Corey Hardin, University California, Riverside, US (West Coast)

Corey earned his Bachelor and Masters degrees in Mechanical Engineering from University California, Riverside, and is continuing as a PhD candidate in Mechanical Engineering under Dr Javier Garay. He has presented his research as lead author at 8 international conferences ranging from near his home in Southern California to Shanghai, China. His current research focus is on the densification behaviour of nanocrystalline photonic ceramics used in high power lasers, Luminescence thermometry phosphors, as well as solid state lighting applications.

 

CAPAD processing of rare earth doped zirconia for high temperature light emission applications

Measuring the temperature of high temperature moving parts can be extremely difficult, especially in cases such as jet turbines where flames interfere with conventional optical pyrometers and will not allow the measurement of a specific component's temperature. Luminescence thermometry materials are an exciting solution to this problem as these allow for relatively targeted temperature measurement in such an environment. 

Terbium doped zirconium oxide has been calculated to be one of the highest temperature luminescence thermometry materials ever made, but attempts to produce it using conventional sintering have been unsuccessful due to Terbium reverting to a non-luminescent state under equilibrium processing conditions. By using the CAPAD processing technique, the processing of the material is reduced from several hours to mere minutes. In this work, a processing study is presented, showing production of transparent, luminescent, nanocrystaline Terbium doped Zirconia utilizing the CAPAD.