Materials design considerations involved in the fabrication of implantable bionics by metallization of ceramic substrates

Author

Patel, Surabhi ; Guenther, Thomas ; Dodds, Christopher W. D. ; Kolke, Sergej ; Privat, Karen L. ; Matteucci, Paul B. ; Suaning, Gregg J.

Author_Institution

Grad. Sch. of Biomed. Eng., Univ. of New South Wales, Sydney, NSW, Australia

fYear

2013

fDate

3-7 July 2013

Firstpage

759

Lastpage

762

Abstract

The Pt metallization of co-fired Al₂O₃/SiO₂ substrates containing Pt feedthroughs was shown to be a suitable means to construct implantable bionics. The use of forge welding to join an electrode to such a metallized feedthrough was demonstrated and subsequently evaluated through the use of metallography and electron microscopy. Metallurgical phenomena involved in forge welding relevant to the fabrication of all types of biomedical implants are discussed within this paper. The affect of thermal profiles used in brazing or welding to build implantable devices from metal components is analysed and the case for considered selection of alloys in implant design is put forward.

Keywords

alloys; aluminium compounds; bioceramics; biomedical electrodes; biomedical electronics; brazing; electron microscopy; encapsulation; platinum; prosthetics; silicon compounds; welding; alloys; brazing; ceramic substrate metallization; cofired alumina-silica substrate metallization; electrode; electron microscopy; forge welding; implant design; implantable bionics fabrication; materials design; metallized feedthrough; metallography; metallurgical phenomena; thermal profiles; Ceramics; Electrodes; Metallization; Substrates; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE

Conference_Location

Osaka

ISSN

1557-170X

Type

conf

DOI

10.1109/EMBC.2013.6609611

Filename

6609611