TY - JOUR

T1 - Powder content in powder extrusion moulding of tool steel

T2 - Dimensional stability, shrinkage and hardness

AU - Gonzalez-Gutierrez, Joamin

AU - Thompson, Yvonne

AU - Handl, David

AU - Cano Cano, Santiago

AU - Schuschnigg, Stephan

AU - Felfer, Peter

AU - Kukla, Christian

AU - Holzer, Clemens

AU - Burkhardt, Carlo

PY - 2021/1/15

Y1 - 2021/1/15

N2 - Powder extrusion moulding (PEM) is a versatile and cost-effective technology for producing bi-dimensional shapes, (e.g. tubes and profiles) from metals, ceramics and cermets. PEM quality is affected by powder content; therefore, three highly-filled polymeric compounds containing 50, 55, 60 vol% tool steel powder were prepared and extruded to profiles. Extruded parts were debound in cyclohexane and sintered in forming gas (Ar + 5% H 2) to obtain dense, sintered parts. The dimensional stability, the shrinkage and the hardness were measured. Minimum shrinkage and higher dimensional stability were obtained when the powder content was the highest (60 vol%). Specimens with 50 vol% powder had the highest hardness due to the initial higher binder content and resulting carbon content.

AB - Powder extrusion moulding (PEM) is a versatile and cost-effective technology for producing bi-dimensional shapes, (e.g. tubes and profiles) from metals, ceramics and cermets. PEM quality is affected by powder content; therefore, three highly-filled polymeric compounds containing 50, 55, 60 vol% tool steel powder were prepared and extruded to profiles. Extruded parts were debound in cyclohexane and sintered in forming gas (Ar + 5% H 2) to obtain dense, sintered parts. The dimensional stability, the shrinkage and the hardness were measured. Minimum shrinkage and higher dimensional stability were obtained when the powder content was the highest (60 vol%). Specimens with 50 vol% powder had the highest hardness due to the initial higher binder content and resulting carbon content.

KW - Powder extrusion moulding

KW - Steel

KW - highly-filled polymer

KW - Debinding

KW - Sintering

KW - Profile extrusion

KW - Metals and alloys

KW - Powder technology

KW - Polymers

UR - http://www.scopus.com/inward/record.url?scp=85094881716&partnerID=8YFLogxK

U2 - https://doi.org/10.1016/j.matlet.2020.128909

DO - https://doi.org/10.1016/j.matlet.2020.128909

M3 - Article

VL - 283

JO - Materials letters

JF - Materials letters

SN - 0167-577X

IS - January 2021

M1 - 128909

ER -