FILLING POROSITY OR VOIDS IN ARTICLES FORMED IN SPRAY DEPOSITION PROCESSES

摘要

PCT No. PCT/GB97/00590 Sec. 371 Date Sep. 1, 1998 Sec. 102(e) Date Sep. 1, 1998 PCT Filed Mar. 4, 1997 PCT Pub. No. WO97/33012 PCT Pub. Date Sep. 12, 1997Porous regions or void regions of spray deposited articles of one composition are infilled with molten material of a differing composition which subsequently solidifies. The molten material flows to infill the porous or void regions under the influence of applied pressure or capillary type action. Typically, the sprayed material is molten metallic material, and the void porosity filling material is also metallic in composition but having a lower melting point.