The oxidation performance for Zr-doped nickel aluminide coating by composite electrodepositing and pack cementation

2017 ◽  
Vol 123 ◽  
pp. 103-115 ◽  
Author(s):  
Yuhua Zhou ◽  
Xiaofeng Zhao ◽  
Chunshan Zhao ◽  
Wei Hao ◽  
Xin Wang ◽  
...  
Keyword(s):  
Nickel Aluminide ◽  
Aluminide Coating ◽  
Pack Cementation ◽  
Oxidation Performance

Cyclic-Oxidation of RexOy-Modified Aluminide Coating

2012 ◽  
Vol 557-559 ◽  
pp. 1721-1726
Author(s):  
Yong Dong Wang ◽  
Yue Bo Zhou
Keyword(s):  
Composite Film ◽  
Cyclic Oxidation ◽  
Aluminide Coating ◽  
Pack Cementation ◽  
Reactive Element ◽  
Aluminide Coatings ◽  
Oxidation In Air

Reactive reactive element oxide RexOy (Re=Ce, Y)-modified aluminide coatings were developed by aluminizing the as-codeposited Ni-RexOy composite film using pack cementation method at 1100°C for 4 h. By comparison, aluminizing was also performed with the same condition on an as-deposited Ni film without RexOy particles. SEM/EDAX and TEM results indicated that the co-deposited CeO2 or Y2O3 particls were homogeneously dispersed in the finer-grain nanocrystalline Ni grains. The cyclic oxidation in air at 900°C indicated that the RexOy -modified aluminide coatings were profoundly spallation resistance as compared to the RexOy -free coatings due to the formation of a continuous adherent α-Al2O3 scale.

Increase in ductility of Pt-modified nickel aluminide coating with high temperature ageing

2016 ◽  
Vol 105 ◽  
pp. 505-518 ◽  
Author(s):  
Vladimir A. Esin ◽  
Vincent Maurel ◽  
Paul Breton ◽  
Alain Köster ◽  
Serge Selezneff
Keyword(s):  
High Temperature ◽  
Nickel Aluminide ◽  
Aluminide Coating ◽  
Temperature Ageing

Protective aluminide coating by pack cementation for Beta 21-S titanium alloy

2019 ◽  
Vol 160 ◽  
pp. 108165 ◽  
Author(s):  
N. Chaia ◽  
C.M.F.A. Cossu ◽  
L.M. Ferreira ◽  
C.J. Parrisch ◽  
J.D. Cotton ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Aluminide Coating ◽  
Pack Cementation

Phase Determination in Flame-sprayed ‘Nickel Aluminide’ Coating

Nature ◽  
1966 ◽  
Vol 209 (5024) ◽  
pp. 706-707 ◽  
Author(s):  
CLAËS I. HELGESSON
Keyword(s):  
Nickel Aluminide ◽  
Aluminide Coating ◽  
Phase Determination

scholarly journals Effect of Temperature and Time on Nickel Aluminide Coating Deposition

2018 ◽  
Vol 37 (4) ◽  
pp. 491-496 ◽  
Author(s):  
Ali Dad Chandio ◽  
Shahid Hussain Abro
Keyword(s):  
Nickel Aluminide ◽  
Linear Trend ◽  
Aluminide Coating ◽  
Chemical Vapor ◽  
Effect Of Temperature ◽  
Chemical Vapor Deposition Method ◽  
X Ray Diffraction ◽  
Initial Stage ◽  
Low Activity

The βNiAl coating was deposited onto Nickel based CMSX-4 superalloy by in-situ CVD (Chemical Vapor Deposition) method. Main focus of this contribution was to study the influence of aluminizing time and temperature on the microstructure and thickness of the coating; this was followed by examination by XRD (X-Ray Diffraction), electron microscope. Results suggest that an incremental variation in temperature alters the coating activities from HA (High Activity) to LA (Low Activity). This is exhibited by the resultant CT (Coating Thickness) since HA coatings are thicker than LA counterparts. The microstructure of the coating formed at low temperature (or HA ones) showed a large amount of α-Cr precipitates while one formed at high temperature (or LA ones) exhibited lower amounts of such precipitates. Moreover, incremental aluminizing time showed linear trend of CT at initial stage, thereafter (10 hrs) it leveled off. Whereas it does not affect microstructure of the coating

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