TY - GEN
T1 - Evaluation of adhesive and frictional properties of solid lubricants for powder metallurgy by surface force apparatus
AU - Shimamoto, Hanako
AU - Unami, Shigeru
AU - Mizukami, Masashi
AU - Kurihara, Kazue
N1 - Publisher Copyright:
© European Powder Metallurgy Association (EPMA)
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Iron-based powder mixtures for the powder metallurgy (PM) process commonly contain solid lubricants. Both zinc stearate (ZnSt) and N,N'-ethylenebis(stearamide) (EBS), which are conventional lubricants in this field, exhibit similarly adequate lubrication performances. However, their effects on the powder mixture flowability are different; that is, ZnSt causes better flow than EBS. In this study, the adhesive and frictional properties of the five surface combinations (Fe-Fe, Fe-EBS, Fe-ZnSt, EBS-EBS, and ZnSt-ZnSt) were investigated using surface forces and resonance shear measurement. The adhesion forces obtained for all combinations were almost the same. On the other hand, friction forces for Fe-EBS and EBS-EBS combinations, obtained from resonance shear measurement, were larger than others, especially at low applied load (< ca. 1.0 mN). This result suggests that the frictional properties of lubricants at low applied load determine the powder mixture flowabilities.
AB - Iron-based powder mixtures for the powder metallurgy (PM) process commonly contain solid lubricants. Both zinc stearate (ZnSt) and N,N'-ethylenebis(stearamide) (EBS), which are conventional lubricants in this field, exhibit similarly adequate lubrication performances. However, their effects on the powder mixture flowability are different; that is, ZnSt causes better flow than EBS. In this study, the adhesive and frictional properties of the five surface combinations (Fe-Fe, Fe-EBS, Fe-ZnSt, EBS-EBS, and ZnSt-ZnSt) were investigated using surface forces and resonance shear measurement. The adhesion forces obtained for all combinations were almost the same. On the other hand, friction forces for Fe-EBS and EBS-EBS combinations, obtained from resonance shear measurement, were larger than others, especially at low applied load (< ca. 1.0 mN). This result suggests that the frictional properties of lubricants at low applied load determine the powder mixture flowabilities.
KW - Adhesion
KW - Friction
KW - Lubricant
KW - N,N'-ethylenebis(stearamide)
KW - Powder flowability
KW - Surface forces apparatus
KW - Zinc stearate
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M3 - Conference contribution
AN - SCOPUS:85101980315
T3 - Euro PM 2019 Congress and Exhibition
BT - Euro PM 2019 Congress and Exhibition
PB - European Powder Metallurgy Association (EPMA)
T2 - European Powder Metallurgy Congress and Exhibition, Euro PM 2019
Y2 - 13 October 2019 through 16 October 2019
ER -