Hot Section Materials Development For Advanced Microturbines Program .


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Hot Section Silicon Nitride Materials Development For Advanced Microturbines and Other Gas Turbine Component Applications. 27th Annual Conference on Composites, Materials, and Structures January 29, 2003 Cape Canaveral/Cocoa Beach, FL Robert H. Licht
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Hot Section Silicon Nitride Materials Development For Advanced Microturbines and Other Gas Turbine Component Applications 27th Annual Conference on Composites, Materials, and Structures January 29, 2003 Cape Canaveral/Cocoa Beach, FL Robert H. Licht Saint-Gobain Ceramics & Plastics, Inc. 508-351-7815; robert.h.licht@saint-gobain.com Goddard Road Northboro, MA 01532

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Hot Section Materials Development For Advanced Microturbines Program Co-Authors: Vimal Pujari, Marc Abouaf, Bill Collins, Brian LaCourse, Ara Vartabedian Acknowledgments Research supported by U.S. Division of Energy (DOE), Energy Efficiency & Renewable Energy, and Oak Ridge National Laboratory (ORNL) oversaw by UT-Battelle, LLC, under Prime Contract No. DE-AC05-00OR22725 with the DOE. ORNL - Dave Stinton, Terry Tiegs, Matt Ferber, Peter Tortorelli, Shannon Bridges. DOE - Debbie Haught, Steve Waslo, Jill Jonkowski UTRC - John Holowczak, Gary Linsey, Bill Treadway Dave Richerson, Dave Carruthers

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Purpose of the Work Hot Section Si 3 N 4 for Advanced Microturbine Program Under DOE/ORNL Program, Develop and enhance a financially savvy, solid silicon nitride material for Hot Section Components in DER Advanced Microturbine Systems Through surface building, show adequate natural security for operation w/o EBC - Or perfect with EBC Overall Goals Contribute to AMTS Objectives of effectiveness, fuel adaptability, sturdiness, working cost Expand utility of HT silicon nitride segment for other influence era and military applications

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Outline AMTS and Hot Section Material Goals Historical - Silicon Nitride for GT Applications Technical Activity - Technical Progress and Plans Material and Process Qualification Materials Process Development Surface Engineering Next Steps and Summary

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DOE Advanced Microturbine Systems 25 kW to 500 kW (or to 1 MW) Goals: Increase proficiency to > 40 % Enabling innovation: earthenware production and EBC Less than 7 ppm NOx Durability - 11,000 hours wager real redesign, 45,000 hour benefit life Cost of Power, $500/kW (now ~$1,000) Fuel Flexible DOE Funding $60 M FY 2000 - 2006

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DOE DER Microturbine System Development Programs Original Prime Contractors Capstone GE Honeywell Power Systems Ingersoll Rand Solar Turbines (recuperator) United Technologies

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Materials Development Objective Develop and advance a high temperature clay material and process appropriate for microturbine applications up to 1300 o C. Particular Properties Fast Fracture RT –   950 MPa 1300 o C   600 MPa Fracture Toughness  6.5 MPa m Weibull Modulus  12 High Temperature Creep Rate  1.9 x 10-8 @ 1250 o C/130 MPa Oxidation Resistance up to 1250 o C Recession Resistance in moist environment up to 1250 o C Properties NT154 (Optimization) Microstructure Processing

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History - Ceramic Gas Turbine DoD Ceramics for High Performance Applications 70\'s & 80\'s: Army Conferences, NAVAIR Bearings NC-132 HPSN DOE Automotive Gas Turbine Programs (80\'s-90\'s) Allison, AlliedSignal Primes Norton/TRW NT154 SN, ASCC, Kyocera, Carborundum SiC

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