ProgramMaster Logo
Conference Tools for MS&T21: Materials Science & Technology
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting MS&T21: Materials Science & Technology
Symposium Journal of the American Ceramic Society Awards Symposium
Presentation Title Effect of Moisture on the Oxidation Behaviour of ZrB2.
Author(s) Ravisankar Naraparaju
On-Site Speaker (Planned) Ravisankar Naraparaju
Abstract Scope Oxidation studies of ZrB2 were performed under wet air and dry air conditions at 1200, 1400 and 1500C for 1, 4 and 10h. Compared to dry air, the presence of water vapor was found to enhance the oxidation kinetics by a factor of 7 to 30, depending on the temperature. Thermodynamic calculations suggested that water vapor promoted the formation of additional volatile species such as boric acid (HBO2), in addition to boria (B2O3) produced in dry air, which increased the evaporation rate of B2O3. Compared to dry air, the presence of water vapor leads to more rapid evaporation of boria and the transition from parabolic oxidation kinetic behavior (i.e., rate controlled by diffusion through boria) to linear (i.e., underlying ZrB2 is directly exposed to the oxidizing environment) at shorter times and lower temperatures.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Strategy to Strengthen Alumina-carbon Refractories for Flow Control of Molten Steel
A Thermodynamics-guided Framework to Design Spherical Lightweight Aggregate from Waste Coal Combustion Ash
Direct Ink Writing (DIW) of Hierarchical Porous Alumina Stabilized Emulsions: Rheology and Printability
Domain Walls in Ferroelectrics
Effect of Moisture on the Oxidation Behaviour of ZrB2.
In-Situ Resistance Degradation & Switching of Bulk YSZ & STO Single Crystals
Processing of MAX Phases: From Synthesis to Applications
Relaxor Characteristics and Electromechanical Response under High Field for Sodium BismuthTtitanate-based Ceramics

Questions about ProgramMaster? Contact programming@programmaster.org