Incipient low-temperature formation of MAX phase in Cr–Al–C films

Crisan, O.; Crisan, A.

doi:10.1007/s40145-018-0265-5

Cited by 12 publications

(8 citation statements)

References 35 publications

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“…In this study, the column-free and denser microstructure of Cr 2 AlC MAX phase coatings deposited by HiPIMS is exclusively different from the structures reported previously [ 28 , 32 , 55 , 56 , 57 , 58 ]. The improved microstructure of the Cr 2 AlC MAX phase coatings is responsible for enhanced hardness and modulus (discussed later).…”

Section: Resultscontrasting

confidence: 80%

Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS

Qureshi

Tang

et al. 2021

Materials

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The high-power impulse magnetron sputtering (HiPIMS) technique is widely used owing to the high degree of ionization and the ability to synthesize high-quality coatings with a dense structure and smooth morphology. However, limited efforts have been made in the deposition of MAX phase coatings through HiPIMS compared with direct current magnetron sputtering (DCMS), and tailoring of the coatings’ properties by process parameters such as pulse width and frequency is lacking. In this study, the Cr2AlC MAX phase coatings are deposited through HiPIMS on network structured TiBw/Ti6Al4V composite. A comparative study was made to investigate the effect of average power by varying frequency (1.2–1.6 kHz) and pulse width (20–60 μμs) on the deposition rate, microstructure, crystal orientation, and current waveforms of Cr2AlC MAX phase coatings. X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM) were used to characterize the deposited coatings. The influence of pulse width was more profound than the frequency in increasing the average power of HiPIMS. The XRD results showed that ex situ annealing converted amorphous Cr-Al-C coatings into polycrystalline Cr2AlC MAX phase. It was noticed that the deposition rate, gas temperature, and roughness of Cr2AlC coatings depend on the average power, and the deposition rate increased from 16.5 to 56.3 nm/min. Moreover, the Cr2AlC MAX phase coatings produced by HiPIMS exhibits the improved hardness and modulus of 19.7 GPa and 286 GPa, with excellent fracture toughness and wear resistance because of dense and column-free morphology as the main characteristic.

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Section: Resultscontrasting

confidence: 80%

Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS

Qureshi

Tang

et al. 2021

Materials

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“…To date, many MAX phase thin films have been synthesized, particularly in the Ti-Si-C [8][9][10], Ti-Al-N [11][12][13][14], Ti-Al-C [15][16][17], Ti-Ge-C [18], Cr-Al-C [19,20], V-Al-C [21], and Nb-Al-C [22] systems; however, there have been few reports on the preparation of the Nb-Si-C system. Researchers have prepared Nb-Si-C thin films by magnetron sputtering from individual Nb, Si, and C targets and obtained a mixture of NbC, SiC, and NbSi phases.…”

Section: Introductionmentioning

confidence: 99%

Deposition of Nb-Si-C Thin Films by Radio Frequency Magnetron Sputtering

Liu

et al. 2021

Coatings

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Nb-Si-C thin films were deposited onto Si(001) substrates by radio frequency (RF) magnetron sputtering using individual Nb, Si, and C targets. The effects of varying the sputtering power on the phase composition of the new thin films were studied. The structure, chemical components, and morphology of the thin films were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy. The experimental results and first-principles calculations indicate that a new MAX phase (Nb4SiC3) can be synthesized at a sputtering power of 65 W. The four-point probe test showed that the resistivity of the film containing Nb4SiC3 phase was 0.99 μΩ·m. A nano-indentation test showed that the hardness of the film containing Nb4SiC3 phase was 15 GPa, and the elastic modulus was 200 GPa.

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“…The content of the second phase affected the microhardness and resistance of Ti 3 SiC 2 , and the higher the content was, the greater the microhardness was. Crisan and Crisan [23] deposited Cr-Al-C ternary MAX phase compound films on Si substrate by DC sputtering. The effects of substrate temperature and annealing in air on the crystallinity and oxidation of the films were investigated.…”

Section: Introductionmentioning

confidence: 99%

Highly conductive wear resistant Cu/Ti3SiC2(TiC/SiC) co-continuous composites via vacuum infiltration process

et al. 2020

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The MAX phase Ti 3 SiC 2 has broad application prospects in the field of rail transit, nuclear protective materials and electrode materials due to its excellent electrical conductivity, selflubricating properties and wear resistance. Cu-Ti 3 SiC 2 co-continuous composites have superior performance due to the continuous distribution of 3D network structures. In this paper, the Cu/Ti 3 SiC 2 (TiC/SiC) co-continuous composites are formed via vacuum infiltration process from Cu and Ti 3 SiC 2 porous ceramics. The co-continuous composites have significantly improved the flexural strength and conductivity of Ti 3 SiC 2 due to the addition of Cu, with the conductivity up to 5.73×10 5 S/m, twice as high as the Ti 3 SiC 2 porous ceramics and five times higher than graphite. The reaction between ingredients leads to an increase in the friction coefficient, while the hard reaction products (TiC x , SiC) lower the overall wear rate (1×10-3 mm 3 /(N•m)). Excellent electrical conductivity and wear resistance make co-continuous composites more advantageous in areas such as rail transit.

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Incipient low-temperature formation of MAX phase in Cr–Al–C films

Cited by 12 publications

References 35 publications

Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS

Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS

Deposition of Nb-Si-C Thin Films by Radio Frequency Magnetron Sputtering

Highly conductive wear resistant Cu/Ti3SiC2(TiC/SiC) co-continuous composites via vacuum infiltration process

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