Orientation Distribution of Acicular CrO2 Particles in Coating.

This article describes how the orientation of acicular particles in coatings decreases from the angle of the applied field as the coatings become dry. Understanding this phenomenon is very important for making obliquely oriented tapes with a definite orientation angle. Obliquely oriented coatings of CrO2 particles were prepared in an electromagnet, and their structure was examined by X-ray diffraction, SEM observation, and magnetic measurement. It became clear that acicular particles in coatings show shrinkage disorientation depending on the coating depth.