Robust, High Temperature Containment Cartridges for Microgravity

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NAS8-02107
Agency Tracking Number: 013491
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Plasma Processes, Inc.
4914 Moores Mill Road, Huntsville, AL, 35811
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Scott O'Dell
 Principal Investigator
 (256) 851-7653
 scottodell@plasmapros.com
Business Contact
 Cheri McKechnie
Title: Business Manager
Phone: (256) 851-7653
Email: cmckechnie@plasmapros.com
Research Institution
N/A
Abstract
High temperature, corrosion resistant cartridge materials are needed for microgravity processing experiments. Tungsten and molybdenum have high melting temperatures and in general possess the required chemical inertness. To improve the mechanical properties of these materials, alloy additions such as rhenium are necessary. Recently, thin-walled, closed-end cartridges have been fabricated from elemental blends of molybdenum-rhenium powders. However high temperature heat treatments are necessary to alloy elemental blended powders. Problems with distortion, intermetallic formation and incomplete alloying have occurred. To overcome these problems, an innovative Plasma Alloying and Spheroidization (PAS) process is being developed to produce pre-alloyed molybdenum-rhenium and tungsten-rhenium powders. Benefits of the PAS process such as a two-order magnitude reduction in oxygen contamination, enhanced flow characteristics, ability to produce pre-alloyed refractory metal powders and the ability to reduce heat treatment processing time were demonstrated during Phase I. During Phase II, the PAS process will be optimized. The optimized PAS Mo-Re and W-Re powders will be used for the production of robust, high temperature QMI and GEDS cartridges for microgravity processing experiments.

* information listed above is at the time of submission.

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