The effect of reactive element on texture and grain boundary character distribution in nickel oxide

摘要

Texture and grain boundary character in NiO grown at 1073 K, on pure and CeO_2 coated polycrystalline nickel, have been studied. The presence of CeO_2 substantially reduced the Ni oxidation rate and influenced the NiO texture. While pure NiO exhibits a<110> fibre texture oriented with axis along growth direction, in NiO modified with CeO_2 the <100> fibre texture is observed. A numerical analysis of the orientation distribution functions obtained from X-ray measurements indicates that the grain boundary character distribution in NiO did not change essentially after addition of CeO2.