Deidre A. Hirschfeld
Hirschfeld received her BS from Carnegie-Mellon University and her M.
from University of British Columbia. She worked in the steel industry
in both R&D and
production for about 5 years before returning to graduate school and
earning a Ph.D.
from Virginia Polytechnic Inst. & State University. She was a
research associate then
a tenured faculty member at VPI&SU before joining NMT as an
associate professor. She has served as Department Chair and is a full
professor. Currently, she teaches undergraduate processing &
lab, Capstone Senior Design, Design of Experiments and Statistical
Analysis to both
undergrads and graduate students, and phase equilibria. Dr.
Hirschfeld's research is focused on the cost effective processing of
materials using techniques such as thermal spray and solid free form
fabrication. Her team routinely uses
designed experiments in their research.
Institute of Mining & Technology
Materials and Metallurgical Engineering
159 Jones Hall
801 Leroy Place
Socorro, NM 87801
Dr. Hirschfeld and
her group have put metal and erosion resistant coatings on polymers and
polymer matrix composites. They have put copper coatings onto
polyurethane with a zinc bond coat, zinc metal on kapton, and WC-Co on
polyimide composites and used plasma spray to fabricate castware for
reactive metals. Equipment for plasma (Plasmadyne 3600 with SG100 gun)
and wire flame (Sulzer-Metco 12E) spraying are currently in use at New
Mexico Tech. A new thermal spray lab is being installed in Old Jones
Hall that will improve and expand capabilities for powder flame spray,
twin wire arc, and plasma spraying. Dr. Hirschfeld and her students
have worked with a variety of systems at the Thermal Spray Research
Lab, Sandia National Labs, Albuquerque, NM. Recently, they have been
able to produce thin, dense, textured coatings using Very Low Pressure
Plasma Spraying that are similar to those created using vapor
deposition processes.Her research has included: Sulzer-Metco 6P, St.
Gobain-Norton Rokide, Sulzer-Metco Controlled Atmosphere Plasma
Spraying which is also known as Very Low Pressure Plasma Spraying, cold
spray, HVOF, calorimetry of flames, and spectroscopic analysis of
A graduate student is shown Flame Spraying Copper and Zinc
Polyurethane Disks with Sulzer-Metco 12E using Oxy-Propane.
Calorimeter used to measure heat flux of flame.
Metco 6P Spraying Ceramics and Metals
YSZ Columnar Microstructure
formed using Very
Low Pressure Plasma Spraying.
Solid Free Form Fabrication
Dr. Hirschfeld and her
students have worked on a variety of solid free form fabrication
Robocasting which was originally developed at Sandia National Labs and
now is a commercial process
She and her students have robocast a variety of ceramics, metals, and
graded silicon nitride/tungsten. Her group has also conducted research
on using plasma
spraying to make reusable castware for metals.
Alternative Energy and Batteries
spiral was robocast and is being evaluated as a space saving geometry
Oxide Fuel Cells. The spiral is approximately 50 mm in diameter.
Ceramic Metal Composites have also been produced.
|Functionally Gradient Silicon Nitride to Tungsten
Dr. Hirschfeld and
her students have worked with Sandia National Labs in developing a
hydrogen reformer for micro scale fuel cells
and novel thermal sprayed ceramics for SOFCs.
currently researching methods to improve Li ion batteries.
with EMRTC (NMT Energetic Materials Research and Testing Center) and
Sandia National Labs, Dr. Hirschfeld has utilized
her knowledge of ceramic rheology and particle surface properties to
stabilize and characterize energetic materials. Research with EMRTC
has involved modifications to propellants and gas generators, that will
enable these materials to be safely transported then utilized on demand
without significant reduction in properties.
Dr. Hirschfeld is
always interested in challenging projects. She has worked on materials
selection for the Waste Isolation Pilot Plant (WIPP), Carlsbad, NM, and
a variety of
projects for a variety of businesses that include the development of
slip resistant tiles, synthetic minerals, and porous ceramics. She also
runs the Materials Engineering Department thermal analysis laboratory
(DTA, TGA, and dilatometry to 1500°C).
Lustre Glazed Tiles developed for irridescent appearance and slip
Cost Effect Processing of ceramics, metals, and advanced composites
Structure and Properties of engineering ceramics and advanced
Solid Free Form Fabrication of ceramic, metal, and composite components
Ceramic coatings for oxidation and corrosion resistance
of micro-electromechanical systems
Fuel cell materials
Characterization and Development of Energetic Materials and Armors
Department of Energy
Sandia National Labs
Los Alamos National Labs
Industry to allow students to experience the “Real World” before they
are truly part of it. If you have a project/problem that you would like
our students to investigate, please contact me for details. We
have completed projects for a variety of companies including Motorola,
TPL, Inc., Wall Colmonoy, Nambe, NAVAIR-China Lake, and others.
Experiments and Statistics for Engineers and Scientists
engineering approach to practical statistics and experimental design
for all engineers and scientists. All engineers and scientists need to
know how to evaluate data and how to minimize the cost of
experimentation while obtaining the most information. This course
covers all the basic analyses used in Six Sigma and is offered as a
Distance Education Class. This course began as a mini-course developed
by Dr. Alan Gutjahr, NMT Mathematics Professor, and Dr. Hirschfeld with
funds from the New Mexico Council for Excellence in Education.
This is a lab course that is part of the new curriculum implemented in
2008 that describes through experimentation the processing and
microstructural characterization of metals, ceramics, polymers, and
composites. Topics covered in this intensive laboratory course include
casting and solidification of metals, cold working and heat treatment
of metals, welding of metals, synthesis of ceramics by solid state
reaction, sol gel, and combustion methods, casting of ceramics,
injection molding and extrusion of polymers, crystallization of
polymers, and production of metal, ceramic, and polymer matrix
Utilizing the resources provided by a Dept. of Education Grant, welding
is being added to the curriculum. It was added this year (Fall 2009) as
part of the Processing and Microstructure Lab and is being developed
into a full semester course for Spring 2011 covering a variety of
welding techniques both gas and arc.
Community College, and beyond
Dr. Hirschfeld and
her students are available to discuss Materials Science and Engineering
to students of all ages. The presentations include demos and hands
on activities illustrating the processing and properties of all types
of materials: metals, ceramics, polymers, and composites - “the
stuff” from which everything is made. The practical application of
basic chemistry and physics principles are demonstrated and discussed,
such as why atomic bonding is important.
In addition, Dr.
Hirschfeld can discuss the college experience (under-grad and grad)
from a professors’ point of view, helpful hints for your first job as
an engineer, equity issues in the workplace, and the transition from
Community College to 4-year universities.
Spinhirne, D. Hirschfeld, A Hall, J. McClosky, “The Development and
Characterization of Novel Yttria-Stabilized Zirconia Coatings
Deposited by Very Low Pressure Plasma Spray”, International Thermal
Spray Conference Proceedings, 2009, Las Vegas, NV
2. White, RB; Dean, SW; Pantoya, ML; Hirschfeld, DA;
Gill, W; Erikson, WW, “Effect of Aluminum on Heat Flux from a Simulated
Propellant Flame,” J. Of Propulsion and
Power; NOV-DEC 2007; v.23,
3. A.C. Hall, D.J.Cook, R.A. Neiser, T.J.Roemer, and D.A. Hirschfeld,
“The Effect of a Simple Annealing Heat Treatment on the Mechanical
Properties of Cold Sprayed Aluminum,” Journal of Thermal Spray Technology, 15(2), June 2006, p.
Figure from this article was chosen for the cover of the journal!
4. D. L. Vasquez, T. Ndalama, D.A.
Hirschfeld, and J. K. Sutter, “Effect of Surface Modification on
Adhesion of a Metal Bond Coat to
PMR Composites”, Journal of High Performance Polymers, 17, 2005,293-302.
5. J.N. Stuecker, J Cesarano, and
D.A.Hirschfeld, “Control of the Viscous Behaviour of Highly
Concentrated Mullite Suspensions for
Robocasting,” Journal of Materials Processing Technology, v. 142 (2),
2003, p. 318-325
6. M.V. Collins, L.E.S. Rohwer, A.D.
Oliver, M.G. Hankins, and D.A. Hirschfeld, “Optimization of Anodic
Bonding to MEMS with
Self-Assembled Monolayer (SAM) Coatings, Micromachining and
Microfabrication,” Proceedings of the SPIE - The International Society
for Optical Engineering, 2001, V. 4558, p.234-41
7. G. He, D. Hirschfeld, J. Cesarano,
J. Stuecker, “Robocasting and Cofiring if Functionally Graded SI3N4 -W
Engineering & Science Proceedings, V. 22, No. 4, 2001, 119-126.
8. M.V. Collins, D.A. Hirschfeld, and
L.E. Shea, Effects of Processing Parameters on Properties of Alumina
Formed by Combustion
Synthesis Innovative Processing and Synthesis of Ceramics, and Glasses,
and Composites IV Edited by Narottam P. Bansal and
J.P. Singh, Ceramic Transactions Vol. 115, 2000, 83-92
9. J. N. Stuecker, D. G. Martin, and
D. A. Hirschfeld, “CMZP and Mg-doped Al2TiO5 Coatings as Possible
Oxidation Protection for
Carbon-Carbon Composites,” Journal of Materials Science, 34 (1999),
10. T. K. Li, D. A. Hirschfeld, and J.
J. Brown, “Alkali Corrosion Resistant Coatings for Si3N4 Ceramics”,
Journal of Materials Science,
32(8), 1997, pp 4455-4461.
11. K. H. Lee, D. A. Hirschfeld, and
J. J. Brown, “In Situ Whisker-Reinforced AlPO4-Modified b-Eucryptite
and Crystallization Kinetics” Journal of the American Ceramics Society,
79(3), 1996, 597-602.
12. T. K. Li, D.A.Hirschfeld, and
J.J.Brown, “Thin film coatings of (Ca0.6,Mg0.4)Zr4(PO4)6 (CMZP)
Ceramics” Journal of the Materials
13. T. K. Li, D. A. Hirschfeld, S.
VanAken, Y. P. Yang, and J.J.Brown, “The Synthesis, Sintering, and
Thermal Properties of
(Ca0.6,Mg0.4)Zr4(PO4)6 (CMZP) Ceramics,” Journal of the Materials
1. Patent Application Filed November, 2008: D.A. Hirschfeld, C.
Hockensmith, C. Rhodes, “Method for Treating Iron in a Silver Recovery
2. D. A. Hirschfeld,
W. K. Schubert, and C. S. Watson, “A Novel Low Temperature Method for
the Anodic Bonding of Glass to Silicon”, US Patent 6,660,614 Granted,
December 9, 2003.
3. J.J. Brown,
D.A.Hirschfeld, D. M. Liu, Y. Yang, T. Li, R. Swanson, S. VanAken, and
J. M. Kim, “Ceramic Materials with Low Thermal Conductivity and Low
Coefficients of Thermal Expansion”, U.S. Patent No. 5,102,836 Granted
D.A.Hirschfeld, and J.J.Brown, “An In-Situ Whisker Reinforced
Glass-Ceramic”, U.S. Patent No. 5,186,729 Granted February, 1993.
5. T.K. Li,
D.A.Hirschfeld, and J.J.Brown, “Alkali Corrosion Resistant Coatings and
Ceramic Foams Having Superfine Open Cell Structure and Method of
Processing”, U.S. Patent No. 5,268,199 Granted December, 1993.