Effect of nickel boride additions on sintering behavior of injection molded 17-4 PH stainless powder. With increases nickel boride amount, sintering time and temperature, relative density and mechanical properties of specimens increase. Sintering to full density was obtained with the addition of 1 wt.% NiB at 1280degreesC for 45 min. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.