Accession Number : AD0451140


Title :   FERRITES, MAGNETIC, H.F.


Descriptive Note : Rept. no. 8 (Final), 1 June 62-30 June 64,


Corporate Author : INDIANA GENERAL CORP KEASBEY NJ


Personal Author(s) : Schwabe, Eberhard ; O'Neill, Charles


Report Date : 30 Jun 1964


Pagination or Media Count : 1


Abstract : The approach to the work was split into two directions based on the grain size of the sintered ferrite. One direction involved a study of ferrites with grains which are relatively inhomogeneous and range in size from 1 micron to more than 100 microns. The second direction involved a study of ferrites with a relatively homogeneous grain structure, with grains ranging from 1 micron to 3 microns. The two directions are distinguished by calling the ferrites produced either coarse-grain ferrites or fine-grain ferrites, respectively. The report is presented in two parts: Part I concerns Mn-Zn Ferrites and Part II concerns Ni-Zn Ferrites. Each part has a section A and a section B. Section A concerns coarse-grain materials and section B concerns fine-grain materials. There are four primary steps in the ceramic preparation of a ferrite: calcining, milling, pressing and sintering. Through the years a more or less standard procedure has been developed for the first three of these steps and the sintering schedule has been used as the principle variant. (Author)


Descriptors :   *FERRITES , *SPINEL , MANUFACTURING , IRON COMPOUNDS , NICKEL COMPOUNDS , MANGANESE COMPOUNDS , ZINC COMPOUNDS , MAGNETIC PROPERTIES , PERMEABILITY(MAGNETIC) , TEMPERATURE , MATERIAL FORMING , HIGH FREQUENCY , GRAIN STRUCTURES(METALLURGY) , PARTICLE SIZE , SINTERING , HIGH TEMPERATURE , X RAY DIFFRACTION , VERY HIGH FREQUENCY , AGING(MATERIALS) , OXIDES , PREPARATION , MAGNETIC MATERIALS


Distribution Statement : APPROVED FOR PUBLIC RELEASE