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Coefficient of Friction Characterization of Surface‐Modified Polycrystalline Alumina
Author(s) -
Kusy Robert P.,
Keith Olga,
Whitley John Q.,
Saunders Carl R.
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb03788.x
Subject(s) - crystallite , materials science , polycrystalline diamond , coating , surface modification , biocompatibility , diamond , deposition (geology) , carbon fibers , titanium , composite material , characterization (materials science) , diamond like carbon , friction coefficient , metallurgy , chemical engineering , thin film , composite number , nanotechnology , paleontology , sediment , engineering , biology
Applications in dental medicine sometimes require efficient and reproducible sliding, while maintaining biocompatibility and aesthetics. Several techniques of surface modification are explored for polycrystalline alumina materials: ion implantation, diamond‐like carbon coating, and plasma deposition. Using a light‐load, low‐velocity, single‐pass device, the frictional coefficients of orthodontic appliances are simulated. Materials that were investigated include couples of polycrystalline alumina (PCA) against stainless steel (SS) or β‐titanium (β‐Ti). Although all techniques of surface modification reduced the frictional coefficients below those values for the control couples, plasma deposition and diamond‐like carbon coating proved best for the PCA/SS and PCA/β‐Ti couples, respectively. In these cases, values decreased below those of conventional SS against SS and β‐Ti against SS, respectively.