Abstract
A study of the interfacial reactions taking place at a zircon-calcium aluminate cement (CA-cement) interface as a function of temperature is presented. The microstructures and morphologies of the interfaces are explained considering the information supplied by the corresponding quaternary phase diagram (ZrO2-Al2O3-SiO2-CaO). The microstructure of the interfacial layers varies strongly with temperature. After 2 h at 1550°C a network of columnar alumina crystals of about 60 μm in length and ≈8 μm in diameter, together with ≈30 μm length a CA6 needle-like crystals are embedded in an anorthite rich matrix. At 1600°C only a glassy phase with alumina crystals is observed at the interface. For the sample treated at 1550°C, cracks are deflected at the interface due to the presence of alumina crystals, whereas at 1600°C the cracks propagate through the interface without any deflection.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
