sintered Vitallium® Alloy beads

English translation: ...beads sintered...

12:16 Jul 13, 2004
English language (monolingual) [PRO]
Tech/Engineering - Metallurgy / Casting
English term or phrase: sintered Vitallium® Alloy beads
I only would like to know whether Vitallium® Alloy is sintered (prior to bead formation) or beads are sintered?


CONTEXT (total hip prosthesis)
The coatings incorporated on the stems and metal shells consist of: sintered Vitallium® Alloy beads, Titanium plasma spray or a Titanium bond layer overlaid with a layer of hydroxylapatite.
Barbara Piela
Local time: 05:37
Selected answer:...beads sintered...
Explanation:
I think in this case the beads are sintered.

Definition: The bonding of adjacent surfaces of particles in a mass of powder or a compact by heating. Sintering strengthens a powder mass and normally produces densification and, in powdered metals, recrystallization.


"...The prosthesis 101 is in the form of a porous biomaterial (e.g., Vitallium powder or F-75 cobaltbased alloy). The devise 101 consists of many, many particles of the biomaterial fused together by sintering at points of contact with each other to define a plurality of interconnected pores which permit bone ingrowth at the surface 1B, cartilage ingrowth at the surface 1A and nutrient flow therein. The pores are distributed through most of the porous prosthesis. "

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Note added at 22 mins (2004-07-13 12:38:27 GMT)
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http://www.sarcoma.org/publications/mcs/ch25.pdf
http://www.dpci.unipd.it/DipPagesIt/Didattica/ Biomateriali/Biomedical%20applications.pdf
Selected response from:

Elena Petelos
United Kingdom
Local time: 04:37
Grading comment
Thanks a lot!
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
5 +4...beads sintered...
Elena Petelos


  

Answers


19 mins   confidence: Answerer confidence 5/5 peer agreement (net): +4
sintered vitallium® alloy beads
...beads sintered...


Explanation:
I think in this case the beads are sintered.

Definition: The bonding of adjacent surfaces of particles in a mass of powder or a compact by heating. Sintering strengthens a powder mass and normally produces densification and, in powdered metals, recrystallization.


"...The prosthesis 101 is in the form of a porous biomaterial (e.g., Vitallium powder or F-75 cobaltbased alloy). The devise 101 consists of many, many particles of the biomaterial fused together by sintering at points of contact with each other to define a plurality of interconnected pores which permit bone ingrowth at the surface 1B, cartilage ingrowth at the surface 1A and nutrient flow therein. The pores are distributed through most of the porous prosthesis. "

--------------------------------------------------
Note added at 22 mins (2004-07-13 12:38:27 GMT)
--------------------------------------------------


http://www.sarcoma.org/publications/mcs/ch25.pdf
http://www.dpci.unipd.it/DipPagesIt/Didattica/ Biomateriali/Biomedical%20applications.pdf


    www2.sjsu.edu/faculty/selvaduray/ page/papers/mate115/brendancroom.pdf
    Reference: http://www.ipmall.info/hosted_resources/exams/95-PP1-FALL-FI...
Elena Petelos
United Kingdom
Local time: 04:37
Native speaker of: Greek
PRO pts in category: 4
Grading comment
Thanks a lot!

Peer comments on this answer (and responses from the answerer)
agree  Vicky Papaprodromou
20 mins
  -> Thanks Vicky! :-)

agree  Gillian Scheibelein: sintering only makes sense in compacts as the grains of powder have to partially melt and bond during sintering.
1 hr
  -> Thanks! Yes..even hydroxyapatite sintering....for composites! :-)

agree  Jörgen Slet: and with Gillian
1 hr
  -> Thanks!

agree  chopra_2002
3 hrs
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