Aviation Coating Applications for Gas Turbine Engines Creative2:Clients:Praxair:5700-22403De-archive jobs for client disc:Output:5700-19332 AviationCoatingApplic_Gas Turbine_v09:5700-19332 AviationCoatingApplic_Gas Turbine_v09 Folder:5700-19332 AviationCoatingApplic_Gas Turbine_v09.indd December 17, 2012 2:53 Page PM 1 Coating Applications for Gas Turbine Engines Afterburner Section (not illustrated) Combustion Section Bearings & Accessories Turbine Section Compressor Section www.praxairsurfacetechnologies.com Creative2:Clients:Praxair:5700-22403De-archive jobs for client disc:Output:5700-19332 AviationCoatingApplic_Gas Turbine_v09:5700-19332 AviationCoatingApplic_Gas Turbine_v09 Folder:5700-19332 AviationCoatingApplic_Gas Turbine_v09.indd December 17, 2012 2:53 Page PM 2 Afterburner Section (not illustrated) Part Name Coated Area Typical Coating Type Typical Mating Surface Typical Objective of Coating Afterburner Actuator Piston Rod O.D. of rod Tungsten carbide LW-1N40 Cast iron seal rings Sliding, fretting wear resistance Afterburner Combustion Interior surface Thermal barrier LTB-8 Hot gases Thermal barrier Chamber Liner Afterburner Fuel Pump Impeller Bearing journals Tungsten carbide LW-1N40 Seal Sliding wear resistance Afterburner Nozzle Support Bearing surfaces Chrome carbide LC-1B, LC-18 Self-mating, coated Fretting wear resistance Assembly nozzle segments Afterburner Seals, Flaps Bearing surfaces Chrome carbide LC-1B, LC-18 Self-mating, coated Fretting wear resistance and Nozzle Segments bearing surfaces Afterburner Seals, Flaps Flame impingement Thermal barrier LTB-8B Hot gases Thermal barrier and Nozzle Segments surfaces Afterburner Spray Bars O.D. bearing surfaces Chrome carbide LC-1B Cobalt alloy bushing Fretting resistance Afterburner Spray Bars Nozzle ring SermaLoyE slurry aluminide Hot exhaust gases High-temperature (Afterburner Tubes) oxidation resistance Combustion Section Part Name Coated Area Typical Coating Type Typical Mating Surface Typical Objective of Coating Combustion Chamber Assembly, Interior surfaces Thermal barrier, LTB-8, LTB-12, Hot gases Thermal barrier Liners and Domes LTB-13, LTB-16, TribometT MCrAlY Combustion Chamber O.D. (non-gas path) SermeTelT 2241 Al-ceramic coat- Ambient environment Corrosion resistance Cases surfaces ing; SermaLoy J slurry aluminide Combustion Chamber I.D. gripping surface Chrome carbide LC-1B, LC-18, Self-mating, coated combustion Fretting wear resistance Clamp TribometT T104CS chamber liner O.D. Combustion Chamber O.D. surface Chrome carbide LC-1B, TribometT Self-mating, coated combustion Fretting wear resistance Liner T104CS chamber clamp I.D. Combustion Chamber Bearing surfaces Tungsten carbide LW-1N40; Self-mating, coated bearing Fretting wear resistance Positioning Pin Chrome carbide LC-1B surfaces Combustion Chamber I.D. bearing surfaces Chrome carbide LC-1B, LC-18 Self-mating, coated liners and Fretting wear resistance Support Assembly guides Fuel Nozzle Nut O.D. bearing surfaces Chrome carbide LC-1B, LC-18 Self-mating, coated I.D. of swirler Fretting wear resistance Fuel Nozzle Nut Threads on I.D. Copper-nickel-indium LCN-1 Threads on fuel manifold Preventing nozzle nut loosening Fuel Nozzle Nut Threads on I.D. SermaLoyE J slurry aluminide Hot air, fuel Oxidation and sulphidation resistance Fuel Swirler I.D. bearing surfaces Chrome carbide LC-1B, LC-18 Self-mating, coated O.D. Fretting wear resistance Thermocouple Probes Gas path SermaLoyE J slurry aluminide Hot gases Oxidation and sulphidation resistance Bearings & Accessories Part Name Coated Area Typical Coating Type Typical Mating Surface Typical Objective of Coating Bearing Housings & Seal I.D. sealing surfaces Chrome carbide LC-1C; Carbon rings Sliding wear resistance Assemblies Tungsten carbide LW-1 Bearing Rings Bearing surfaces Titanium nitride 24K Housings Fretting wear resistance Bearing Seal Housings I.D. secondary Tungsten carbide LW-1N30, Tungsten carbide coated Fretting wear resistance seal area LW-1N40 seal rings Bearing Seal Seats & Spacers Annular sealing face Chrome carbide LC-1C; Carbon-graphite seal Sliding wear (both surfaces) Tungsten carbide LW-1 resistance Bearing Supports Non-contact areas SermeTelT W, 2F-1, 5380, Corrosion resistance 5380DP Al-ceramic coatings – Gearbox Support Pins, Bushings Bearing surfaces Tungsten carbide LW-1N40 Self-mating, coated bearing Fretting resistance & Lugs surfaces Labyrinth Seal Fins & Seal Teeth Knife-edge tips Tungsten carbide LW-1N40; Porous metal, honeycomb Rubbing wear resistance and face chrome carbide LC-1B; or abradable coatings aluminum oxide LA-2, LA-21; TribometT CBN abrasive Main Shaft Bearings Bearing shoulders Titanium nitride 24K Bearing cage, silver-plated Sliding wear resistance Oil Pump Gears O.D. bearing journals Tungsten carbide LW-1N40 Bronze bushing or Fretting wear resistance aluminum housing Oil Scavenge & Breather Tubes O.D. sealing surfaces Tungsten carbide LW-1N40 Steel Fretting wear resistance Creative2:Clients:Praxair:5700-22403De-archive jobs for client disc:Output:5700-19332 AviationCoatingApplic_Gas Turbine_v09:5700-19332 AviationCoatingApplic_Gas Turbine_v09 Folder:5700-19332 AviationCoatingApplic_Gas Turbine_v09.indd December 17, 2012 2:53 Page PMCreative2:Clients:Praxair:5700-22403 3 De-archive jobs for client disc:Output:5700-19332 AviationCoatingApplic_Gas Turbine_v09:5700-19332 AviationCoatingApplic_Gas Turbine_v09 Folder:5700-19332 AviationCoatingApplic_Gas Turbine_v09.indd December 17, 2012 2:53 Page PM 4 Turbine Section Part Name Coated Area Typical Coating Type Typical Mating Surface Typical Objective of Coating Air Sealing Rings Annular surfaces Chrome carbide LC-1B, LC-18; Self-mating, coated annular Fretting wear resistance TribometT T104CS, cobalt services alumina LCO-17 Exhaust Fairing Bearing surfaces Tungsten carbide LW-1N40 Self-mating, bearing Fretting wear resistance Pins & Bushings surfaces Outer Airseals & I.D. sealing surface Cobalt alloy LCO-22, Blade tip Rub-tolerant surface for sealing; Turbine Shrouds Mar M-509, thermal barrier thermal barrier with erosion LTB-8, LTB-13 resistance Outer Airseals & Inside diameters Chrome carbide LC-1B Air flow Erosion resistance (against Turbine Shrouds catalyst particles in expanding gases) Outer Airseals & Gas path surfaces Aluminides - SDC Hot gases Oxidation and sulphidation Turbine Shrouds 1544,1567,1572,1573 resistance Thrust Frame Bearing surfaces Tungsten carbide LW-1N40 Self-mating, bearing Fretting wear resistance Boss & Clevis surfaces Turbine Blades Unshrouded tip Cobalt alumina LCO-17; Honeycomb, porous metal, Rubbing wear resistance TribometT CBN abrasive nickel-base alloy Turbine Blades Top side of shrouded tip Cobalt alumina LCO-17 Outer airseal Rubbing wear resistance Turbine Blades Shroud Z-notches and Chrome carbide LC-1B; cobalt Self-mating, interlocking Fretting wear resistance above knife-edge seals alumina LCO-17, LCO-19, shrouds 1000° F (538° C) L-10; Tribaloy* LDT-800 Turbine Blades Shroud Z-notches and Tungsten carbide LW-1N40 Self-mating, interlocking Fretting wear resistance below knife-edge seals shrouds 1000° F (538° C) Turbine Blades Underplatform Underside of platform PWA 545 slurry, cathodic arc Hot gases Hot corrosion, SCC resistance coatings, chromizing and chrome aluminizing Turbine Blade Tips Turbine blade tip TribometT MCrAlY and abrasive Abradable seal material Sealing at tip of turbine blade tip, STCC ceramic cutting tip Turbine Blades & Vanes Airfoil & platform Cobalt alloy LCO-22, LCO-29; Hot gases Oxidation and sulphidation gas path surfaces Thermal barrier LTB-8, LTB-13, resistance; thermal barrier LTB-19; MCrAlY overlays; EBPVD, EBPVD YSZ; Platinum aluminide, Vapor phase aluminide (PWA 273, 275); Pack aluminides (PWA 44, 73, 252 RPS 320); Pack chromide (F50TF37, PWA 70); SermaLoyE J slurry aluminides, TribometT MCrAlY Turbine Blades & Vanes Internal cooling passages Vapor phase aluminide; Hot gases Internal cooling passage SermAlcoteE 2500, 2525 slurry oxidation and corrosion aluminide, PWA 273 slurry, pack resistance aluminides where access permits; also vapor chromizing Turbine Blades & Vanes Damaged coating on SermaLoyE J slurry aluminide Hot gases Repair of protective airfoil & platform gas coating layers path surfaces Turbine Blades & Vanes Airfoil & platform surfaces Cobalt alloy LCO-22, LCO-29; Hot gases Oxidation and sulphidation Thermal barrier LTB-8, LTB-13, resistance; thermal barrier LTB-19; MCrAIY Overlays; EBPVD; Platinum aluminide; Vapor phase aluminide Turbine Brush Seals Airfoil & platform surfaces Chrome carbide LC-1B Hot gases Erosion resistance (against catalyst particles in expanding gases) Turbine Brush Seals Bearing surfaces Chrome carbide LC-1B, LC-1H Seal bristles Sliding & brush wear resistance Turbine Stator Shrouds Shroud flanges Chrome carbide LC-1B, LC-18; Self-mating, coated vane Fretting wear resistance Cobalt alumina LCO-17, LCO-19, inner-foot pads L-103 Turbine Vanes Inner-foot pads Chrome carbide LC-1B, LC-18; Self-mating, coated Fretting wear resistance Cobalt alumina LCO-17, LCO-19, stator shroud flanges L-103 Turbine Exhaust Case Gas path surfaces SermeTelT 2241 Al-ceramic Corrosion resistance coatings – Turbine Nozzle Case Gas path surfaces SermeTelT 2241 Al-ceramic Corrosion resistance coatings – Creative2:Clients:Praxair:5700-22403De-archive jobs for client disc:Output:5700-19332 AviationCoatingApplic_Gas Turbine_v09:5700-19332 AviationCoatingApplic_Gas Turbine_v09 Folder:5700-19332 AviationCoatingApplic_Gas Turbine_v09.indd December 17, 2012 2:53 Page PMCreative2:Clients:Praxair:5700-22403