Thermal spraying of transition metal aluminides: An overview

Cinca, N.; Guilemany, J.M.

doi:10.1016/j.intermet.2012.01.020

Cited by 92 publications

(26 citation statements)

References 124 publications

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“…Thermal plasma processing is one of the most powerful technologies used for synthesizing of wide varieties of advanced materials including nanocrystalline metallic [40] and ceramic [41] materials that possess unique and unusual properties. This process is characterized by the application of high temperature in the range of 1,700 C to about 30,000 C [41].…”

Section: Thermal Plasma Processingmentioning

confidence: 99%

Introduction

El‐Eskandarany

2015

Mechanical Alloying

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Section: Thermal Plasma Processingmentioning

confidence: 99%

Introduction

El‐Eskandarany

2015

Mechanical Alloying

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“…However, iron aluminide corrosion resistance extends to temperatures at which these alloys exhibit limited or poor mechanical strength. Therefore, in many cases, they may be better utilized as clads or coatings for anti-corrosion protection, owing to their limited strength at elevated temperatures (Ref [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hot Treatment on Composition and Microstructure of HVOF Iron Aluminide Coatings in Na2SO4 Molten Salts

et al. 2019

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The paper deals with the hot corrosion performance of FeAl base intermetallic HVOF coatings in molten Na 2 SO 4 at 850°C in an isothermal process over the span of 45 h under static conditions. The test was validated with electron microscopy and compositional analyses in the cross-section area, as well as x-ray diffraction techniques. All the coatings were characterized by Al-depleted regions, intersplat oxidation and different stoichiometric ratios of iron aluminides. The results were discussed in relation to the formation of oxide scales on the surface after exposition to corrosive media, as well as heterogeneity and defects of the sprayed coatings. The Fe40Al (at.%) powder showed quite uniform phase distribution after spraying and preserved its integrity after corrosion test; the FeCr-25% ? FeAl-TiAl-Al 2 O 3 (wt.%) and Fe46Al-6.55Si (at.%) powders exhibited interface oxidation, with localized corrosion attacks proceeding through particle boundaries and microcrack networks with no evidence of Na and S penetration. Fe x Al y alloys are susceptible to accelerated damage and decohesion of the coating, whereas the formation of sulfides is observed at certain points.

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“…The particular interest lies in the FeAl, CoAl, and NiAl * E-mail: bdoummi@yahoo.fr transition metal (TM) aluminides, which possess a number of desirable physical and mechanical properties, such as high melting point, low density, good thermal conductivity, excellent high-temperature strengths, oxidation and corrosion resistance [4,5], and interesting optical [6] and magnetic properties [1,7], which make them promising for the high-temperature structural applications [2,[8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Very interesting are the earlier first-principle studies [12][13][14][15][16][17][18][19][20][21][22][23][24][25] and the recent theoretical study [26] that analyzed their phase stability, elastic constants, electronic structure, phonon frequencies, and magnetic properties. In addition, the recent experimental studies that investigated the thermal conductivity for combustion synthesis of CoAl and NiAl [4], and the thermal spraying in the TiAl, FeAl, and NiAl [5] are also worth mentioning.…”

Section: Introductionmentioning

confidence: 99%

First-principle investigations of structural and electronic properties of TMAl (TM = Fe, Co, and Ni) transition metal aluminides

Doumi

Mokaddem

Ishak-Boushaki

et al. 2015

Materials Science-Poland

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In the present work, we have investigated the structural and electronic properties of TMAl (TM = Fe, Co, and Ni) transition metal aluminides in the B2 structure, using first-principle calculations of the density functional theory (DFT) based on the linearized augmented plane wave method (FP-LAPW) as implemented in the WIEN2k code, in which the energy of exchange and correlation are treated by the generalized gradient approximation (GGA), proposed in 1996 by Perdew, Burke and Ernzerhof (PBE). The ground state properties have been calculated and compared with other calculations, and the electronic structures of all FeAl, CoAl, and NiAl compounds exhibited a metallic behavior. It was depicted that the density of states is characterized by the large hybridization between the s-p (Al) and 3d (Fe, Co, and Ni) states, which creates the pseudogap in the region of anti-bonding states. Moreover, the band structures of FeAl, CoAl, and NiAl are similar to each other and the difference between them is in the energy level of each band relative to the Fermi level.

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Thermal spraying of transition metal aluminides: An overview

Cited by 92 publications

References 124 publications

Introduction

Introduction

The Effect of Hot Treatment on Composition and Microstructure of HVOF Iron Aluminide Coatings in Na2SO4 Molten Salts

First-principle investigations of structural and electronic properties of TMAl (TM = Fe, Co, and Ni) transition metal aluminides

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