Micromechanisms of surface friction in zinc electrogalvanized steel sheets

Conference · Tue Apr 04 04:00:00 EDT 1989

OSTI ID:5764586

Shaffer, S J; Philip, A M; Morris, Jr, J W

Significant variations are found in the measured coefficients of friction of commercial zinc electrogalvanized steel (EGS) sheets. The tribological mechanisms apparently differ from those in bare steel. Because of the relative softness of the zinc layer its mechanical properties are important in determining the coefficient of friction. Since zinc is hexagonal its mechanical properties are highly anisotropic, which suggests that the coefficient of friction should depend strongly on the crystallographic texture of the galvanized layer. Such a dependence was found in draw-bead simulator tests on a variety of commercial steels; coatings with a strong basal texture had particularly high coefficients of friction. This result is interpreted on the basis of a simple model that considers the interaction between asperities on the rigid tool and the relatively deformable coating. 12 refs., 9 figs., 1 tab.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5764586
• Report Number(s): LBL-26935; CONF-8909114-; ON: DE89011819
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
DEFORMATION
DEPOSITION
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROPLATING
ELEMENTS
FRICTION
IRON ALLOYS
IRON BASE ALLOYS
LYSIS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
PLATING
ROUGHNESS
SHEAR
STEELS
SURFACE COATING
SURFACE PROPERTIES
TEXTURE
ZINC