requirements of the composite this method can be employed to prepare metal ceramic and polymer matrix composites application_number US 86323697 A description the method of the present invention comprises the steps of a partially coating a reinforcing fiber or filament with a material which either promotes or deters bonding between the reinforcement and the matrix material b combining the coated fiber or filament with a matrix material and c densifying the composite this partial coating may in the form of bands as shown in fig1 which illustrates a fiber 10 having a plurality of bands or zones 12 of the above referenced material another form of partial coating is shown in fig2 which illustrates a fiber 14 having a plurality of helical zones 16 of such material yet another form of partial coating is shown in fig3 which illustrates a fiber 18 having a plurality of longitudinally striped zones 20 of such material a further form of partial coating is shown in fig4 which illustrates a fiber 22 having a plurality of randomly distributed zones 24 of such material the above referenced material which promotes or deters bonding between the reinforcement and the matrix material depends upon the application for metal matrix composites the preferred material is one that has little or no reactivity with or diffusivity.