Powder metallurgical processing of Co–28%Cr–6%Mo for dental implants: Physical, mechanical and electrochemical properties

The parameters for conventional powder-metallurgical production of a CoCrMo alloy for dental implants were determined. With the application of these parameters an alloy with sufficient green density, low porosity after sintering, considerable hardness and spontaneously passive behavior in the Ringer...

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Bibliographic Details
Published in:Powder technology 2011-01, Vol.206 (3), p.233-238
Main Authors: Rodrigues, Wilson Corrêa, Broilo, Luiz Roberto, Schaeffer, Lírio, Knörnschild, Gerhard, Espinoza, Fidel Romel Mallqui
Format: Article
Language:English
Subjects:
Alloy powders
alloys
application parameters
Applied sciences
Chemical engineering
chromium
Cobalt
Cobalt alloys
Compressibility (powder)
Dental implants
electrochemistry
Exact sciences and technology
Hardness
Miscellaneous
molybdenum
Porosity
Powder metallurgy
Powder technology
prostheses
Sintering
Sintering (powder metallurgy)
Sintering, pelletization, granulation
Solid-solid systems
temperature
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Summary:The parameters for conventional powder-metallurgical production of a CoCrMo alloy for dental implants were determined. With the application of these parameters an alloy with sufficient green density, low porosity after sintering, considerable hardness and spontaneously passive behavior in the Ringer solution can be achieved. The comparison of samples with different sintering temperatures revealed that a slight variation of the sintering temperature can have a considerable effect on the physical, mechanical and electrochemical properties of the alloy. The parameters for conventional powder-metallurgical production of a CoCrMo alloy for dental implants were determined. With the application of these parameters an alloy with sufficient green density, low porosity after sintering, considerable hardness and spontaneously passive behavior in the Ringer solution can be achieved. Variation of the sintering temperature had a considerable effect on the physical, mechanical and electrochemical properties of the alloy. [Display omitted]
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2010.09.024