Cho, TS Jeung, WY 2024-01-21T12:40:38Z 2024-01-21T12:40:38Z 2021-09-05 2001-03 0379-153X https://pubs.kist.re.kr/handle/201004/140664 The effect of additives on the orientation of magnetic Sr-ferrite powders has been studied during powder injection molding under applied magnetic field for fabricating multi-pole anisotropic sintered Sr-ferrite magnets. The orientation of the Sr-ferrite powders depends sensitively on the fluidity of powder-binder mixture, related to the binder additives and the injection molding temperature, and the magnetic field intensity. The orientation of Sr-ferrite powders is good for the compacts with stearic acid added in the binder system of paraffin wax/carnauba wax/HDPE, but it is poor for the compacts with silane coupling agent added. The orientation of Sr-ferrites higher than 80% is achieved at the following useful conditions; apparent viscosity lower than 2500 poise in 1000 sec(-1) shear rate and applied magnetic field higher than 4 kOe. Korean POLYMER SOC KOREA MECHANICAL-PROPERTIES COUPLING AGENTS Effect of additives on the orientation of magnetic Sr-ferrite powders in powder injection molded compacts Article 1 POLYMER-KOREA, v.25, no.2, pp.240 - 245 POLYMER-KOREA 25 2 240 245 scie scopus kci other 000167871800011 2-s2.0-23444445680 Polymer Science Polymer Science Article MECHANICAL-PROPERTIES COUPLING AGENTS powder injection molding orientation of Sr-ferrites fluidity stearic acid coupling agent