skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thin-coating contact mechanics with adhesion.

Abstract

No abstract prepared.

Authors:
 [1];
  1. (,
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
885115
Report Number(s):
SAND2006-3028J
TRN: US200616%%295
DOE Contract Number:
AC04-94AL85000
Resource Type:
Journal Article
Resource Relation:
Journal Name: Proposed for publication in the Journal of Materials Research.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADHESION; THIN FILMS; COATINGS; MECHANICS

Citation Formats

Reedy, Earl David, Jr., and .). Thin-coating contact mechanics with adhesion.. United States: N. p., 2006. Web. doi:10.1557/jmr.2006.0327.
Reedy, Earl David, Jr., & .). Thin-coating contact mechanics with adhesion.. United States. doi:10.1557/jmr.2006.0327.
Reedy, Earl David, Jr., and .). Mon . "Thin-coating contact mechanics with adhesion.". United States. doi:10.1557/jmr.2006.0327.
@article{osti_885115,
title = {Thin-coating contact mechanics with adhesion.},
author = {Reedy, Earl David, Jr. and .)},
abstractNote = {No abstract prepared.},
doi = {10.1557/jmr.2006.0327},
journal = {Proposed for publication in the Journal of Materials Research.},
number = ,
volume = ,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}
  • Abstract not provided.
  • In total joint arthroplasty, long-term outcomes depend in part on the biocompatibility of implant alloys. This study analyzed effects of surface finish and diamond-like carbon coating on osteoblast cell adhesion to polished titanium-aluminum-vanadium and polished or grit-blasted cobalt-chromium-molybdenum alloys. Osteoblast binding was tested in the presence and absence of the cell adhesion proteins fibronectin, laminin, fibrinogen, and vitronectin and was quantified by measurement of DNA content. Although adherence occurred in serum-free medium, maximal osteoblast binding required serum and was similar for titanium and cobalt alloys at 2 and 12 hours. With the grit-blasted cobalt alloy, cell binding was reduced 48%more » (p < 0.05) by 24 hours. Coating the alloys with diamond-like carbon did not alter osteoblast adhesion, whereas fibronectin pretreatment increased cell binding 2.6-fold (p < 0.05). In contrast, fibrinogen, vitronectin, and laminin did not enhance cell adhesion. These results support the hypothesis that cell adhesion proteins can modify cell binding to orthopaedic alloys. Although osteoblast binding was not affected by the presence of diamond-like carbon, this coating substance may influence other longer term processes, such as bone formation, and deserves further study. 40 refs., 4 figs.« less
  • The authors study the surface tension of different alloys based on bismuth, tin, lead and cadmium and the equilibrium angle of contact for crystals wetted by solid solutions in the bismuth telluride-antimony telluride system and the electrical resistance of transitional contacts at the interface of the alloy material with the crystal of the solid solution. They also investigate the dependence of the surface tension and wetting angle on temperature and the dependence of the resistivity and wetting angle on the state of the wetted surfaces. Results are tabulated.
  • The authors use laser spectroscopy to determine the diffusion depth and subsequent cohesive power of the components of a nickel-chromium steel, alloyed with silicon and boron for hardness, during the plasma arc spraying of the steel onto a steel 45 substrate.