Influence of Coatings Deposition Parameters on Microstructure of Aluminide Coatings Deposited by CVD Method on Ni-Superalloys

Andrzej Nowotnik; Marek Goral; Maciej Pytel; Kamil Dychtoń

doi:10.4028/www.scientific.net/SSP.197.95

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Influence of Coatings Deposition Parameters on Microstructure of Aluminide Coatings Deposited by CVD Method on Ni-Superalloys
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Influence of Coatings Deposition Parameters on Microstructure of Aluminide Coatings Deposited by CVD Method on Ni-Superalloys

Abstract:

The paper presents the preliminary results of technological tests of aluminizing using a new BPX Pro 325 S CVD equipment. Nickel based cast superalloys: IN 738 and MAR M200+Hf were used as a substrate material. The aluminizing processes with different parameters - pressure, HCl flow and time - were conducted. Microstructure analysis showed coatings whose thickness didn't exceed 20 µm. The authors showed that the changes of parameters values in the analyzed range weakly influenced the coating thickness (about 1-2 µm). It was proven, that it was necessary to decrease the flow of hydrogen chloride and perform the thermodynamic analysis.

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Periodical:

Solid State Phenomena (Volume 197)

Pages:

95-100

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.197.95

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Online since:

February 2013

Authors:

Andrzej Nowotnik, Marek Goral, Maciej Pytel, Kamil Dychtoń

Keywords:

Alubinide Coatings, Aluminizing, CVD, Superalloy, Turbine Blade

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