US EPA

3562660 

Journal Article 

Debinding properties' study of a 316-L stainles steel feedstock 

Rei, M; Souza, JP; Schaeffer, L 

2001 

1 

Key Engineering Materials
ISSN: 1013-9826
EISSN: 1662-9795 

KEY ENGINEERING MATERIALS 

189-1 

616-622 

WOS:000168303300097 

This paper describes the behavior of a 316-L stainless steel
feedstock's front low pressure injection molding process steps (MIM). The qualitative
composition is 316-L stainless steel powder, ethylene and vinyl acetate copolymer (EVA), 140-
macrocrystalline paraffin, carnauba wax and stearic acid. Thermogravimetric analyses were used to
determine the quantitative composition of the binder system, while the quantitative composition
of feedstock was determined by the knowledge of the mixture's critical loading. The feedstock
was molded by low pressure injection molding in a MIGL-33 machine and submitted to a wicking
debinding process, or immersed in carbon tetrachloride or in carbon dioxide under supercritical
conditions. After the above mentioned procedure, the parts were submitted to thermal extraction. 

316-L stainless steel; powder injection moulding; supercritical extraction