High-temperature oxidation and hot corrosion of Cr2AlC

Lin, Zhijun; Li, M. S.; Wang, Jiemin; Zhou, Yanchun

doi:10.1016/j.actamat.2007.07.024

Cited by 305 publications

(207 citation statements)

References 33 publications

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“…An indirect support of this conclusion is that the Young's modulus measured for Cr 2 AlC in Ref. [56] is significantly lower than other reports [53,57] on the same material.…”

Section: It Is Then Assumed That a Random Solid Solution Is Obtained contrasting

confidence: 33%

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Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Cabioc’h¹,

Eklund²,

Mauchamp³

et al. 2013

Journal of the European Ceramic Society

108

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“…An indirect support of this conclusion is that the Young's modulus measured for Cr 2 AlC in Ref. [56] is significantly lower than other reports [53,57] on the same material.…”

Section: It Is Then Assumed That a Random Solid Solution Is Obtained contrasting

confidence: 33%

“…c) The shear modulus of Cr 2 AlC is reported to be 102 GPa [56], 116 GPa [53], and 121 GPa [57]. Even though there is some spread in these experimental data, it is clear that the shear modulus of Cr 2 AlC is significantly higher than that of Cr 2 GeC at ≈ 80 GPa [55].…”

Section: It Is Then Assumed That a Random Solid Solution Is Obtained mentioning

confidence: 77%

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Cabioc’h¹,

Eklund²,

Mauchamp³

et al. 2013

Journal of the European Ceramic Society

108

View full text Add to dashboard Cite

show abstract

“…Hot corrosion of MAX phases in molten salts was also reported by literatures [13][14][15][16]. For instance, Cr 2 AlC exhibits exceptionally good hot corrosion resistance against molten Na 2 SO 4 salt due to the formation of a protective Al 2 O 3 -rich scale at 800-1300 ℃ in air [7]. It was reported that Ti 3 SiC 2 suffers serious hot corrosion attack in the mixture of Na 2 SO 4 -NaCl melts if the concentration of Na 2 SO 4 is higher than 35 wt% [14].…”

Section: Introductionmentioning

confidence: 85%

“…In recent decades, a significant number of literatures have reported the oxidation of MAX phases at high temperature [3][4][5][6][7][8][9][10][11][12]. For example, Ti 3 AlC 2 has excellent oxidation resistance, which is attributed to the formation of two-layer dense and adherent passivating films.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of Ti3AlC2 in molten KOH at 700 °C

Sun

Zhou

et al. 2013

J Adv Ceram

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This paper investigated the corrosion behaviors of Ti 3 AlC 2 at 700 ℃ in molten KOH with various mass ratios. If the mass ratio of KOH:Ti 3 AlC 2 ≤2, Ti 3 AlC 2 can resist KOH hot corrosion in 2 h. Ti 3 AlC 2 suffered serious corrosion attack if the mass ratio≥3. The main compositions of corroded samples were amorphous graphite and potassium titanates (K 2 O·nTiO 2 ). If the samples were washed by acid and dried, potassium titanates could decompose to K 2 O and amorphous rutile. Based on the experimental results, a corrosion mechanism of Ti 3 AlC 2 in molten KOH was proposed.

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“…They are nanolamellas with M n+1 AX n (n is 1, 2, or 3) chemical formula, where M is an early transition metal, A is an A-group element from the periodic table and X is either carbon or nitrogen [1]. These compounds are known for their low density [1], high stiffness [2,3], superior thermal shock resistance [1,4], damage tolerance [5,6], self-healing behavior [7,8], significant electrical conductivity [4,9], and erosion [10], oxidation [11][12][13][14][15][16] and hot corrosion resistance [6,17]. Moreover, M n+1 AX n phases have been identified as promising candidates for hydrogen storage applications [18] along with other materials [19,20].…”

Section: Introductionmentioning

confidence: 99%

Sputtering Power Effects on Growth and Mechanical Properties of Cr2AlC MAX Phase Coatings

Naveed

Obrosov

Żak

et al. 2016

Metals

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Abstract:Coating growth and mechanical properties of nanolamellar Cr 2 AlC coatings at various sputtering power were investigated in the present study. Cr 2 AlC coating was deposited on the IN 718 superalloy and (100) Si wafers by DC magnetron sputtering at different sputtering powers. The structure and properties were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nanoindentation. It was found that coatings had columnar structure with nanocrystalline substructure. Deposition rate increased with the sputtering power. XRD results showed the presence of the Cr 2 AlC MAX phase, intermetallic AlCr 2 and Cr 7 C 3 carbide phases, along with the change in preferential coating growth orientation. TEM observations confirmed the occurrence of these phases, and the SAED patterns demonstrated significant texture of the coatings. Hardness values were measured in the range between 11-14 GPa, showing a slight increase with the sputtering power.

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High-temperature oxidation and hot corrosion of Cr2AlC

Cited by 305 publications

References 33 publications

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Tailoring of the thermal expansion of Cr2(Alx,Ge1−x)C phases

Corrosion behavior of Ti3AlC2 in molten KOH at 700 °C

Sputtering Power Effects on Growth and Mechanical Properties of Cr2AlC MAX Phase Coatings

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