Effect of Sintering Temperature on Properties of NiFe2O4-Matrix Inert Anode for Aluminum Electrolysis by Adding Nanopowder

Authors :: Zhang, Zhi Gang
Liu, Yi Han
Yao, Guang Chun
Wu, Di
Du, Jin Jing
Source :: Advanced Materials Research; January 2012, Vol. 457 Issue: 1 p739-743, 5p
Publication Year :: 2012
Abstract: Conventional cold pressing-sintering technique was utilized to fabricate NiFe<subscript>2</subscript>O<subscript>4</subscript>-matrix inert anode for aluminum electrolysis by adding NiFe<subscript>2</subscript>O<subscript>4</subscript> spinel nanopowder. The effect of sintering temperature on properties of NiFe<subscript>2</subscript>O<subscript>4</subscript>-matrix ceramics was investigated especially. The results indicate that the density increases and the porosity decreases with the sintering temperature increasing, due to the higher diffusion coefficient enhanced by higher temperature. The bending strength and fracture toughness reach maximum values of 55.39MPa and 2.53MPa•m<superscript>1/2</superscript> respectively, when the sintering temperature is 1400℃.

Full Text Access

Tools