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Abstract Summary
Conference:
105th Annual Meeting & Exposition
Instructions
and
Links
Symposium:
20. Ceramic Matrix Composites
Session:
Geopolymer Composites -
1:00:00 PM - 5:00:00 PM 4/28/2003
Abs. Title:
Functional Low-Silica Activity Geopolymer Matrices for Ceramic Composites
Abstract #:
7633
Type:
Oral
Submitted:
4/11/2003 1:24:17 PM
Status:
Accepted
Scheduled?
Yes
Abstract:
Ceramatec, Inc. is currently performing a Phase I STTR project in collaboration with the University of Wisconsin-Madison to develop functional ceramic composite systems with good mechanical properties and high-temperature hydrothermal stability, typical of operating conditions expected in aircraft and stationary turbines and engines. The basic strategy is to select specific synthetic, geomimetic aluminosilicates with low silica activity, a prerequisite for high-temperature hydrothermal stability, as geopolymer precursors. Initial studies have targeted the effects of the extent of dissolution (alkali concentration), type of geopolymer precursor (starting aluminosilicate and activating alkali), secondary phase inclusions, and firing temperature on room-temperature compressive strength and hydrothermal stability of geopolymers. It has been demonstrated that the mean compressive strength can be improved by over a factor of 3 by optimization of the relative concentrations of the aluminosilicate and alkali in the reactant mixture, and geopolymer matrices with mean compressive strengths as high as »99 MPa have been fabricated. Initial studies on hydrothermal stability of the new geopolymer compositions have shown that the stability is strongly dependent on the specific alkali cation introduced into the gel phase during the geopolymerization reaction. It has also been shown that the mean compressive strength of the matrix is a strong function of the particle size and firing temperature.
Abstract Author(s)
1
Primary and Presenting
Balakrishnan Nair -
1007473
Organization
Ceramatec, Inc.
Phone #
801-956-1000
Fax #
801-972-1925
Professional Title
Principal Investigator
Street Address
2425 S. 900 West
City
Salt Lake City
State
UT
Country
United States
Postal Code
84119
2
Co-Author
Duane Doyle -
1012036
Organization
Ceramatec, Inc.
Phone #
Fax #
Professional Title
Street Address
City
Salt Lake City
State
UT
Country
United States
Postal Code
84119
3
Co-Author
Daniel Tinberg -
1012037
Organization
University of Wisconsin
Phone #
Fax #
Professional Title
Street Address
Dept. of Materials Science & Engineering
City
Madison
State
WI
Country
United States
Postal Code
53706
4
Co-Author
Reid Cooper -
1000298
Organization
University of Wisconsin-Madison
Phone #
(608) 262-1133
Fax #
(608) 262-8353
Professional Title
Professor
Street Address
1509 University Ave.
1509 University Ave.
City
Madison
State
WI
Province
Country
United States
Postal Code
53706
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