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Contents
Dr A BOETTCHER Deutschland | 3 |
Elektronenmikroskopische Untersuchungen an Glanzmetallen | 9 |
Contribution à létude de la synthèse de la mullite | 19 |
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alumina amounts sedimented argiles auch ball clay Bild body bricks brique brûleurs centrifugal Ceram ceramic céramique chamotte composition cristaux cristobalite cuisson cuite curves density diagramme dicalcium différents échantillons faïence feldspath felspar ferric oxide ferrous oxide fired firing first found four freezing frittage frost furnace give glaçure glass glaze granulométrie hardness heat treatment heated heating high increase kalsilite kaolin kaolinite laboratory length made magnetite material measure ment method mixture mullite muscovite number obtained oxydes oxygen particles pâte penetrometer phase porcelaine porosité pressure produits properties pyroxene quartz Quartzite radius reaction réfractaire refractories resistance results retrait same sample séchage séchoir section sedimentation shown in figure shows silica silica brick silicate sillimanite SiO2 small solid solution speeds of rotation spinel steel strength surface suspensions température tensions test tile time tion traitement thermique tube type used variations viscosity water X-ray Zett zone