Pulsed electrospark deposition of MAX phase Cr2AlC based coatings on titanium alloy

Zamulaeva, E. I.; Левашов, Е. А.; Свиридова, Т. А.; Швындина, Н. В.; Петржик, М. И.

doi:10.1016/j.surfcoat.2013.08.002

Cited by 32 publications

(20 citation statements)

References 15 publications

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“…Comparison of all coatings shows that preferential (103) planes grew during the deposition process instead of (110) or (100/101). A dominant (103) diffraction peak has been reported by Zamulaeva et al [45,46] for the Cr 2 AlC coatings deposited on Ti substrates, as well as by Field [47]. In contrast, Li et al [48] discussed preferential coating growth at (110) planes taking place during deposition on the M38G super alloy.…”

Section: Coating Microstructurementioning

confidence: 92%

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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Section: Coating Microstructurementioning

confidence: 92%

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

Naveed

Obrosov

Żak

et al. 2016

Metals

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“…Nowadays, the ternary carbide Cr 2 AlC has a great potential for industrial application due to excellent high-temperature oxidation resistance and hot corrosion resistance due to the formation of a protective Al 2 O 3 layer [ 16 , 17 , 18 , 19 ]. Cr 2 AlC film has been successfully deposited onto silicon wafers [ 20 ], single crystalline oxide [ 21 , 22 ], steel [ 23 ], Ni-based superalloy [ 17 , 24 ], and Ti alloy [ 25 ]. Cr 2 AlC has been produced using magnetron sputtering, either by sputtering from elemental targets [ 26 ] or compound targets [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Chemical and Morphological Characterization of Magnetron Sputtered at Different Bias Voltages Cr-Al-C Coatings

et al. 2017

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MAX phases (M = transition metal, A = A-group element, and X = C/N) are of special interest because they possess a unique combination of the advantages of both metals and ceramics. Most attention is attracted to the ternary carbide Cr2AlC because of its excellent high-temperature oxidation, as well as hot corrosion resistance. Despite lots of publications, up to now the influence of bias voltage on the chemical bonding structure, surface morphology, and mechanical properties of the film is still not well understood. In the current study, Cr-Al-C films were deposited on silicon wafers (100) and Inconel 718 super alloy by dc magnetron sputtering with different substrate bias voltages and investigated using Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), Atomic Force Microscopy (AFM), and nanoindentation. Transmission Electron Microscopy (TEM) was used to analyze the correlation between the growth of the films and the coating microstructure. The XPS results confirm the presence of Cr2AlC MAX phase due to a negative shift of 0.6–0.9 eV of the Al2p to pure aluminum carbide peak. The XRD results reveal the presence of Cr2AlC MAX Phase and carbide phases, as well as intermetallic AlCr2. The film thickness decreases from 8.95 to 6.98 µm with increasing bias voltage. The coatings deposited at 90 V exhibit the lowest roughness (33 nm) and granular size (76 nm) combined with the highest hardness (15.9 GPa). The ratio of Al carbide to carbide-like carbon state changes from 0.12 to 0.22 and correlates with the mechanical properties of the coatings. TEM confirms the columnar structure, with a nanocrystalline substructure, of the films.

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“…Теоретически оценить характер взаимодейст-вия между электродом и подложкой, предсказать состав покрытия можно, рассчитав критерий Па-латника (τ а /τ к ) [32]. Соотношение, использующее только физические константы материалов элект-родов (теплоемкость С, теплопроводность λ, плот-ность ρ), описывает процессы переноса (или оп-ределяет преобладающее направление процесса массопереноса) и имеет следующий вид: (3) где τ а и τ к -характерные времена эрозии (обра-зования очагов плавления в зоне разряда) анода и катода соответственно; С а,к -теплоемкость, Дж/(кг·К); ρ а,к -плотность, кг/м 3 ; λ а,к -тепло-проводность, Вт/(м·К); Т а,к -температура плавле-ния, К; Т 0 -температура окружающей среды, К.…”

Section: исследование эрозионной способности электродных материалов иunclassified

Peculiarities of formation of sintered electrodes of the Ti–Ti3P–CaO composition and their application in technology of pulsed electric-discharge machining of titanium

Логинов¹,

Левашов²,

Потанин³

et al. 2015

Izv. VUZ. Poroshk. Met.

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Исследовано влияние механической обработки на структуру и фазовый состав порошковых смесей Ti-10%Ca 3 (PO 4 ) 2 . По тех-нологии прессования и вакуумного спекания получены керамические электродные материалы Ti-Ti 3 P-CaO с высокой одно-родностью компонентов и остаточной пористостью 5-7 %. Изучена эрозионная способность спеченного металлокерами-ческого электрода Ti-Ti 3 P-CaO при импульсной электроискровой обработке титановых подложек и проведено сравнение с электродами TiC 0,5 -Ti 3 PO x -CaO, изготовленными методом самораспространяющегося высокотемпературного синтеза. По-крытия, полученные при использовании электродов Ti-Ti 3 P-CaO и TiC 0,5 -Ti 3 PO x -CaO, характеризовались высокой сплошнос-тью, толщиной до 20 мкм, микротвердостью до 3,6 ГПа, шероховатостью 3,3-4,6 мкм, наличием и равномерным распределе-нием биоактивных элементов кальция и фосфора. 2015. No. 4. С. 45-58. DOI: dx.doi.org/10.17073/1997-308X-2015 Peculiarities of formation of sintered electrodes of the Ti-Ti 3 P-CaO composition and their application in technology of pulsed electric-discharge machining of titaniumThe influence of mechanical treatment on the structure and phase composition of Ti-10%Ca 3 (PO 4 ) 2 powder mixtures is investigated. The Ti-Ti 3 P-CaO ceramic electrode materials with a high uniformity of components and residual porosity of 5-7% are fabricated according to the pressing and vacuum sintering technology. The erosion ability of the Ti-Ti 3 P-CaO metal-ceramic electrode under the pulsed electric-discharge machining of titanium substrates is investigated and compared with the TiC 0,5 -Ti 3 PO x -CaO electrodes fabricated by self-propagating high-temperature synthesis. Coatings fabricated when using Ti-Ti 3 P-CaO and TiC 0,5 -Ti 3 PO x -CaO electrodes are characterized by high continuity, thickness up to 20 μm, microhardness up to 3,6 GPa, roughness to 3,3-4,6 μm, and the presence and uniform distribution of calcium and phosphorus bioactive elements.Keywords: pulsed electric-discharge machining, planetary ball mill, sintering, bioactive coating, ceramics.

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Pulsed electrospark deposition of MAX phase Cr2AlC based coatings on titanium alloy

Cited by 32 publications

References 15 publications

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

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

Chemical and Morphological Characterization of Magnetron Sputtered at Different Bias Voltages Cr-Al-C Coatings

Peculiarities of formation of sintered electrodes of the Ti–Ti3P–CaO composition and their application in technology of pulsed electric-discharge machining of titanium

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