Measurement of the diffuse double-layer forces between zirconia and alpha-alumina

Atomic force microscopy measurements were carried out between zirconia and alpha-alumina colloids over a wide pH range and in 1x10(-4) M sodium chlori del aqueous solution. The electrophoretic mobility and potentiometric titra tions were performed on the zirconia and alpha-alumina colloid samples, res pectively. The electrical double-layer forces measured by atomic force micr oscopy were related to the zeta potentials and the isoelectric point of the both mineral dioxides, determined from the electrophoretic mobility measur ements. (C) 1999 American Institute of Physics. [S0021-8979(99)05221-4].