Preparation of nanocomposite Ni/YSZ cermet powder by EDTA complexes–gel conversion process

A homogeneous, nanocomposite Ni/YSZ cermet powder was prepared by EDTA complexes–gel reduction process (CGRP). Zr–Y–Ni–O gel powder was formed from soluble complexes in aqueous solution. NiO/YSZ powder was obtained after the gel powder had been heat-treated in air for 2 h at 600 °C. Ni/YSZ powder was prepared by reducing the NiO/YSZ powder in hydrogen for 2 h at 850 °C. The X-ray diffraction (XRD) peak broadening result is consistent with the ZrO2 crystallite size of 38 nm in the Ni/YSZ cermet powder. The particle size of the Ni/YSZ cermet powder is 30–50 nm, according to the transmission electron microscopy (TEM) analysis. [Copyright &y& Elsevier]