The interaction between molten metals and the sintered magnetic oxide BaFeO has been studied in order to determine its wettability. Pure copper, silver and silver-zinc alloys, insofar as they are very oxygen-active are the metals considered. The pure metals do not wet the ferrite. Introduction of zinc into silver results in a strong interaction between liquid and the ferrite thus giving a marked decrease of the contact angle. Coating the ferrite with an intermediate surface-active metal which forms a solid solution with the molten metal results in complete spreading if the temperature, time of contact and thickness of the deposited metal are adequately controlled. © 1975.
Wetting of barium hexaferrite by molten metals
Passerone A;
1975
Abstract
The interaction between molten metals and the sintered magnetic oxide BaFeO has been studied in order to determine its wettability. Pure copper, silver and silver-zinc alloys, insofar as they are very oxygen-active are the metals considered. The pure metals do not wet the ferrite. Introduction of zinc into silver results in a strong interaction between liquid and the ferrite thus giving a marked decrease of the contact angle. Coating the ferrite with an intermediate surface-active metal which forms a solid solution with the molten metal results in complete spreading if the temperature, time of contact and thickness of the deposited metal are adequately controlled. © 1975.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
