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MEMOIRE MAGISTER THEME - Université Ferhat Abbas de Sétif

MEMOIRE MAGISTER THEME - Université Ferhat Abbas de Sétif

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Thèse : Étu<strong>de</strong> du renforcement du verre par le double échange ionique<br />

RESUME<br />

La rupture fragile du verre est due à la présence <strong>de</strong>s défauts à sa surface qui servent <strong>de</strong> point<br />

<strong>de</strong> concentration <strong>de</strong> contrainte.<br />

Un traitement thermochimique <strong>de</strong> type échange ionique, simple et double réalisés avec<br />

différents temps <strong>de</strong> maintient, pour améliorer le verre silico-sodo-calcique.les longueurs <strong>de</strong>s<br />

fissures diminuent si le temps du premier échange ionique est long. Le <strong>de</strong>uxième type<br />

d’échange assure la stabilisation <strong>de</strong> ces fissures en profon<strong>de</strong>ur.<br />

Une opération d’in<strong>de</strong>ntation instrumenté a été utilisée pour déterminer le profile <strong>de</strong><br />

contrainte induite par la trempe chimique<br />

Mot clé : fragilité, verre, contraintes, échange ionique, in<strong>de</strong>ntation instrumenté.<br />

Thesis: study of reinforcement of glass by the double ion-exchange<br />

SUMMARY<br />

Glass brittle fracture is due to the presence of the <strong>de</strong>fects on surface that act as point of<br />

stress concentration.<br />

Single and double thermochemical treatments of ion-exchanged were carried out with<br />

glass mechanical properties durations. the cracks lengths <strong>de</strong>crease with the single chemical<br />

treatment duration. The double treatment led to creaks stabilization in <strong>de</strong>pth.<br />

An instrumented in<strong>de</strong>ntation operation was used to <strong>de</strong>termine the engineered stress<br />

profile induced by chemical strengthening<br />

Key word: brittle, glass, stress, ion-exchanged, in<strong>de</strong>ntation instrumented.<br />

ﻒﻋﺎﻀﻤﻟا يدرﺎﺸﻟا لدﺎﺒﺘﻟا ﻖﻳﺮﻃ ﻦﻋ جﺎﺟﺰﻟا ﺔﻳﻮﻘﺗ ﺔﺳارد : ﺔﺣوﺮﻃأ<br />

: ﺺﺨﻠﻤﻟا<br />

. تادﺎﻬﺟﻹا ﺰآﺮﻣ ﺮﺒﺘﻌﺗ ﻲﺘﻟا و ﻪﺤﻄﺳ ﻰﻠﻋ ةدﻮﺟﻮﻤﻟا ﺔﻳﺮﻬﺠﻤﻟا تﺎﻘﻘﺸﺘﻟا ﻰﻟإ جﺎﺟﺰﻟا ﺔﺷﺎﺸه<br />

دﻮﻌﺗ<br />

ﺖﻗو نﺎآ اذإ ﺔﺻﺎﺧ , جﺎﺟﺰﻟا ﺔﻳﻮﻘﺗ ﻰﻟإ يدﺆﻳ ﻲﺋﺎﻨﺜﻟا و يدﺎﺣﻷا يدرﺎﺸﻟا لدﺎﺒﺘﻟا ﻖﻳﺮﻃ ﻦﻋ ﺔﺌﻳﺎﻴﻤآوراﺮﺤﻟا ﺔﺠﻟﺎﻌﻤﻟا نإ<br />

. لﻮﻃأ ﺔﺠﻟﺎﻌﻤﻟا<br />

.<br />

ﻲﻟﻵا<br />

ﺮﻘﻨﻟا ﻖﻳﺮﻃ ﻦﻋ ﺔﺠﻟﺎﻌﻤﻟا ﻦﻋ ﺔﺠﺗﺎﻨﻟا تادﺎﻬﺟﻹا ﺪﻳﺪﺤﺗ ﻢﺗ ﺪﻗ و

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