Shape Memory Behaviors in Porous Zirconia-Based Systems
Student: Laura Quinn
Shape memory materials have been used in applications ranging from mechanical actuators to medical devices. By taking advantage of a diffusionless martensitic transformation between phases, these materials can either exhibit shape memory or superelastic effects. While these behaviors have most often been exploited in alloys, the martensitic transformation is also seen in zirconia-based ceramic systems. Read More...
Student: Laura Quinn
Shape memory materials have been used in applications ranging from mechanical actuators to medical devices. By taking advantage of a diffusionless martensitic transformation between phases, these materials can either exhibit shape memory or superelastic effects. While these behaviors have most often been exploited in alloys, the martensitic transformation is also seen in zirconia-based ceramic systems. Read More...
Fracture Mechanics of Brittle Materials Studied Using Synchrotron X-ray Radiation
Student: Sara Gorske
Fracture is a critical mode of failure in many materials, especially in brittle ceramics which undergo little plastic deformation. Most studies of fracture in the past have relied on ex-situ methods to assess fracture surfaces after a failure event, and while this mode of analysis has yielded key discoveries on the nature of cracks, research studying cracks in the interior of brittle materials as they are forming and growing has yet to be conducted in depth. Read More...
Student: Sara Gorske
Fracture is a critical mode of failure in many materials, especially in brittle ceramics which undergo little plastic deformation. Most studies of fracture in the past have relied on ex-situ methods to assess fracture surfaces after a failure event, and while this mode of analysis has yielded key discoveries on the nature of cracks, research studying cracks in the interior of brittle materials as they are forming and growing has yet to be conducted in depth. Read More...
Novel Additive Manufacturing of Ceramic Components via Reaction Bonding
Student: Zachary Ahmad
Laser-powder bed fusion (L-PBF) is an additive manufacturing technique that enables the creation of dense, net-shape or near-net shape structures. However, applying L-PBF to high-temperature materials presents challenges such as thermal shock, weak densification, and limited light absorbance. To address these issues, a collaboration between the Faber Group and NASA's Jet Propulsion Laboratory (JPL) has developed a new method that combines L-PBF with reaction bonding. Read More...
Student: Zachary Ahmad
Laser-powder bed fusion (L-PBF) is an additive manufacturing technique that enables the creation of dense, net-shape or near-net shape structures. However, applying L-PBF to high-temperature materials presents challenges such as thermal shock, weak densification, and limited light absorbance. To address these issues, a collaboration between the Faber Group and NASA's Jet Propulsion Laboratory (JPL) has developed a new method that combines L-PBF with reaction bonding. Read More...
Oxidation of Rare-Earth Silicate Multilayer EBCs
Student: Benjamin Herren
Due to their high melting temperature, low density, and good thermomechanical stability silicon-based ceramics (SiC, Si3N4) are one of the most promising materials systems for high temperature structural applications in gas turbine engines. However, their passivating SiO2 surface layer reacts with water vapor contained in combustion environments. Read More...
Student: Benjamin Herren
Due to their high melting temperature, low density, and good thermomechanical stability silicon-based ceramics (SiC, Si3N4) are one of the most promising materials systems for high temperature structural applications in gas turbine engines. However, their passivating SiO2 surface layer reacts with water vapor contained in combustion environments. Read More...
Multi-functional Ceramic Composites of Boron Nitride
Student: Celia Chari
Hall-effect thrusters used in electric propulsion systems have historically required a dielectric such as hexagonal boron nitride (h-BN) that has good thermal emissivity, is chemically inert and is resistant to thermal shock. However, the brittle nature of bulk BN poses challenges under dynamic loads, such as the launch environment, where the stiff material is subject to vibration and strain that can lead to catastrophic failures. Read More...
Student: Celia Chari
Hall-effect thrusters used in electric propulsion systems have historically required a dielectric such as hexagonal boron nitride (h-BN) that has good thermal emissivity, is chemically inert and is resistant to thermal shock. However, the brittle nature of bulk BN poses challenges under dynamic loads, such as the launch environment, where the stiff material is subject to vibration and strain that can lead to catastrophic failures. Read More...
Reverse Engineering Lusterware Porcelain
Student: Celia Chari
Meissen porcelain was Europe’s first successful replication of Chinese porcelain with decorative over-glaze enamels, invented by Johann Böttger in the early 18th century. A full pallet of colors was desired to replicate Chinese ceramics during the Böttger period of the Meissen factory’s production. While this goal was not realized for years to come, rare “mother of pearl” and lustrous purple glazes were produced by applying gold nanoparticles to the top glaze. Read More...
Student: Celia Chari
Meissen porcelain was Europe’s first successful replication of Chinese porcelain with decorative over-glaze enamels, invented by Johann Böttger in the early 18th century. A full pallet of colors was desired to replicate Chinese ceramics during the Böttger period of the Meissen factory’s production. While this goal was not realized for years to come, rare “mother of pearl” and lustrous purple glazes were produced by applying gold nanoparticles to the top glaze. Read More...
Tape/Freeze Casting to Fabricate High Uptake Sodium-Ion Battery Separators with Directional Pores
Student: Vince Wu
This study assesses the feasibility of tape/freeze casting, a combination of tape casting and freeze casting, in fabricating battery separators for sodium-ion batteries. Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is chosen as the separator material due to its chemical inertness in battery environments... Read More...
Student: Vince Wu
This study assesses the feasibility of tape/freeze casting, a combination of tape casting and freeze casting, in fabricating battery separators for sodium-ion batteries. Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is chosen as the separator material due to its chemical inertness in battery environments... Read More...