Flash Sintering of Yttria Stabilized Zirconia: New Paradigm
Abstract
Flash Sintering is a recently discovered technique that has repeatedly been shown to dramatically lower sintering temperatures in experiments involved with the ceramic Yttria Stabilized Zirconia (YSZ) by applying a DC electric field to the body during the sintering cycle. Data acquired from these experiments have shown a relation between the applied electric field and temperature, which cause densification to occur at lower temperatures and quicker times. Experiments conducted by Raj and others replicate flash sintering to understand how different electric fields and temperatures relate to each other by monitoring the shrinkage and densification of YSZ during flash sintering. Future implementation suggests a great tool for ceramic manufacturing.
Key Words: flash, sintering, electric field, densification, incubation time, YSZ, ceramic, manufacturing, experiment
1.0 BACKGROUND
Diego Solorzano
Flash Sintering of Yttria Stabilized Zirconia: The Beginning of a New Paradigm
2.0 BACKGROUND
Recent advancements in research and engineering have brought fourth groundbreaking improvements in the application of sintering by the ceramic manufacturing industry. When applied, sintering has been used to reduce the porosity and enhance important properties such as strength, electrical conductivity, thermal conductivity, and density. In past studies conventional sintering of the ceramic Yttria Stabilized Zirconia (YSZ) will has requiredrequire temperatures of 1400 or higher, as well as dwell times that lastthat last several hours. [1] While the functionality of sintering provides huge benefits to ceramic manufactures, these high temperatures and time intensive processes, are expensive in terms of energy and equipment costs. As a result, scientist Rishi Raj conducted research where he explored different scenarios that could possibly improve the practicality of sintering. In a recent study, Raj reports, “YSZ can be sintered to full density in only
Flash Sintering is a recently discovered technique that has repeatedly been shown to dramatically lower sintering temperatures in experiments involved with the ceramic Yttria Stabilized Zirconia (YSZ) by applying a DC electric field to the body during the sintering cycle. Data acquired from these experiments have shown a relation between the applied electric field and temperature, which cause densification to occur at lower temperatures and quicker times. Experiments conducted by Raj and others replicate flash sintering to understand how different electric fields and temperatures relate to each other by monitoring the shrinkage and densification of YSZ during flash sintering. Future implementation suggests a great tool for ceramic manufacturing.
Key Words: flash, sintering, electric field, densification, incubation time, YSZ, ceramic, manufacturing, experiment
1.0 BACKGROUND
Diego Solorzano
Flash Sintering of Yttria Stabilized Zirconia: The Beginning of a New Paradigm
2.0 BACKGROUND
Recent advancements in research and engineering have brought fourth groundbreaking improvements in the application of sintering by the ceramic manufacturing industry. When applied, sintering has been used to reduce the porosity and enhance important properties such as strength, electrical conductivity, thermal conductivity, and density. In past studies conventional sintering of the ceramic Yttria Stabilized Zirconia (YSZ) will has requiredrequire temperatures of 1400 or higher, as well as dwell times that lastthat last several hours. [1] While the functionality of sintering provides huge benefits to ceramic manufactures, these high temperatures and time intensive processes, are expensive in terms of energy and equipment costs. As a result, scientist Rishi Raj conducted research where he explored different scenarios that could possibly improve the practicality of sintering. In a recent study, Raj reports, “YSZ can be sintered to full density in only