A study1 conducted by M. Radovic and E. Lara-Curzio of the Metals and Ceramics Division, Oak Ridge National Laboratory, used the Buzz-o-sonic testing system to measure the Young's and shear moduli of some tape cast nickel-based anode materials for solid oxide fuel cells. Approximately one half of the samples were reduced in 4% H2 and 96% Ar gas mixture at 1000 °C for 30 minutes. Some of the results are shown below.

The Young's modulus vs porosity of the nickel-based anodes are shown below in figure 1.

E vs T

Fig. 1. Young's (E) and shear (G) moduli of unreduced and reduced Ni-based anode as a function of porosity

E0 and G0 are the Young's and shear moduli of the samples at zero porosity, respectively


1M. Radovic, and E. Lara-Curzio, "Mechanical properties of tape cast nickel-based anode materials for solid oxide fuel cells before and after reduction in hydrogen," Acta Materialia, 52 5747-5756 (2004)