TY - JOUR
T1 - Development of niobium powder injection molding
T2 - Part I. Feedstock and injection molding
AU - Aggarwal, Gaurav
AU - Park, Seong Jin
AU - Smid, Ivi
N1 - Funding Information:
The authors gratefully acknowledge the Ben Franklin Technology Development Authority for funding this research through the Center for Innovative Sintered Products. Furthermore, this research benefited from helpful suggestions of Dr. Sundar Atre.
PY - 2006/5
Y1 - 2006/5
N2 - It has been only during the past four decades that niobium has been consumed on an industrial scale. Pure niobium and niobium base alloys constitute less than 2% of the global niobium market. Niobium being a refractory metal doesn't have a powder cost penalty as in ferrous materials, since refractory parts are formed from powders. This article details a systematical approach to develop feedstock for powder injection molding of niobium. It has been proven that powder injection molding is a viable forming technique for pure niobium. Further, rheological properties have been combined to determine optimal and critical solids loading. Based on simulation, injection temperatures and pressures were determined for optimal filling time. For the first time, a processing window has been identified based on the rheological behavior and simulation of niobium feedstock.
AB - It has been only during the past four decades that niobium has been consumed on an industrial scale. Pure niobium and niobium base alloys constitute less than 2% of the global niobium market. Niobium being a refractory metal doesn't have a powder cost penalty as in ferrous materials, since refractory parts are formed from powders. This article details a systematical approach to develop feedstock for powder injection molding of niobium. It has been proven that powder injection molding is a viable forming technique for pure niobium. Further, rheological properties have been combined to determine optimal and critical solids loading. Based on simulation, injection temperatures and pressures were determined for optimal filling time. For the first time, a processing window has been identified based on the rheological behavior and simulation of niobium feedstock.
UR - http://www.scopus.com/inward/record.url?scp=29244470541&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=29244470541&partnerID=8YFLogxK
U2 - 10.1016/j.ijrmhm.2005.06.003
DO - 10.1016/j.ijrmhm.2005.06.003
M3 - Article
AN - SCOPUS:29244470541
SN - 0263-4368
VL - 24
SP - 253
EP - 262
JO - International Journal of Refractory Metals and Hard Materials
JF - International Journal of Refractory Metals and Hard Materials
IS - 3
ER -