Microstructure and oxidation behavior of in situ formed TaSi2–Si3N4 nanocomposite coating grown on Ta substrate

Yoon, Jin‐Kook; Kim, Gyeung-Ho; Kim, Han-Sung; Shon, In-Jin; Kim, Jae-Soo; Doh, Jung-Mann

doi:10.1016/j.intermet.2008.08.003

Cited by 14 publications

(3 citation statements)

References 28 publications

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“…Such coatings were deposited by magnetron sputtering of composite TaSi 2 -SiC targets in the atmosphere with varied nitrogen content, resulting in hardness up to 26 GPa, friction coefficient below 0.3 at temperatures above 600 • C, and heat resistance up to 800 • C [23]. The introduction of Si 3 N 4 into the TaSi 2 coatings allows for a substantial increase in oxidation resistance [24]. The Ta-Si-N coatings have high thermal stability up to 900 • C [25].…”

Section: Introductionmentioning

confidence: 99%

Structure, Oxidation Resistance, Mechanical, and Tribological Properties of N- and C-Doped Ta-Zr-Si-B Hard Protective Coatings Obtained by Reactive D.C. Magnetron Sputtering of TaZrSiB Ceramic Cathode

Kiryukhantsev-Korneev

Сытченко

Vorotilo

et al. 2020

Coatings

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Coatings in the Ta-Zr-Si-B-C-N system were produced by magnetron sputtering of a TaSi2-Ta3B4-(Ta,Zr)B2 ceramic target in the Ar medium and Ar-N2 and Ar-C2H4 gas mixtures. The structure and composition of coatings were studied using scanning electron microscopy, glow discharge optical emission spectroscopy, energy-dispersion spectroscopy, and X-ray diffraction. Mechanical and tribological properties of coatings were determined using nanoindentation and pin-on-disk tests using 100Cr6 and Al2O3 balls. The oxidation resistance of coatings was evaluated by microscopy and X-ray diffraction after annealing in air at temperatures up to 1200 °C. The reactively-deposited coatings containing from 30% to 40% nitrogen or carbon have the highest hardness up to 29 GPa and elastic recovery up to 78%. Additionally, coatings with a high carbon content demonstrated a low coefficient of friction of 0.2 and no visible signs of wear when tested against 100Cr6 ball. All coatings except for the non-reactive ones can resist oxidation up to a temperature of 1200 °C thanks to the formation of a protective film based on Ta2O5 and SiO2 on their surface. Coatings deposited in Ar-N2 and Ar-C2H4 demonstrated superior resistance to thermal cycling in conditions 20-T−20 °C (where T = 200–1000 °C). The present article compares the structure and properties of reactive and “standard-inert atmosphere” deposited coatings to develop recommendations for optimizing the composition.

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Section: Introductionmentioning

confidence: 99%

Structure, Oxidation Resistance, Mechanical, and Tribological Properties of N- and C-Doped Ta-Zr-Si-B Hard Protective Coatings Obtained by Reactive D.C. Magnetron Sputtering of TaZrSiB Ceramic Cathode

Kiryukhantsev-Korneev

Сытченко

Vorotilo

et al. 2020

Coatings

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“…Tantalum and its alloys are considered as promising candidates for high temperature structural applications due to the attractive combination of high strength, high melting point, low ductile-brittle transition temperature (DBTT) and good mechanical properties at elevated temperatures [1,2].However, their practical use is greatly limited by the poor oxidation resistance in air or oxygen at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Research on the Si-Ti High Temperature Oxidation-Resistant Coatings for Tantalum Alloys

Song

et al. 2013

AMR

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Si-Ti coatings were prepared on the surface of T-222 alloy by fused slurry method at different temperatures (1425-1500°C). Microstructure and composition of the coatings were characterized and analysed through scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), energy dispersive X-ray spectrometry (EDS) respectively. The coating fabricated at 1450°C exhibited excellent structure compatible with high temperature oxidation resistance. Its surface is relatively smooth with few holes and cracks and the main phase on the surface is (Ti, Ta)Si that possesses outstanding corrosion resistance. Moreover, the cross-sectional structure of the coating is smooth and compact which can effectively prevent O2 from permeation. The isothermal oxidation behaviors in pure O2 atmosphere at 1500°C for 2h finally demonstrate that the optimum coating temperature is 1450°C.

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“…The disilicide TiSi 2 features remarkably low electrical resistivity, high-temperature stability, and good corrosion resistance [6,7]. Like many ceramics/silicide composites [8][9][10], the TiN-Ti 5 Si 3 and/or TiSi 2 composites have been demonstrated to possess improved mechanical properties [11][12][13]. Beside the composite of TiN with silicides, the other material of particular interest for this work is the TiN-Si 3 N 4 composite.…”

Section: Introductionmentioning

confidence: 99%

Combustion synthesis of TiN–Ti silicide and TiN–Si3N4 composites from Ti–Si3N4 powder compacts in Ar and N2

Yeh¹,

Chen²

2009

Journal of Alloys and Compounds

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Microstructure and oxidation behavior of in situ formed TaSi2–Si3N4 nanocomposite coating grown on Ta substrate

Cited by 14 publications

References 28 publications

Structure, Oxidation Resistance, Mechanical, and Tribological Properties of N- and C-Doped Ta-Zr-Si-B Hard Protective Coatings Obtained by Reactive D.C. Magnetron Sputtering of TaZrSiB Ceramic Cathode

Structure, Oxidation Resistance, Mechanical, and Tribological Properties of N- and C-Doped Ta-Zr-Si-B Hard Protective Coatings Obtained by Reactive D.C. Magnetron Sputtering of TaZrSiB Ceramic Cathode

Research on the Si-Ti High Temperature Oxidation-Resistant Coatings for Tantalum Alloys

Combustion synthesis of TiN–Ti silicide and TiN–Si3N4 composites from Ti–Si3N4 powder compacts in Ar and N2

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