"Technology and Applications of Turbine Coatings"
Pre-Conference IGTI Workshop being held in conjunction with Turbo Expo 2012

Saturday, June 9, 2012
Bella Convention & Exhibition Center
Copenhagen, Denmark

Overview
Gas turbines use various coatings to improve the functionality and durability of components, in fact many modern gas turbines could not safely operate without their specialized coatings. Coating uses, materials, deposition processes and serviceability will be discussed. Several case studies will be presented to show the design process in action. Earn 7 Professional Development Hours (PDH’s) and receive a certificate of completion!

After completing the course the participants should be able to explain:

1. how coatings are used to maximize the durability of gas turbine components.
2. what coating materials are applied to what locations and why.
3. the various coating techniques as well as the advantages and challenges of those methods.
4. how to recognize normal and abnormal coating failure modes and end-of-life criteria.

Who Should Attend:
This tutorial is aimed at gas turbine owners, operators and maintenance personnel to allow them to appreciate the nature of coatings as an engineering design tool.

Course Outline:	Saturday, June 9, 2012 8:30 a.m. to 5:00 p.m.
Introduction	Where and Why Coatings are Applied to Gas Turbines
Part 1: Metallurgical concepts: how coatings work and compositions	Sealing enhancement coatings Wear protection coatings Oxidation and corrosion resistant coatings Heat resistant coatings Erosion resistant coatings
Part 2: Coating performance, life and degradation	Metallurgical damage mechanisms Coating specific damage mechanisms Lifeing methods and criteria Coating renewal and replacement
12:00 p.m. – 1:00 p.m.	Group Lunch
Part 3: Application technology	Paints Conversion coatings Diffusion coatings Thermal spray Chemical vapor deposition Physical vapor deposition Cost, complexity, and masking issues Quality control and assessment
5:00 p.m.	Wrap-up and Evaluation

Instructors

Douglas R. Nagy graduated from McMaster University's Ceramic Engineering program. He joined Liburdi Turbine Services, Inc. in 1987. His duties initially included research and development for new coatings for the protection of both the hot and cold sections of gas turbine engines. During the initial work on the advanced aluminide based coatings systems he was responsible for designing a high temperature CVD reactor, he then started work on PVD titanium nitride coatings for cold section components. Doug was responsible for designing an Ion Plating coating process to deposit ceramic layers for erosion protection. He was responsible for overseeing the commercialization of that process with two major manufacturers, and several users. The coating is currently in production. As project engineer, he was tasked to design coating systems and sub-systems within a multi-disciplinary team. He has also designed numerous furnaces, mechanical test equipment and instrumentation packages for his own and other research projects at Liburdi Engineering. More recent projects have been using ceramic reinforced metal matrix composites for wear protection of turbine blades and vanes. This activity has resulted in the qualification of two products, LAT and LZN for new part production. LZN has also been used as a repair material and is currently undergoing flight testing. Doug’s newest program was to oversee the installation and operation of APS and HVOF thermal spray systems for turbine airfoil coatings. Active collaborative research continues with the NRC-IMI Surftech consortium. Purush Sahoo earned his bachelor's degree (with Honors) in Metallurgical Engineering from the Indian Institute of Technology, in India. He obtained his Ph.D. in Metals Science & Engineering from Pennsylvania State University, in 1988, specializing in welding metallurgy. He spent two years at Drexel University (Philadelphia) developing innovative processes for Metal Matrix Composites and licensing it to ALCOA. He began his industrial career with Sermatech International where his primary responsibilities included developing coatings and processes, including the Micro-PTA Metbond Process. He was also the Principal Investigator on the ATS (Advanced Turbine System) TBC (Thermal Barrier Coating) program for Westinghouse. After seven years, he joined, as Manager of Coatings Development, with Tafa (now, Praxair-Tafa) in Concord, NH, where his duties included coatings, materials, and equipment development. He then went to Cincinnati Thermal Spray where his responsibilities included strategic planning for company growth goals and development of thermal spray and dry film lubrication business. He then served at Sulzer Hickham where he was responsible for developing and applying advanced coatings on F-Technology gas turbine components. He subsequently left Hickham to start a coating services company in early 2006. The company, American Surface Modifications, is located in Houston and offers the most advanced, state-of-art thermal spray and diffusion coatings to the turbomachinery industry.