Micro-Scratching of UHMW Polyethylene Surfaces

Yan Yan Liu; Laura G. Gladkis; Heiko Timmers

doi:10.4028/www.scientific.net/MSF.654-656.2455

Paper Titles

Testing of Aluminium Carbide Formation in Hall-Heroult Electrolytic Cell
p.2438

Thermodynamic Evaluation of the Fe-Pr Binary System
p.2442

Nanoindentation Characterization of Intermetallics Formed at the Lead-Free Solder/Cu Substrate Interface
p.2446

Formation and Mechanical Properties of Intermetallic Compounds in Sn-Cu High-Temperature Lead-Free Solder Joints
p.2450

Micro-Scratching of UHMW Polyethylene Surfaces
p.2455

A New Micromechanical Elasto-Plastic Constitutive Model for Fiber-Reinforced Composite Laminates
p.2459

Mechanical Properties of Metallized Single Nanofibers
p.2463

Synthesis, Characterization and Analytical Modelling of Mechanical Behavior of a Conducting Polymer Actuator
p.2467

Rheological Properties of a Particulate-Filled Polymeric Composite through Fused Deposition Process
p.2471

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Micro-Scratching of UHMW Polyethylene Surfaces

Micro-Scratching of UHMW Polyethylene Surfaces

Abstract:

Ultra-high molecular weight polyethylene has been micro-scratched with 90° cube corner tips. The scratch mode was flat-on, uni-directional and single pass. The micro-scratches and cross-sectional scratch profiles were characterised with atomic force microscopy. No detached debris is produced. Cross-sectional scratch profiles have been analysed using Zum Gahr’s formalism giving an fab ratio slightly above zero. This is consistent with expectation for ductile polymers where none or little detached debris is produced. However, the observation contrasts with that for other polymers, such as PMMA, PEP and PC, for which inconclusive results suggest an excess pile-up implying an inconceivable change of mass density or material gain.