scholarly journals Structure of Pd-Zr and Pt-Zr modified aluminide coatings deposited by a CVD method on nickel superalloys

2020 ◽  
Vol 57 (05) ◽  
pp. 343-354 ◽  
Author(s):  
M. Pytel ◽  
T. Tokarski ◽  
M. Góral ◽  
R. Filip
Keyword(s):  
Nickel Superalloys ◽  
Cvd Method ◽  
Aluminide Coatings

The Influence of Surface Preparation Method on Microstructure of HF-Modified Aluminide Coatings Deposited by CVD Method on Rene 80 and MAR M-247 Nickel Superalloys

2016 ◽  
Vol 844 ◽  
pp. 177-180
Author(s):  
Ryszard Filip ◽  
Maciej Pytel ◽  
Andrzej Nowotnik
Keyword(s):  
Vapour Deposition ◽  
Base Alloy ◽  
Aluminide Coating ◽  
Chemical Vapour ◽  
Surface Preparation ◽  
Substrate Thickness ◽  
Nickel Superalloys ◽  
Average Amount ◽  
Cvd Method ◽  
Aluminide Coatings

In the article the hafnium modified aluminide coatings deposited using chemical vapour deposition (CVD) method were analyzed. The influence of surface treatment (grinding, sandblasting with different pressures) on microstructure of coatings were described. The Re 80 and M-247 nickel superalloys were used as substrate. Thickness of the obtained aluminide coating was in the range 32-45 mm on Re 80 and 40-45 mm on M-247 respectively. The average amount of Al in the additive layer was 22-24 wt% on Re 80 and about 21 wt % on M-247 base alloy. The total amount of hafnium in coatings did not exceed 2.5 wt % - usuallly below 0.5 wt %. The conducted research has shown that there is no strong influence of surface preparation methodology on microstructure of aluminide coatings obtained by CVD method.

Microstructure Investigation of Aluminide Coatings after Platinum Modification Deposited by CVD Method on Inconel 713 LC Ni-Base Superalloy

2011 ◽  
Vol 409 ◽  
pp. 883-888
Author(s):  
M. Yavorska ◽  
Jan Sieniawski ◽  
Ryszard Filip ◽  
Tadeusz Gancarczyk
Keyword(s):  
Diffusion Coating ◽  
Diffusion Treatment ◽  
Cvd Method ◽  
Aluminide Coatings ◽  
Heat Treated ◽  
Two Phases ◽  
Electroplating Process ◽  
Low Activity ◽  
Platinum Electroplating ◽  
Base Superalloy

In the present study, microstructure investigation of aluminide coatings after platinum modification deposited by CVD method on Inconel 713 LC Ni-base superalloys were performed. The platinum coatings 3 and 7 m thick were deposited by electroplating process. The diffusion treatment of platinum electroplating coatings at the temperature 1050 °C was carried out for 2h. The low-activity CVD aluminizing of heat treated coatings at the temperature 1050 °C was conducted for 8 h. On the grounds of the obtained results it was found that microstructure of diffusion treated platinum electroplating coatings 3 m and 7 m thick consisted of two phases: γ-Ni and (Al0.25Pt0.75)Ni3. The low activity CVD aluminizing of diffusion treated platinum electroplating coatings 3 and 7 m thick enables the diffusion coating obtaining. The main constituent of aluminide coatings was (Ni,Pt)Al phase.

The Oxidation Resistance of Nonmodified and Zr-Modified Aluminide Coatings Deposited by the CVD Method

2015 ◽  
Vol 227 ◽  
pp. 361-364
Author(s):  
Ryszard Filip ◽  
Maryana Zagula-Yavorska ◽  
Maciej Pytel ◽  
Jolanta Romanowska ◽  
Mateusz Maliniak ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Oxidation Resistance ◽  
Protective Coating ◽  
Aluminide Coating ◽  
Nickel Superalloy ◽  
Cvd Method ◽  
Aluminide Coatings ◽  
Eds Analysis ◽  
Nial Phase

The aim of the present work was to determine the influence of chemical composition of the protective coating on the oxidation resistance of the protected alloy. Zirconium modified and nonmodified aluminide coatings were deposited on the MAR M200 nickel superalloy by the CVD method. The oxidation tests were conducted at 1100°C into 23 hour in the air. The chemical composition (EDS) analysis was performed. The kinetic of oxidation of zirconium modified and nonmodified aluminide coatings was similar. Oxides inclusions called pegs were observed on the surface of oxidized aluminide coating. HfO2 oxide is more stable than Al2O3 oxide, hafnium atoms can replace aluminum atoms in Al2O3 oxides. This phenomena let to stabilize NiAl phase and increase of oxidation resistance of aluminide coating.

scholarly journals Degradation of Aluminide Coatings Deposited on Nickel Superalloys

2016 ◽  
Vol 136 ◽  
pp. 346-352 ◽  
Author(s):  
Marta Kianicová ◽  
Ján Kafrík ◽  
Jaroslav Trník
Keyword(s):  
Nickel Superalloys ◽  
Aluminide Coatings

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

2013 ◽  
Vol 197 ◽  
pp. 95-100 ◽  
Author(s):  
Andrzej Nowotnik ◽  
Marek Góral ◽  
Maciej Pytel ◽  
Kamil Dychtoń
Keyword(s):  
Hydrogen Chloride ◽  
Thermodynamic Analysis ◽  
Coating Thickness ◽  
Substrate Material ◽  
Microstructure Analysis ◽  
Preliminary Results ◽  
Cvd Method ◽  
Aluminide Coatings ◽  
Deposition Parameters

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.

scholarly journals Zirconium influence on microstructure of aluminide coatings deposited on nickel substrate by CVD method

2013 ◽  
Vol 36 (6) ◽  
pp. 1043-1048 ◽  
Author(s):  
JOLANTA ROMANOWSKA ◽  
MARYANA ZAGULA-YAVORSKA ◽  
JAN SIENIAWSKI
Keyword(s):  
Nickel Substrate ◽  
Cvd Method ◽  
Aluminide Coatings
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