسيت،تحديد حجم الحبيبات،التشوه،طريقة وران و أفرباك، طريقةLWL، طريقة ويليامصون وهول ،توزيع حجم الحبيبات، تصحيح لورنتز،الطور الرئيسي، المسعار الحراري الماسح، الغرافيت الممدد حراريا ،الأنابيب من رتبة النانومتر، التحول، التشتت ،سرعة التسخينIndex. décimale : 530 Physique Résumé : "In this work, we have studied two kaolins taken from distend places. The first one denoted DD1 consists of two main phases (kaolinite and halloysite) and the other KT2 whose main constituents are kaolinite, quartz and mica. We have studied, by differential scanning calorimetry, four samples based on fluoroplastic containing different concentrations of thermally expanded graphite (GTD) for various dispersions.
Our choice was set on the component Kaolinite which is present in both materials. Lorentz-Polarization correction was carried out prior to the diffraction data, which has been achieved using LWL program. The true profile was extracted using this program. The methods used for the microstructural analysis of the constituents in the two kaolins are the Warren-Averbach and the Williamson-Hall methods. Scherrer's relationship has been applied in cases where the compound is devoid of strains. The study revealed that the Kaolinite of DD1 is devoid of micro constraints, while Kaolinite of KT2 incorporates the strains. This was confirmed by the Williamson-Hall method as well as Fourier analysis. The evaluation of strains in the kaolinite of KT2 has been performed by the methods of Warren-Averbach and the Williamson-Hall diagram. The average value of this constraint found by the first method is about 0.22, whereas as the second method gives as a value of 0.28. The average size of crystallites of the Kaolinite in DD1 was found be about 111Å obtained by the method of Warren-Averbach and 118 Å obtained by the method of Williamson-Hall, while, the size of crystallites in KT2 was 92 Å and 127 Å using the two methods respectively. The study of the size distribution showed that the dominant size of kaolinite in DD1 and KT2 is about 40 Å (41%) and 43 Å (42%), respectively.
The purpose of this work is the study, by differential scanning calorimetry, four samples based on fluoroplastic containing different concentrations of thermally expanded graphite (GTD) for various dispersions. We noticed that the heating rate present an important role. Increasing the heating rate from 5 to 10 and then to 15 °C/min, affords the behavior of our calorimetry nanocomposite whose the concentration and/or the dispersion. All curves contain a calorimetric anomaly the shape and intensity depend on the concentration and dispersion. The temperature of the calorimetric anomaly varies from a sample to another. We have shown that the nanomaterial containing the smallest concentration of GTD with high dispersion heated with the biggest heating rate will degrade at high temperatures. It is more resistant to thermal shocks. The introduction of GTD in a polymer matrix improved the thermal properties of the nanocomposite and its use becomes possible in a wide range of temperature."
Diplôme : Doctorat en sciences En ligne : ../theses/physique/LAK6559.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9674 Etudes microstructurales et propriétés thermodynamiques de quelques Kaolins locaux et d’un nanocomposites. [texte imprimé] / Abdelghani Lakel, Auteur ; S. Hamamda, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2014 . - 105 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Diffraction, Kaolin DD1, Kaolin KT2, Kaolinite, Halloysite, Taille des grains, Microcontraintes, Méthode L.W.L, Méthode de Williamson Hall, Méthode de Warren Averbach, Distribution des tailles. DSC, Graphite thermiquement dilaté, Nanotube, Transition, Vitesse de Chauffage, dispersion.
Bowder diffraction, DD1 Kaolin, KT2 Kaolin, Kaolinite and Halloysite, Crystallites size, Micro constraints, LWL method, Williamson-Hall and Warren & Averbach methods, Distribution of sizes, DSC, expanded Graphite, Nanotube, Transition, Heating rate, Dispersion.
حيود المساحيق، الكاولن DD1والكاولنTK2،الكاولينيت، الهالوسيت،تحديد حجم الحبيبات،التشوه،طريقة وران و أفرباك، طريقةLWL، طريقة ويليامصون وهول ،توزيع حجم الحبيبات، تصحيح لورنتز،الطور الرئيسي، المسعار الحراري الماسح، الغرافيت الممدد حراريا ،الأنابيب من رتبة النانومتر، التحول، التشتت ،سرعة التسخينIndex. décimale : 530 Physique Résumé : "In this work, we have studied two kaolins taken from distend places. The first one denoted DD1 consists of two main phases (kaolinite and halloysite) and the other KT2 whose main constituents are kaolinite, quartz and mica. We have studied, by differential scanning calorimetry, four samples based on fluoroplastic containing different concentrations of thermally expanded graphite (GTD) for various dispersions.
Our choice was set on the component Kaolinite which is present in both materials. Lorentz-Polarization correction was carried out prior to the diffraction data, which has been achieved using LWL program. The true profile was extracted using this program. The methods used for the microstructural analysis of the constituents in the two kaolins are the Warren-Averbach and the Williamson-Hall methods. Scherrer's relationship has been applied in cases where the compound is devoid of strains. The study revealed that the Kaolinite of DD1 is devoid of micro constraints, while Kaolinite of KT2 incorporates the strains. This was confirmed by the Williamson-Hall method as well as Fourier analysis. The evaluation of strains in the kaolinite of KT2 has been performed by the methods of Warren-Averbach and the Williamson-Hall diagram. The average value of this constraint found by the first method is about 0.22, whereas as the second method gives as a value of 0.28. The average size of crystallites of the Kaolinite in DD1 was found be about 111Å obtained by the method of Warren-Averbach and 118 Å obtained by the method of Williamson-Hall, while, the size of crystallites in KT2 was 92 Å and 127 Å using the two methods respectively. The study of the size distribution showed that the dominant size of kaolinite in DD1 and KT2 is about 40 Å (41%) and 43 Å (42%), respectively.
The purpose of this work is the study, by differential scanning calorimetry, four samples based on fluoroplastic containing different concentrations of thermally expanded graphite (GTD) for various dispersions. We noticed that the heating rate present an important role. Increasing the heating rate from 5 to 10 and then to 15 °C/min, affords the behavior of our calorimetry nanocomposite whose the concentration and/or the dispersion. All curves contain a calorimetric anomaly the shape and intensity depend on the concentration and dispersion. The temperature of the calorimetric anomaly varies from a sample to another. We have shown that the nanomaterial containing the smallest concentration of GTD with high dispersion heated with the biggest heating rate will degrade at high temperatures. It is more resistant to thermal shocks. The introduction of GTD in a polymer matrix improved the thermal properties of the nanocomposite and its use becomes possible in a wide range of temperature."
Diplôme : Doctorat en sciences En ligne : ../theses/physique/LAK6559.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9674 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité LAK/6559 LAK/6559 Thèse Bibliothèque principale Thèses Disponible
Titre : Etudes thermodynamiques et structurales du nanocomposite polyethylene contenant des nanotubes de carbone multiparois. Type de document : texte imprimé Auteurs : Yassine Naoui, Auteur ; S. Hamamda, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2015 Importance : 120 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : "polymère, polyéthylène, nanotube, carbone, dilatation, Anisotropie, Raman, DSC,
TG, FTIR."
"polymer, polyethylene, nanotube, carbon, multiwalled, expansion, Raman, DSC, TGA,
FTIR."
بوليمر-بوليثليلين-نانوتيب-كربون-مركب نانومتري-تمدد+رامان-السعة الحرارية التفاليةة-تحليل تارموغرافيمتري-اشعة ماتحت الحمراءIndex. décimale : 530 Physique Résumé : The results obtained show that the coefficient of thermal expansion of the nanocomposite
PE+X%CNT is changed between the radial direction and the longitudinal one, whatever the
concentration of carbon nanotubes.
According to the radial direction, is higher than the coefficients in the whole of the
of temperature domain. According to the longitudinal direction, the dilatometric behaviour of the
nanocomposite changes completely. Pure polyethylene presents a thermal expansion coefficient
very large in comparison to that of the three others. The four curves contain each one a dilatometric
anomaly. Its intensity depends on the concentration.
We notice that the thermal expansion coefficient as well as the intensity of the dilatometric anomaly
of the nanocomposite EP+1%CNT is the weakest one in front of the three others whatever the
direction of measurement.
The curves of differential scanning calorimetry of the four samples have the same form and the
shapes are practically confused. They contain each one a calorimetric anomaly appearing at 95°C.
Thermogravimetric measurements of the two nanomaterials containing respectively 1 and 2.5%
NTC give curves which overlap and have intensities appreciably the same ones. As for the sample
containing 0.5% NTC, its TG is very intense in front of the two other nanocomposites and that of
pure material on all the studied temperature range.
The Raman spectroscopy, of the studied samples, reveal that the intensities of the various peaks
present on the four curves strongly vary according to the concentration in nanotubes. The curves of
the pure sample and the nanocomposite EP+0.5%CNT are superposable. As for the spectra of two
other nanomatérials containers 1 and 2.5%CNT, they have the same form and are superposable.
The two spectra contain the same number of anomalies and appear at the same frequencies. The
Raman intensity of the nanomaterial PE2.5%CNT is lower than the three others.
The spectra obtained by the infrared illustrate an important intensification due to the introduction
of the carbon nanotubes into polyethylene. The shapes of the curves of the three nanocomposites,
whatever the concentration in multiwalled carbon nanotubes, changed form and became more
intense in comparison to that of pure polyethylene. That of nanomaterial PE+1%NTC have the
greatest intensity.
The use of several experimental techniques for the realization of this work made it possible to
highlight and to confirm the positive role of the carbon nanotubes introduced into polyethylene.
The results obtained in this thesis are of an unquestionable contribution in the field of sciences of
materials. Dilatometry enabled us to show that the nanocomposite containing 1%NTC has a low
thermal dilation coefficient according to the temperature. This behaviour makes it interesting in the
industrial field. The mechanical tests confirmed that the injection of carbon multiparois nanotubes
in polyethylene made increase the elastic range. The Raman spectroscopy showed that the increase
in the concentration in carbon multiparois nanotubes in polyethylene high density PEHD makes
decrease the quantity of defects, improves qualities of the nanocomposite, reinforces the C-C bonds
and led to an ordered structure.
Diplôme : Magistère En ligne : ../theses/physique/NAO6791.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10016 Etudes thermodynamiques et structurales du nanocomposite polyethylene contenant des nanotubes de carbone multiparois. [texte imprimé] / Yassine Naoui, Auteur ; S. Hamamda, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2015 . - 120 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : "polymère, polyéthylène, nanotube, carbone, dilatation, Anisotropie, Raman, DSC,
TG, FTIR."
"polymer, polyethylene, nanotube, carbon, multiwalled, expansion, Raman, DSC, TGA,
FTIR."
بوليمر-بوليثليلين-نانوتيب-كربون-مركب نانومتري-تمدد+رامان-السعة الحرارية التفاليةة-تحليل تارموغرافيمتري-اشعة ماتحت الحمراءIndex. décimale : 530 Physique Résumé : The results obtained show that the coefficient of thermal expansion of the nanocomposite
PE+X%CNT is changed between the radial direction and the longitudinal one, whatever the
concentration of carbon nanotubes.
According to the radial direction, is higher than the coefficients in the whole of the
of temperature domain. According to the longitudinal direction, the dilatometric behaviour of the
nanocomposite changes completely. Pure polyethylene presents a thermal expansion coefficient
very large in comparison to that of the three others. The four curves contain each one a dilatometric
anomaly. Its intensity depends on the concentration.
We notice that the thermal expansion coefficient as well as the intensity of the dilatometric anomaly
of the nanocomposite EP+1%CNT is the weakest one in front of the three others whatever the
direction of measurement.
The curves of differential scanning calorimetry of the four samples have the same form and the
shapes are practically confused. They contain each one a calorimetric anomaly appearing at 95°C.
Thermogravimetric measurements of the two nanomaterials containing respectively 1 and 2.5%
NTC give curves which overlap and have intensities appreciably the same ones. As for the sample
containing 0.5% NTC, its TG is very intense in front of the two other nanocomposites and that of
pure material on all the studied temperature range.
The Raman spectroscopy, of the studied samples, reveal that the intensities of the various peaks
present on the four curves strongly vary according to the concentration in nanotubes. The curves of
the pure sample and the nanocomposite EP+0.5%CNT are superposable. As for the spectra of two
other nanomatérials containers 1 and 2.5%CNT, they have the same form and are superposable.
The two spectra contain the same number of anomalies and appear at the same frequencies. The
Raman intensity of the nanomaterial PE2.5%CNT is lower than the three others.
The spectra obtained by the infrared illustrate an important intensification due to the introduction
of the carbon nanotubes into polyethylene. The shapes of the curves of the three nanocomposites,
whatever the concentration in multiwalled carbon nanotubes, changed form and became more
intense in comparison to that of pure polyethylene. That of nanomaterial PE+1%NTC have the
greatest intensity.
The use of several experimental techniques for the realization of this work made it possible to
highlight and to confirm the positive role of the carbon nanotubes introduced into polyethylene.
The results obtained in this thesis are of an unquestionable contribution in the field of sciences of
materials. Dilatometry enabled us to show that the nanocomposite containing 1%NTC has a low
thermal dilation coefficient according to the temperature. This behaviour makes it interesting in the
industrial field. The mechanical tests confirmed that the injection of carbon multiparois nanotubes
in polyethylene made increase the elastic range. The Raman spectroscopy showed that the increase
in the concentration in carbon multiparois nanotubes in polyethylene high density PEHD makes
decrease the quantity of defects, improves qualities of the nanocomposite, reinforces the C-C bonds
and led to an ordered structure.
Diplôme : Magistère En ligne : ../theses/physique/NAO6791.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10016 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité NAO/6791 NAO/6791 Thèse Bibliothèque principale Thèses Disponible
