High temperature phase changes and oxidation behavior of Cr–Si–N coatings

Castaldi, L.; Kurapov, D.; Reiter, Andreas; Shklover, Valery; Schwaller, P.; Patscheider, Jörg

doi:10.1016/j.surfcoat.2007.05.070

Cited by 57 publications

(42 citation statements)

References 14 publications

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“…In vacuum, the phase separation of AlTiN and AlCrN into c-TiN or c-CrN and c-AlN followed by h-AlN formation leads to hardness decreases [4,5]. In addition, in AlCrN and AlCrSiN, annealing involves nitrogen reduction to produce Cr 2 N above 1000 ºC [6,7]. Later the Cr 2 N is oxidized to Cr 2 O 3 , which is consistent with thermodynamic and kinetic studies [7].…”

Section: Introductionsupporting

confidence: 83%

“…In addition, in AlCrN and AlCrSiN, annealing involves nitrogen reduction to produce Cr 2 N above 1000 ºC [6,7]. Later the Cr 2 N is oxidized to Cr 2 O 3 , which is consistent with thermodynamic and kinetic studies [7].…”

Section: Introductionsupporting

confidence: 80%

“…The substrate temperature used for the coatings deposition should be sufficient to kinetically allow the segregation of Si 3 N 4 amorphous phase at the nanocrystals grain boundaries [7]. This behaviour was not observed in the present investigation and further studies, such as X-ray photoelectrons spectroscopy (XPS) and high resolution transmission electron microscopy (HRTEM), have to be performed in order to elucidate this aspect.…”

Section: Fig 2 Gixrd Patterns Of Alcrn and Alcrsin Coatingsmentioning

confidence: 72%

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Effect of Silicon Addition on Microstructure and Mechanical Properties of Chromium and Titanium Based Coatings

Ardila-Téllez¹,

Sanchez

Téllez

2014

Fac. Ing.

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<p>The changes in the microstructure, mechanical properties and residual stresses of AlTiN, AlTiSiN, AlCrN and AlCrSiN coatings, has been studied before and after annealing at 900 ºC and 1100 ºC, using scanning and transmission electron microscopy, along with nano-indentation and X-ray diffraction techniques. The As-deposited coatings show a columnar structure, with a crystallite size between 18 nm and 28 nm. Despite the silicon addition, no effect on the crystallite size refinement was observed.<br />However, the addition of silicon increases hardness, elastic modulus and compressive residual stresses. After annealing at 900 ºC, the crystallite size growth and the residual stress relaxes; therefore, the coating hardness decreases. At 1100 ºC, the oxide layers formed in AlTiN and AlTiSiN, which act as protective layers enhancing oxidation resistance; meanwhile, a complete oxidation of AlCrN and AlCrSiN coatings take place. The Titanium based coatings present some superior mechanical properties and oxidation resistance than the chromium based coatings at 900 ºC and 1100 ºC.</p>

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Section: Introductionsupporting

confidence: 83%

Section: Introductionsupporting

confidence: 80%

Section: Fig 2 Gixrd Patterns Of Alcrn and Alcrsin Coatingsmentioning

confidence: 72%

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Effect of Silicon Addition on Microstructure and Mechanical Properties of Chromium and Titanium Based Coatings

Ardila-Téllez¹,

Sanchez

Téllez

2014

Fac. Ing.

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“…The deposition rate of the films decreased from 30.16 nm/min to 25.66nm/min with an increase of the substrate temperature from 200 o C to 400 o C. The deposition in a pure nitrogen environment leads to a low deposition rate owing to the nitride mode. The observed lower deposition rate at a higher substrate temperature, despite the higher adatom mobility during the nitride mode of deposition, is probably due to an increased collision between the sputtered particle and the gas atom, leading to a reduced number of atoms to arrive on the substrate [48]. The lower deposition rates at higher substrate temperatures may be due to the balance between the number of atoms arriving on the substrate surface and the atoms leaving from the substrate surface by further evaporation.…”

Section: Effect Of the Substrate Temperaturementioning

confidence: 95%

Structural and mechanical characterisation of the chromium nitride hard coating deposited on the silicon and glass substrate

Shah¹

2017

Int. J. Automot. Mech. Eng.

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Chromium Nitride (CrN) thin films are known for their comparatively good mechanical properties. CrN was deposited on Silicon (100) and glass substrates by using DC magnetron sputtering and the influence of the partial nitrogen content and different gaseous environment on their microstructural characteristics were investigated in the present work. The CrN films were characterised with X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Atomic Force Microscopy (AFM) and Nanoindentation was used to characterise the structural and mechanical properties of the deposited thin film. The films showed the [200] preferred orientation at lower (at 20%) nitrogen contents while the intensity of the peak [111] increases with the increase in the nitrogen content. The Cr2N (220) peak was identified at a nitrogen content above 30%, but for nitrogen content above 40%, the CrN phase was observed in both films deposited on Si(100) and glass substrates. The preferred orientations of the CrN thin films are strongly influenced by the nitrogen content inside the chamber as observed in the present work. The surface roughness and deposition rate were observed in a reducing trend with the increasing N2 content and temperature from 20.31 to 2.71nm and from 30.16 nm/min to 25.66nm/min, respectively. The hardness and modulus of pure N2 films deposited on the Si substrates were evaluated by nanoindentaion testing and indicated 31 GPa and 250 GPa, respectively.

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“…It has been found that the addition of other elements such as silicon (Si) in MeN systems can have profound effects on their mechanical, chemical and tribological properties [11,14,[221][222][223][224][225]. These changes have been explained by two main mechanisms: the formation of a nanocomposite microstructure formed by the segregation of MeN grains separated by a monolayer thick SiN x matrix [14,221,223] and solid solution hardening [11,222] due to the substitution of Me atoms by Si in the MeN lattice.…”

Section: A1 Introductionmentioning

confidence: 99%

Solid particle erosion mechanisms of protective coatings for aerospace applications

Bousser

Martinů

Klemberg-Sapieha

2014

Surface and Coatings Technology

136

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High temperature phase changes and oxidation behavior of Cr–Si–N coatings

Cited by 57 publications

References 14 publications

Effect of Silicon Addition on Microstructure and Mechanical Properties of Chromium and Titanium Based Coatings

Effect of Silicon Addition on Microstructure and Mechanical Properties of Chromium and Titanium Based Coatings

Structural and mechanical characterisation of the chromium nitride hard coating deposited on the silicon and glass substrate

Solid particle erosion mechanisms of protective coatings for aerospace applications

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