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NEWS & EVENTS
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Remembrances of Scott Goodspeed
Scott Goodspeed was a great friend and a loyal colleague. As professors at Stony Brook University Scott was there when we needed him, both as a gracious (complimentary!) supplier of materials for our research studies and for sage advice on all matters, professional and personal. He would give us leads of who was giving what away, and he told us first. I used to think that Scott felt sorry for our then very tight finances. I eventually realized that he really liked our gang and the University. When Scott walked into a room his personality lowered the stress level (and it was quite high with us in those years). His humor and good nature were infective. Scott’s “Let’s go to lunch” was what we looked forward to because we knew that a relaxing hour was imminent. Its not that Herman, Sampath and Berndt were looking for free meals, we just loved him.
As anyone in the industry who knew Scott will attest, he was always ready with professional help and a kind word. His knowledge of thermal spray technology was both comprehensive and wide ranging. He knew countless secrets of the trade and so many people within it, that he was a vast font of knowledge on equipment, materials and methods.
His was a happy life. He loved to talk about Maine, in that “down south” accent, and of his family and home: the kids and what they were doing – a proud and doting father. He told us of the business Cheri and he had to give up and their relocation to a beautiful lake in Maine – he always made the best of trying things. In asking if this were difficult for him, you would get the typical Scott-like reply: A shrug of his shoulders and a vague smile that said “That’s life”. He was rarely perturbed and if we were smart enough to learn from him, we would be happier people.
Scott put many miles on his SUV going from his numerous business stops to home in Maine. If he had worries, you would never know. During one Stony Brook lunch in particular, with his then sidekick and dear friend Dennis Hewitt, after covering the latest gossip, we discussed long distance driving. The exact words of his response are now gone, but in essence he responded that “…I love the freedom of the road, and, anyway, it’s a living.”
Some people come into our lives and quickly go. Some stay for a while and leave footprints on our hearts. And we are never, ever the same.
-Herb Herman and Sanjay Sampath
Nature-Inspired Thermal Spray: Large Scale Processing of Biomimetic Structures
An NSF GOALI partnership between the Center for Thermal Spray Research at Stony Brook University and the Consortium for Thermal Spray Technology was recently funded to continue this highly productive collaboration. The project seeks to harness recently discovered biomimetic mechanical responses of thermalyl sprayed ceramics due to their unique “brick and mortar” morphology. The microstructural geometry produces non-linear elastic and hysteretic stress-strain response during mechanical and thermomechanical loading. The anelastic attributes are similar to those seen for Nacre (mother of pearl) despite the absence of any organic matter within the thermally sprayed interfaces.
The project seeks to develop a fundamental understanding of the mechanical, thermomechanical, and electromechanical, behavior of TS fabricated mesoscale structures rationalized through contemporary analysis of the natural counterparts. Concurrent efforts aimed at process engineering of interfacial structures will enable tailoring of elastic and damage tolerant properties. The goal is to model, design, fabricate, and analyze engineered materials and coatings, considering natural structural principles, guided by pervasive and technologically relevant applications.
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University Turbine Systems Research: TBCs and Gasified Coal
University Turbine Systems Research: TBCs and Gasified Coal
The Department of Energy through NETL has recently funded a CTSR proposal in the University Turbine Systems Research (UTSR) program. The overall objective of the research is to provide enabling science and technology for increased viability of TS multilayer coatings (metallic alloys and ceramics) in integrated gasification combined cycle (IGCC) gas turbine systems. To address the requirements for providing effective thermal protection in the moisture rich hydrogen fuel environment, a system using functional coating architectures and state of the art materials will be investigated. As such, an important goal will be to develop a sound scientific understanding of the material-microstructure-property-performance linkage for these multifunctional coatings in relevant environments.
Far beyond intrinsic properties associated with bulk materials, this work will address the complexity associated with the layered assemblage and defect hierarchy of TS structures and assess how variations in processes affect properties and performance. It is important to note that such a systematic approach is lacking in the literature. Several degradation mechanisms affect the viability of TS coatings. This research will elucidate how several of these mechanisms (high temperature, water vapor, sulfur, deposits, and residual stress) degrade multilayer multifunctional coatings.
ONR: Ship Deck Thermal Management
Since June of this year,  CTSR has embarked on an ambitious
new project to develop thermal management solutions
for ship decks on amphibious assault ships. The advent of
short-take off vertical landing (STOVL)
aircraft operation
based on JSF and the MV-22
Osprey aircrafts have imposed
several thermal loads
on the structural deck material
and the non-skid coatings
present on the surface. CTSR
is developing a novel hybrid multifunctional material strategy
to address the many
conflicting issues of thermal
load, corrosion, and
manufacturing. Aspects of
this program are proprietary
but if successful, it could
be a significant coating
application opportunity for
the thermal spray industry. Stay tuned.
NSF/DOE: TS Thermoelectrics
CTSR in partnership with colleagues from the Mechanical
Engineering Department and Brookhaven National Laboratory
were recently awarded an interdisciplinary research
grant to pursue fabrication of thermoelectric materials onto
tubular sections for exhaust heat recovery from engines.
The goal here is to integrate materials advances (e.g. Mg2Si),
novel processing schemes and integrated wiring to produce
a high performance functional device. This is a challenging
project, but has the potential to propel thermal spray technology
into new territories. The review committee found
the thermal spray based manufacturing concept particularly
appealing and the funding will seek to enhance the material
and device characteristics. The three year award will provide
NSF funds to the tune of $550K with additional $300K support
from various organizations within the University.
Field Trips to Consortium Members’ Sites
Our consortium field trip programs have continued to generate a lot of interest among the members. Since the last newsletter, several field trips have been conducted. During March 2010, a field trip was conducted at Praxair TAFA in Concord, NH with observers from the Naval Research Laboratory. More recently, sensor demonstration and property extraction field trips were conducted at Howmet Corporation in White Hall, MI, at Sulzer Metco in Westbury, NY, at our new member site Hayden Corporation in Springfield, MA and even St. Gobain Research in Avignon, France.
A variety of different materials (oxides, metallic alloys and carbides) were processed using a wide range of spray devices including HVOF, conventional APS, Pro-PlasmaTM and Triplex ProTM. Both particle diagnostics and ICP measurements were conducted.
Each field trip lasts two to three days involving about 1/2 day for set-up, training and safety analysis at the member site. Typically one or two people from CTSR visit the member site and work closely with spray operators, technicians, and engineers in conducting the spray investigations. Within minutes after the deposition, initial results are analyzed and the advances are shared with the various stakeholders. Typically, a followup activity in terms of a more detailed analysis and ex situ characterization is completed upon return to Stony Brook.
This series of field trips in the U.S. and Europe started in 2007, and have proven to be beneficial not only for students and associates at CTSR, but also for researchers and engineers at research facilities, universities, specialized labs, and in industry.
Prof. Sampath Elected Fellow of the American Ceramic Society
Prof. Sanjay Sampath was elected fellow of the American Ceramic Society in 2010 for his contributions to ceramic science and engineering. Elected by peers, this distinct honor is provided to a handful of scientists and engineers each year. Prof. Sampath received his award from ACERS president Ed Fuller during the society’s awards dinner held in October 2010 at the Materials Science and Technology meeting in Houston. Prof. Sampath is now a fellow of two materials societies; ASM and ACERS. Congratulations!
Professor Sanjay Sampath was appointed as a guest professor at University West in Trollhatten, Sweden. The University is a relatively new institution in Sweden having turned a young 20 years old this year. The university’s technical programs were created to develop research and education partnerships with local industries such as Volvo Aero and Saab. In his role as a guest professor, Sanjay will advise graduate students conducting research in thermal spray at the university, promote student and faculty exchanges between Stony Brook and Trollhatten, and participate in both basic and industrial research programs. Prof. Sampath will work closely with Prof. Per Nylen, director of the Production Technology Center at University West.
Dr. Curt Johnson, Adjunct Professor at Stony Brook University
Dr. Curtis Johnson joins CTSR and the Department of Materials Science and Engineering at Stony Brook University as an adjunct professor. He earned his B.S. and Ph.D. degrees in Metallurgy from Penn State. In 1973, he joined General Electric Research, Niskayuna, where he has worked on a wide variety of challenges related to the development and application  of ceramics. In early 2008, Curt retired from his position of Principal Scientist within the Ceramics and Metallurgy Technologies organization at GE Research. He is currently a part-time consultant with GE.
Over the last 37 years, Curt has worked on the development, fabrication, characterization, life prediction and reliability assessment of advanced ceramics and coatings. He helped develop processes for sintering and near-net-shape fabrication of sintered silicon carbide. He helped advance analytical techniques for probabilistic strength and failure
prediction of brittle materials, and has applied those techniques to many products and practical problems. Curt’s recent research interests include thermal barrier coatings and environmental bar-rier coatings with emphasis on fabrication-microstructure-property-performance relation-ships.
Curt has been recognized with three GE Dushman Awards, the Distinguished Career Award from the Hudson-Mohawk Section of TMS in 2008 and the James I. Mueller Award from the American Ceramic Society in 2009. He has authored or co-authored over 25 publications and has 39 issued U.S. patents.
Even during his GE days, Curt has been an external research advisor to CTSR students. Adjunct professor status will allow Curt more active engagements in teaching and research. Welcome Curt!
Focus on CTSR Students & Postdocs
Dr. Alfredo Valarezo and Lorena Bejarano returned to
their native Ecuador and have joined as faculty members at
the Universidad San Francisco de Quito. Lorena is continuing
her Ph.D. work long distance and expects to get her degree
from Stony Brook sometime in 2011.
Jose Colmenares-Angulo completed his PhD defense in
Sept. 2010 and has joined Sulzer Metco as a process engineer.
Prior to joining Sulzer, Jose spent 2 months as a summer
intern there. He also had the opportunity to spend 6
months working on his PhD at NIMS Japan and one month as
a DAAD fellow (German science foundation) at the Energy
Institue in Juelich.
Dr. Yang Tan, CTSR post-doctoral associate, has joined as
a process engineer at Turbine Airfoil Coating and Repair in
Middletown, NY. He received his Ph.D. in Mechanical Engineering
in 2005 at Stony Brook and worked as a postdoctoral
fellow afterwards.
We wish Alfredo, Lorena, Jose and Yang the best!
These transitions mean a new generation of postdocs and
students will join Stony Brook in the coming years.
CTSR has recruited several new students and postdocs this year.
We are pleased to report that Dr. Yikai Chen from Shanghai
Institue of Ceramics has joined the group earlier this summer.
Dr. Dimitrios Zois from Greece will join in January
pending visa approval. They will both work on consortium
efforts.
Gopal Dwivedi was selected through a competitive process
to participate in the Stony Brook Provost’s graduate
student lecture series. He presented findings on the biomimetic
linkages between thermal sprayed ceramics and
nacre.
Claire Maxey, a recent mechanical engineering graduate
of Stony Brook, is participating in the Volvo Aero internship
program. She will spend a year in Trollhatten working within
the Volvo Aero thermal spray group from August of 2010 to
August of 2011.
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