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Study of the Effects of Various Nanopowders in the Properties of GPC

Published online by Cambridge University Press:  01 February 2011

Renato Amaral Minamisawa ,
Bopha Chhay ,
Iulia Muntele ,
Lawrence holland ,
Robert Lee Zimmerman ,
Claudiu Muntele  and
Ila Daryush
Renato Amaral Minamisawa
Affiliation:
bopha@cim.aamu.edu, Center of Irradiation of Materials, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, AAMU, Normal, Alabama, Huntsville, Alabama, 35762, United States
Bopha Chhay
Affiliation:
bopha@cim.aamu.edu, Alabama A&M University, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, Normal, Alabama, 35762, United States
Iulia Muntele
Affiliation:
iulia@cim.aamu.edu, Alabama A&M University, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, Normal, Alabama, 35762, United States
Lawrence holland
Affiliation:
holland@cim.aamu.edu, Alabama A&M University, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, Normal, Alabama, 35762, United States
Robert Lee Zimmerman
Affiliation:
rlzimm@cim.aamu.edu, Alabama A&M University, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, Normal, Alabama, 35762, United States
Claudiu Muntele
Affiliation:
claudiu@cim.aamu.edu, Alabama A&M University, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, Normal, Alabama, 35762, United States
Ila Daryush
Affiliation:
ila@cim.aamu.edu, Alabama A&M University, Department of Physics, Center of Irradiation of Materials, Post Office Box 1447, Normal, Alabama, 35762, United States
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Abstract

We have introduced various nanopowders in the precursor of glassy polymeric carbon (GPC) and studied its electrical, thermal, and mechanical properties as well as its chemical structure. In general the GPC ware produced at AAMU is used for making crucibles, heat exchangers, and for prosthetic devices because of its biocompatibility. GPC ware at AAMU is synthesized from a phenolic resin solution from Georgia Pacific in a pyrolyser system at temperatures between 100 °C all the way to 2800 °C. The heat treatment includes several stages: gelling, curing, postcuring, precarbonization and carbonization. The fabrication of GPC is complicated because of the high production rate of gaseous products in critical temperature ranges where out-diffusion is relatively slow. Special care should be taken in temperature programming to avoid kilning faults and misshapen or porous GPC end results. In this work we have introduced SiC, CNT or Al2O3 to the precursor and studied the properties of the final product treated at 1000oC pyrolysis temperature.

Keywords

Cpowderpyrolysis
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 929: Symposium II – Materials in Extreme Environments , 2006 , 0929-II04-06
Copyright
Copyright © Materials Research Society 2006

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