scholarly journals Closure to “Discussion of ‘The Unlubricated Sliding Wear Behavior of a Wrought Cobalt-Chromium Alloy Against Monolithic Ceramic Counterfaces’” (1990, ASME J. Tribol., 112, p. 743)

1990 ◽  
Vol 112 (4) ◽  
pp. 743-744
Author(s):  
C. V. Cooper ◽  
C. L. Rollend ◽  
D. H. Krouse
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Cobalt Chromium Alloy

The Unlubricated Sliding Wear Behavior of a Wrought Cobalt-Chromium Alloy Against Monolithic Ceramic Counterfaces

1989 ◽  
Vol 111 (4) ◽  
pp. 668-674 ◽  
Author(s):  
C. V. Cooper ◽  
C. L. Rollend ◽  
D. H. Krouse
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Degradation Mechanism ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Material Degradation ◽  
Friction Behavior ◽  
Solution Treated ◽  
Wear And Friction ◽  
Cobalt Chromium Alloy

The unlubricated sliding wear and friction behavior of a wrought cobalt-chromium alloy against sintered Al2O3, ZrO2-toughened Al2O3, MgO-partially-stabilized ZrO2, and hot-pressed Si3N4 ceramic counterfaces has been investigated. Both untreated (baseline) and surface-borided conditions of alloy 6B disks were investigated. The dominant wear and/or material degradation mechanism for surface-borided alloy 6B was a combination of abrasion and plastic deformation; in addition, adhesive transfer of the cobalt alloy to monolithic Al2O3 counterfaces was a significant wear mechanism for the as-solution-treated alloy 6B disk. For the partially stabilized ZrO2 counterface, the degradation mechanism involved thermal and/or mechanical fatigue processes, resulting in the formation of microcracks in the 6B disks transverse to the sliding direction. This microcracking has been ascribed to the low thermal conductivity of the partially stabilized ZrO2 and the activation of a martensitic, fcc-to-hcp transition with each passing of the ZrO2 ball. For borided alloy 6B against hot-pressed Si3N4, a transition from negligible to severe wear was noted with increasing sliding speeds.

scholarly journals Delivery of paclitaxel from cobalt–chromium alloy surfaces without polymeric carriers

Biomaterials ◽  
2010 ◽  
Vol 31 (20) ◽  
pp. 5372-5384 ◽  
Author(s):  
Gopinath Mani ◽  
Celia E. Macias ◽  
Marc D. Feldman ◽  
Denes Marton ◽  
Sunho Oh ◽  
...  
Keyword(s):  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Polymeric Carriers ◽  
Cobalt Chromium Alloy

Mechanical strength of laser-welded cobalt-chromium alloy

2004 ◽  
Vol 69B (2) ◽  
pp. 121-124 ◽  
Author(s):  
N. Baba ◽  
I. Watanabe ◽  
J. Liu ◽  
M. Atsuta
Keyword(s):  
Mechanical Strength ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Cobalt Chromium Alloy

Clinical, Radiographic, and Histological Evaluation of Porous Rooted Cobalt-Chromium Alloy Dental Implants

1980 ◽  
Vol 59 (2) ◽  
pp. 99-108 ◽  
Author(s):  
Larry J. Peterson ◽  
Ralph V. McKinney ◽  
Billy M. Pennél ◽  
Jerome J. Klawitter ◽  
Allan M. Weinstein
Keyword(s):  
Dental Implants ◽  
Histological Evaluation ◽  
Chromium Alloy ◽  
Cobalt Chromium ◽  
Cobalt Chromium Alloy

Forty-five cobalt-chromium alloy porous rooted dental implants were placed in dogs. They were evaluated periodically over two years. The implants were successful one-third of the time. Failures occurred early (two months) or late (after six). Attempts to explain the failures, early and late, are made.

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