Effects of HiPIMS discharges and annealing on Cr-Al-C thin films

Ougier, Michaël; Michau, Alexandre; Schuster, Frédéric; Maskrot, Hicham; Schlegel, Michel L.

doi:10.1016/j.surfcoat.2020.126141

Cited by 18 publications

(8 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the signs for crystallinity is represented by the broadness of the observed Raman peaks. To certify the formation of the Cr 2 AlC MAX phase during annealing in [ 18 ], Raman analysis was employed. The big bump in the Raman spectrum was found to be a proof of the initial amorphous state of the sample, while after annealing, 1a , followed by 1b convoluted with 1c and, respectively, 1d Raman peaks were observed in [ 18 ] and considered evidence of the crystallization of the sample and occurrence of the 211 hexagonal phase.…”

Section: Resultsmentioning

confidence: 99%

“…In its bulk form, or subjected to sintering procedures, this system was investigated for other industrial domains [ 17 ]. Some authors studied the effect of changing the synthesis parameters onto the films’ tribology and oxidation behavior [ 18 , 19 , 20 ], while others considered the influence of ion beam annealing onto films of Cr-Al-C [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microcrystallization Effects Induced by Laser Annealing in Cr-Al-C Ion-Beam-Sputtered Films

Crisan

2022

Nanomaterials

View full text Add to dashboard Cite

The microcrystallization effects induced by the real-time laser annealing in Cr-Al-C ion-sputtered films with an off-stoichiometric composition are studied. The laser annealing has been performed during Raman experiments with tunable laser power densities. Morphostructural changes induced during laser annealing were investigated by scanning electron microscopy. It has been proven that real-time laser annealing in the high-laser-power-density mode promotes quite clearly the formation of nanograins through surface microcrystallization. Detailed Raman analysis allowed for the observation of the optical modes that unequivocally identifies the low-symmetry 211 MAX phase in both low- and high-power-density modes. Such findings confirming the microcrystallization as well as the stabilization of the grain boundaries by carbon nanoclustering are confirmed by X-ray diffraction results, where the single-phase hexagonal 211 was unequivocally proven to form in the high-laser-power-density mode. The microcrystallization via laser annealing was also found to be beneficial for the elastic behavior, as the hardness values between 16 and 26 GPa were found after laser annealing, accompanied by a significantly high Young’s bulk modulus. Such large values, larger than those in bulk compounds, are explicable by the nanometric grain sizes accompanied by the increase of the grain boundary regions.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microcrystallization Effects Induced by Laser Annealing in Cr-Al-C Ion-Beam-Sputtered Films

Crisan

2022

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The composition of the ionized vapor can be optimized by tuning sputtering parameters, for example, with the help of in situ monitoring tools such as optical spectroscopy. Next, the plasma properties can be used for tweaking interesting properties of the coatings [26,27]. Improved control of coating composition, microstructure and mechanical properties is achieved through high ion-to-neutral ratios and intense ionic bombardment [22,26].…”

Section: Introductionmentioning

confidence: 99%

“…Next, the plasma properties can be used for tweaking interesting properties of the coatings [26,27]. Improved control of coating composition, microstructure and mechanical properties is achieved through high ion-to-neutral ratios and intense ionic bombardment [22,26]. However, the overall performance of the coating system not only depends on the coating itself but also on the substrate surface pre-treatment as well as the coating architecture (i.e., bond coat/interlayer and/or multilayer).…”

Section: Introductionmentioning

confidence: 99%

“…It has been recognized that corrosion is mainly initiated by coating defects (pores, pinholes or scratches) and species trapped at the substrate/coating system interfaces [4,27,28]. Thus, defect-free interfaces should improve adhesion and anticorrosive properties [26,27]. In HiPIMS, these defect-free interfaces can be obtained by etching the surface with ions both from the plasmogenic gas Ar and from the target [23,29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface Modification of 304L Stainless Steel and Interface Engineering by HiPIMS Pre-Treatment

et al. 2022

Self Cite

View full text Add to dashboard Cite

A clean and defect-free substrate/coating interface is required to guarantee good adhesion of coatings under service conditions. For this purpose, an etching pre-treatment using High-Power Impulse Magnetron Sputtering (HiPIMS) was performed to modify the surface of 304L stainless steel. The effect of three etching procedures on the substrate properties, such as corrosion resistance and adhesion, was investigated with unprecedented spatial resolution and spectroscopic details. Glancing angle X-ray diffraction showed modification in phase content but no neoformation after steel etching. X-ray photoelectron spectroscopy confirmed the presence of etchant species (6–7 at.%) on the extreme surface of the substrate. Transmission Electron Microscopy and Atomic Probe Tomography showed that the interface was less than a few nanometers wide. Polarization curves in a nitric acid solution at boiling temperature showed, for the first time, that the Ti+ and Zr+ etchings decreased the corrosion current density compared to the untreated original surface. Scratch-test measurements indicated better substrate/coating adhesion using HiPIMS metal ion etching. Electrochemical characterization revealed that Zr etching and thin coating improve the anti-corrosion properties of stainless steel in strong nitric acid conditions.

show abstract

In Situ Synthesis of Cr2AlC Gradient Coating by Plasma Transferred Arc Cladding

Chen

Zhang

et al. 2023

J Therm Spray Tech

View full text Add to dashboard Cite

Effects of HiPIMS discharges and annealing on Cr-Al-C thin films

Cited by 18 publications

References 90 publications

Microcrystallization Effects Induced by Laser Annealing in Cr-Al-C Ion-Beam-Sputtered Films

Microcrystallization Effects Induced by Laser Annealing in Cr-Al-C Ion-Beam-Sputtered Films

Surface Modification of 304L Stainless Steel and Interface Engineering by HiPIMS Pre-Treatment

In Situ Synthesis of Cr2AlC Gradient Coating by Plasma Transferred Arc Cladding

Contact Info

Product

Resources

About