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MCrAlY superalloys

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Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 101-106, May 24–28, 2021,
...Abstract Abstract In this paper, a diffusion kinetic model was applied to simulate the microstructure development in a MCrAlY-superalloy system at high temperatures. Both simulation and experimental results showed that γ+γ’ microstructure was obtained in the coatings due to Al depletion after...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 51-59, May 24–28, 2021,
... distinct heat treatments: first a solution heat treatment, followed by primary aging, and finally secondary aging. To achieve oxidation resistance, MCrAlY coatings are applied on the superalloy components as either environmental coatings or bond coats for thermal barrier coatings. In this study...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 277-284, September 15–18, 1997,
...Abstract Abstract Superalloy samples were coated with thermal barrier coatings (TBC). This TBC-system consisted of two layers. The first layer was a vacuum-plasma sprayed, corrosion resistant layer (MCrAlY) which also acted as a bond coat. The ceramic top layer was atmospheric-plasma sprayed...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 476-482, March 4–6, 2002,
...Abstract Abstract MCrAlY materials are widely used as coating materials operated under high temperature conditions owing to their excellent high temperature corrosion resistance. In this paper, the adhesive strength of high-velocity oxy-fuel (HVOF) MCrAlY coatings to superalloy substrate...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 635-641, May 8–11, 2000,
...Abstract Abstract Methodology to evaluate the adhesive strength between the MCrAlY alloy coating film and the Ni-base superalloy substrate was studied and proposed. By employing the double cantilever beam specimens which were taken from the CoNiCrAlY alloy coated Ni-base superalloy, the fatigue...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 654-659, March 4–6, 2002,
...Abstract Abstract In this paper, different methods for surface preparation are investigated before the MCrAlY adhesive layer is applied. Surface characteristics are analyzed and the adhesive layer is applied to surfaces consisting of nickel-alloyed superalloys using the low-pressure plasma...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 36-43, May 24–28, 2021,
... in thermal barrier dense layer of the deposit material [21-24]. Cold spraying of coatings (TBCs) to protect the underlying superalloy MCrAlY bond coats was increasingly reported in the past years component of the gas turbine engine against high temperature due to formation of a continuous TGO composed...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 385-390, May 8–11, 2000,
... stresses and the associated distortion. The purpose of this work is to determine the optimal descaling technique for Ni-base sheets with a thermal barrier coating. Test specimens were produced following industry procedures. Thin sheets (<3 mm) of Ni-base superalloy were plasma sprayed with a NiCrAlY...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 66-74, May 24–28, 2021,
...Abstract Abstract As a critical technology, thermal barrier coatings (TBC) have been used in both aero engines and industrial gas turbines for a few decades, however, the most commonly used MCrAlY bond coats which control air plasma sprayed (APS) TBC lifetime are still deposited by the powders...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 470-475, March 4–6, 2002,
... for pro- The need for higher efficiency of industrial gas tur- tection at high temperatures [4]. bines has led to continual increase of firing tempera- Development of MCrAlY coatings produced by high- tures, which places high demands to the construction velocity oxy-fuel (HVOF) process, has become very...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 603-608, May 8–11, 2000,
...Abstract Abstract Ni+Al, Ti+Al, NiCr+AI, and Cr+Al powders react exothermically in the heat zone of thermal spraying systems. Whether such reactions occur between aluminum and superalloy powders is the underlying question of this study. This paper describes composites of this nature...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1571-1575, May 25–29, 1998,
... for the as-sprayed MCrAlY coating while after the thermal cycling test, this values has decreased to 105 ±12 2 M.I. Wood, "Mechanical interactions between coatings (Xm (five measurements on five different places of the heat and superalloys under conditions of fatigue", Surface and affected area). Coatings Technology...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 900-904, March 4–6, 2002,
... (Approximately 300µm) MCrAlY TGO or CoNiCrAlY MCrAlYCeSi (approximately 100µm) 25µm Ni base superalloy (5mm) YSZ Fig. 1 Geomerty of cross-section of the tested speci- YSZ TGO CoNiCrAlY 150µm TGO a) MCrAlY+YSZ CoNiCrAlYCeSi YSZ 25µm TGO Fig. 3 Typical SEM images of cross- CoNiCrAlYCeSi 150µm section around...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 529-533, March 4–6, 2002,
... layers of superalloys, copper, and steel with the high frequency pulse detonation spray gun are shown in this paper. The advantages of the layers produced in this way are compared with those produced with conventional or cold spray processes. The result is interesting novel materials and surface coating...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1607-1611, May 25–29, 1998,
... a perturbation of the heat obtained coating corresponds to thick deposit and its transfer within the material. thickness can vary between 1 and 2.5 mm (figure 1). PLASMA-SPRAYED THERMAL BARRIER COATINGS Figure 1. Schematic of a typical specimen studied consist of an intermediate MCrAlY bond coat to protect...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 431-438, May 25–29, 1998,
... these superalloys the region of the HVOF free jet and the gas parameters used in cast or wrought forms owing to their brittleness. are C3H6(55Nl/min) + O2(300Nl/min) + N2 (20Nl/min). Accordingly, the application of thermal spray techniques to MCrAlY alloys are very useful and important to obtain their The alumina...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1645-1650, May 25–29, 1998,
... Physical Vapor Deposition (EB-PVD) techniques. All of the coatings consisted of an MCrAlY bond coat and a partially stabilized ZrO 2 -8%Y 2 O 3 (PSZ) top coat. The TBC coated pins (6.35 mm in diameter) were tested using gas temperatures ranging from 110CC to 1500°C. The pins were tested to failure under...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 231-235, March 4–6, 2002,
... storage, process inter- 4.1 Thermal Shock Tests changeability, and the monitoring of spear parts. This closed-loop control is also being utilized in powder Thermal shock tests have been done on 1.5-mm thick feeder designs. coatings that were applied on superalloy substrates with a MCrAlY bond coat...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 60-65, May 24–28, 2021,
... Plasma System experiments (DOE) approach would best enable the (LVPS) integrated with a Oerlikon Metco O3CV vacuum establishment of the operating window for the two systems. plasma gun for MCrAlY bond coat application and a Samples prepared were primarily evaluated for their SurfaceOne system integrated...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 1105-1116, May 8–11, 2000,
... Spray sprayed aluminum as sprayed, 2% Aluminum V porosity, unetched. (T9oooev) Copper V Alloys V Stainless Steels VV Superalloys Refractory VV Mtls. V Beryllium V 3.0 Properties Figure 2. Arc Sprayed structures, a. top left aluminum tank, b. bottom left 3.1 Aluminum aluminum sphere 152 mm diameter after...