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More than 35 years ago, Sermatech became
a pioneer in the turbomachinery protective coating industry with the introduction
of the SermeTel® family of coatings.
Since then, we have protected tens of thousands of pieces of ground turbomachinery
against the ravages of corrosion, erosion, fouling and oxidation, boosting
performance and saving millions of dollars in fuel, maintenance and replacement
costs for our customers.
We have developed specialty coatings for a wide |
range of conditions
to meet the needs of gas and steam turbine operators,
as well as compressor operators worldwide. We also have developed
innovative delivery systems like our Mobile Field Service Centers (MFSCs) that can provide protective
coating services for large turbine rotors, and associated components
and assemblies right at your location.
With a global network of facilities and our MFSCs, Sermatech can
coat ground turbomachinery virtually anywhere in the world.
**Download the NEW IGT Brochure**
Hot Section Cold Section Steam Turbine Centrifugal Compressors
Hot Section
Costly nickel, cobalt and stainless steel IGT hot section
components are under continuous bombardment in the severe gas path environment.
Oxidation, corrosion and erosion are continually eating away at performance
and can ultimately lead to service failure.
Sermatech coatings can protect these components and keep them running at high
performance for tens of thousands of additional hours. And to a turbine operator,
that translates to reduced repair costs, less downtime and more efficient operation.
SermAlcote™, our new slurry aluminizing process service for producing protective
coatings offers significant improvements in cost, quality and turntime over competitive
aluminizing processes, while meeting existing commercial specifications.
The new process offers an alternative to industrial pack and vapor-phase aluminizing
processes used for producing protective coatings on hot section components. SermAlcote
processes have been developed to meet common commercial aluminide process specifications
for aluminide coatings, platinum-modified aluminide coatings, and overaluminized
MCrAlY coatings.
SermaLoy™ J is a unique slurry applied aluminide diffusion coating specifically
designed for protection of hot section components. It is applied to the component
surface, then diffused. This results in a coating that adheres tightly to the
part surface and is very resistant to both low and high temperature hot corrosion
and oxidation.
SermaLoy 1515 is designed to protect components made of high-strength, low-chromium
nickel-base alloys extremely resistant to both high and low temperature (types
1 and 2) hot corrosion, as well as oxidation. And Sermaloy 1545 is designed specifically
to protect the inside cooling passages of turbine blades.
What’s more, Sermatech offers a complete line of pack aluminide coatings,
including platinum aluminides, in addition to a full range of thermal spray coating
systems tailored to the specific application. We also offer high velocity oxy
fuel (HVOF)- and Gator-Gard®-applied MCrAlY overlay, as well as specialized
Thermal Barrier Coatings (TBCs) designed for use on gas turbine vanes and nozzle
segments. And as with all thermal spray technologies, we use multi-axis robots
and automated systems to assure reproducibility and precise control of coating
thickness.
Cold Section
Run your turbines more efficiently and help avoid expensive
hot section replacement costs downstream by protecting your compressor
section components with SermeTel coatings.
The ultra-smooth, aerodynamic finish of SermeTel coatings
reduces fouling and corrosion, decreases fuel usage, and enhances compressor
efficiency – even in heavily pitted units. With more than 24 million operating
hours logged on industrial gas turbines, SermeTel – the
original aluminum-ceramic coating – has a proven track record.
Two of our state-of-the-art aluminum-ceramic coatings are SermeTel 5380DP and SermeTel
2F-1. SermeTel 5380DP is ideal for use on
components where surface finish is critical, such as compressor airfoils. SermeTel 2F-1 is well suited for turbine cases and disks.
SermeTel coatings are either Bill of Material or
offered as an option by all major industrial gas turbine manufacturers.
In addition, Sermatech’s thermal spray coatings
can help resist wear and provide clearance control. And, our Copper-Nickel-Indium
coatings prevent fretting wear on blade disks and help control clearance and
restore worn compressor disks.
Steam Turbine Coatings
 Solid particle erosion (SPE) is a performance degrading
condition that affects nearly 90% of the world's steam turbines. Often
caused by exfoliation from boiler tubing, SPE slowly eats away at critical
steam path components. Sermatech uses a variety of coating technologies
to combat SPE and corrosion on steam turbine rotors, diaphragms, buckets
and control valves.
Our Gator-Gard® chromium carbide MCrAlY coatings
are specifically designed for effective high-temperature
erosion control on components such as steam valve
plugs. The Gator-Gard process delivers a high-energy, tightly controlled plasma
spray that yields a hard, dense coating with high purity and bond strength. And
since Gator-Gard applied coatings need no heat treatment or curing, the process
is well suited for on-site applications. For steam turbine components operating
above 1200°F (649°C), Sermatech’s GG-CC-130 chromium carbide coating
has been proven successful in providing high temperature wear and erosion resistance.
And to protect against steam turbine corrosion and fouling,
our SermaLon® coating system provides excellent protection to 403
and 410 stainless steel substrates exposed to corrosive steam conditions
or low pH wet chloride environments.
Centrifugal Compressors
 Centrifugal compressors used in chemical and petrochemical
processing applications are often subject to fouling due to the
spontaneous formation of polymers in the gas stream.
Fouling increases energy losses caused by friction in the gas path, creates random
changes of pressure distribution within the gas path and reduces flow area. In
addition, excessive material buildup on a compressor rotor can throw it out of
balance and lead to fatigue loading, reduced component life and premature shutdowns.
The patented SermaLon® coating system, specifically designed to protect centrifugal
compressor rotating and stationary components against fouling and corrosion,
can keep your turbomachinery on-line longer by reducing fouling and maintaining
compressor performance.
An innovative three-part system, SermaLon consists of a sacrificial bond coat,
an intermediate inhibitive coat and an ultra-smooth top coat. This unique combination
provides an aerodynamically smooth, non-reactive, nonstick outer surface that
resists wetting and the fouling build-up it causes. In addition, the SermaLon
coating system provides an erosion barrier to wash oil as well as excellent resistance
to corrosion–all of which helps extend the time between outages.
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