Isothermal oxidation behaviour of a gradient NiCoCrAlSiY coating deposited by arc ion plating on a Ni-based single crystal superalloy

2009 ◽  
Vol 51 (6) ◽  
pp. 1467-1474 ◽  
Author(s):  
C.Z. Xu ◽  
S.M. Jiang ◽  
Z.B. Bao ◽  
J. Gong ◽  
C. Sun
Keyword(s):  
Single Crystal ◽  
Isothermal Oxidation ◽  
Oxidation Behaviour ◽  
Single Crystal Superalloy ◽  
Arc Ion Plating ◽  
Ion Plating

Isothermal Oxidation of René N5 at 1150°C

2018 ◽  
Author(s):  
Megan Walker ◽  
Xiao Huang
Keyword(s):  
Single Crystal ◽  
Exposure Time ◽  
Bond Coat ◽  
Isothermal Oxidation ◽  
Oxidation Behaviour ◽  
Single Crystal Superalloy ◽  
Short Term ◽  
Alumina Layer ◽  
Spinel Layer ◽  
Oxide Spallation

In this study, single crystal superalloy René N5 was exposed in air at 1150 °C for up to 16 hours to evaluate the alloy’s short-term oxidation behaviour and the potential for developing a no-bond coat TBC system. The results showed that after 1 hour of exposure, a three layered oxide developed on the surface, consisting of spinel, Ta-containing oxide and alumina just above the substrate. After 4 hours of exposure, oxide spallation occurred; this became more pronounced after 16 hours. The oxide spallation took place between the top spinel layer and alumina layer, where Ta-rich oxide was more abundant. All samples tested for 0.5, 1, 2, 4 and 16 hours developed alumina near the substrate while the occurrence of NiO, spinel and Ta-oxides varied, depending upon the exposure time.

scholarly journals The Interdiffusion Behavior of NiCoCrAlYHf Coating Deposited by Arc Ion Plating on Carburized Ni-Based Single Crystal Superalloy

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7401
Author(s):  
Zun Chen ◽  
Jinyan Zhong ◽  
Shanglin Yang ◽  
Songmei Li ◽  
Jianhua Liu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Cyclic Oxidation ◽  
Oxidation Time ◽  
Single Crystal Superalloy ◽  
Outward Diffusion ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Refractory Elements ◽  
Carburized Layer ◽  
Interdiffusion Coefficients

In the present study, arc ion plating (AIP) was used to prepare a NiCoCrAlYHf coating (HY5 coating) on a carburized third-generation single-crystal superalloy DD10. The interdiffusion behavior of the carburized superalloy with an HY5 coating was investigated for a 1000 h oxidation time at 1100 °C. Carburization enhanced the interfacial bonding force and improved the microstructure of the NiCoCrAlYHf coating. An interdiffusion zone (IDZ) formed after a 300 h oxidation time, and the formation of a carburized layer effectively suppressed an inward diffusion of cobalt, aluminium, and chromium to the DD10 superalloy as well as an outward diffusion of nickel and refractory elements for instance rhenium and tungsten to the HY5 coating that occurred in static air at 1100 °C. The roles of the carburized layer in affecting thermal cyclic oxidation and element interdiffusion were studied. Subsequently, a modified form of the Boltzmann–Matano analysis was used to present the interdiffusion coefficients of aluminium.

Hot corrosion of arc ion plating NiCrAlY and sputtered nanocrystalline coatings on a nickel-based single-crystal superalloy

2017 ◽  
Vol 123 ◽  
pp. 27-39 ◽  
Author(s):  
Jinlong Wang ◽  
Minghui Chen ◽  
Yuxian Cheng ◽  
Lanlan Yang ◽  
Zebin Bao ◽  
...  
Keyword(s):  
Single Crystal ◽  
Hot Corrosion ◽  
Single Crystal Superalloy ◽  
Arc Ion Plating ◽  
Ion Plating

Oxidation behaviour of NiCoCrAlYHfZr coating on a fourth generation single crystal superalloy

2021 ◽  
pp. 109522
Author(s):  
S.B. Liu ◽  
W. Li ◽  
L.B. Fu ◽  
T.G. Wang ◽  
S.M. Jiang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Oxidation Behaviour ◽  
Single Crystal Superalloy ◽  
Fourth Generation

Effect of Hf Content on Oxidation Resistance of Single Crystal Superalloy at 1000°C

2014 ◽  
Vol 915-916 ◽  
pp. 562-566 ◽  
Author(s):  
Z.X. Shi ◽  
Shi Zhong Liu ◽  
M. Han ◽  
J.R. Li
Keyword(s):  
Grain Size ◽  
Single Crystal ◽  
Oxide Scale ◽  
Oxide Layer ◽  
Oxidation Resistance ◽  
Isothermal Oxidation ◽  
Single Crystal Superalloy ◽  
Ambient Atmosphere ◽  
Directionally Solidified ◽  
Better Than

The specimens of single crystal superalloy DD6 with 0.10% Hf and 0.47% Hf were prepared in the directionally solidified furnace. The effect of Hf content on the isothermal oxidation resistance of the second generation single crystal superalloy DD6 was studied at 1000°Cin ambient atmosphere. Morphology of oxides was examined by SEM, and their composition was analyzed by XRD and EDS. The experimental results show that the oxidation resistance of DD6 alloy with 0.47% Hf is better than that of the alloy with 0.10% Hf. The alloy with different Hf content all obeys parabolic rate law during oxidation for 100h at 1000°C. The increase of Hf content can promote the Al2O3 formation and decreases the proportion of NiO. The oxide grain size and the thickness of the oxide layer all reduce with increasing of Hf content. The oxide scale of the alloy with different Hf content is made up of an outer NiO layer with a small amount of Co3O4, inner Al2O3 and Cr2O3 layer with a small amount of TaO2.

scholarly journals Isothermal oxidation behavior of electrospark deposited NiCrAlY coatings on a Ni-based single-crystal superalloy

2019 ◽  
Vol 53 (3) ◽  
pp. 389-394
Author(s):  
C. Guo ◽  
T. Liang ◽  
F. Lu ◽  
Z. Liang ◽  
S. Zhao ◽  
...  
Keyword(s):  
Single Crystal ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Single Crystal Superalloy

scholarly journals Effect of interlayer design on friction and wear behaviors of CrAlSiN coating under high load in seawater

RSC Advances ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 5596-5607 ◽  
Author(s):  
Yuwei Ye ◽  
Zhiyong Liu ◽  
Wei Liu ◽  
Dawei Zhang ◽  
Yongxin Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Single Crystal ◽  
Friction And Wear ◽  
316L Stainless Steel ◽  
Single Crystal Silicon ◽  
High Load ◽  
Crystal Silicon ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Plating Technique

In this paper, CrAlSiN coatings with different interlayers (without interlayer, Cr interlayer, CrN interlayer and Cr/CrN interlayer) were successfully obtained on 316L stainless steel and single crystal silicon by multi-arc ion plating technique.

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