Sökning: "calcium aluminate"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden calcium aluminate.
1. Calcium-Aluminate as Biomaterial : Synthesis, Design and Evaluation
Sammanfattning : In this thesis different aspects of calcium-aluminate (CA) as biomaterial are presented. Calcium aluminate is a chemically bonded ceramic with inherent properties making it suitable for use as biomaterial in some applications. LÄS MER
2. Calcium aluminate cement as dental restorative : Mechanical properties and clinical durability
Sammanfattning : In 1995, the Swedish government recommended the discontinuation of amalgam as restorative in paediatric dentistry. Because the mercury content in amalgam constitutes an environmental hazard, its use has declined. LÄS MER
3. Calcium Aluminate based Cement as Dental Restorative Materials
Sammanfattning : This thesis presents the results from the development process of a ceramic dental filling material based on calcium aluminate cement. The main focus of the work concerns dimensional changes during setting, hardening and curing and the understanding of the factors controlling the dimensional stability of the system. LÄS MER
4. Parameters influencing inclusion compositions in Al-killed steel melts during a secondary refining process
Sammanfattning : This study was carried out to clarify the factors influencing the evolution of inclusions in Al-killed steel melts during a secondary refining process. First, a case-hardening steel was the subject of study to understand the factors influencing the inclusion compositions in the steel melt. LÄS MER
5. Phase development, heat of hydration and expansion in a blended cement with b-hemihydrate and anhydrite as calcium sulfate
Sammanfattning : Expansive cements are utilised in special applications to improve properties such as cracking caused by drying shrinkage. Several types of expansive cements exist and the main hydration product responsible for the expansion is ettringite, [Ca3Al(OH)6]2(SO4)3·26H 2O. LÄS MER