On the behaviour of indentation fracture in TiAlSiN hard thin films

Nakonechna, O.; Cselle, T.; Morstein, M.; Karimi, A.

doi:10.1016/s0040-6090(03)01072-1

Cited by 42 publications

(17 citation statements)

References 18 publications

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“…These films represent a natural evolution of the TiN and TiAlN commonly used in cutting tools and engineered components under severe wear conditions. Mechanical properties of the TiAlSiN coatings were already studied as monolayer or integrated in multilayered systems [23,24].…”

Section: Introductionmentioning

confidence: 99%

Influence of the abrasive particles size in the micro-abrasion wear tests of TiAlSiN thin coatings

Andrade

Martinho

Silva

et al. 2009

Wear

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Ball rotating micro-abrasion tribometers are commonly used to carry out wear tests on thin hard coat-ings. In these tests, different kinds of abrasives were used, as alumina (Al2 O3 ), silicon carbide (SiC) or diamond. In each kind of abrasive, several particle sizes can be used. Some studies were developed in order to evaluate the influence of the abrasive particle shape in the micro-abrasion process. Nevertheless, the particle size was not well correlated with the material removed amount and wear mechanisms. In this work, slurry of SiC abrasive in distilled water was used, with three different particles size. Initial sur-face topography was accessed by atomic force microscopy (AFM). Coating hardness measurements were performed with a micro-hardness tester. In order to evaluate the wear behaviour, a TiAlSiN thin hard film was used. The micro-abrasion tests were carried out with some different durations. The abrasive effect of the SiC particles was observed by scanning electron microscopy (SEM) both in the films (hard material) as in the substrate (soft material), after coating perforation. Wear grooves and removed material rate were compared and discussed.

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Section: Introductionmentioning

confidence: 99%

Influence of the abrasive particles size in the micro-abrasion wear tests of TiAlSiN thin coatings

Andrade

Martinho

Silva

et al. 2009

Wear

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“…The phenomenon has also been observed in previous publications by SEM or AFM at the micrometer scale, but cannot be interpreted clearly due to the limitation of the resolution. 12,16,31 Here these paralleled cracks can not only be seen clearly, but also can be explained from the atomic scale. The distance between paralleled cracks is not constant due to the effect of the loading and the microstructures.…”

Section: Methodsmentioning

confidence: 84%

“…Different from previous works, here atomic-scale microstructures underneath the indenter are directly presented to show how the microstructures vary to absorb the total work done by indenter. 16,24,32 In other words, this kind of thin films neutralizes the work done by external forces by means of forming microvoids and microcracks without fracture. The results here provide a deeper understanding of the indentation impression, or at least provide us a clear picture of the atomic-scale microstructure of the indentation impression.…”

Section: Methodsmentioning

confidence: 99%

“…As well, AFM images are also obtained at the micrometer level, only showing the surface morphologies of indentation impressions. [15][16][17][18][19][20][21][22][23][24][25] Comparing with optical and AFM images, SEM images have a better resolution of indentation impressions. However, little data has focused on the atomic-scale microstructure underneath the indenter, although the cross-section and surface morphologies with columnar or nanocrystalline structures have been broadly reported.…”

Section: Introductionmentioning

confidence: 99%

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Atomic-scale microstructure underneath nanoindentation in Al-Cr-N ceramic films

Lin

2015

AIP Advances

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In this work, Al-Cr-N ceramic films deformed by nanoindentation were peeled off from silicon substrates and their atomic-scale microstructures underneath the indenter were investigated by high resolution transmission electron microscope (HR-TEM). Dislocations were formed underneath the indenter and they accumulated along nano-grain boundaries. The accumulative dislocations triggered the crack initiation along grain boundaries, and further resulted in the crack propagation. Dislocations were also observed in nano-grains on the lateral contact area. A model was proposed to describe the variation of microstructures under nanoindentation.

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“…Multicomponent coatings using different metallic or nonmetallic elements combine the benefit of individual components, leading to a further improvement of coating properties [2]. The wellknown chromium-based hard films, such as chromium nitride (CrN), chromium carbon nitride (CrCN) [3] and chromium aluminum silicon nitride (CrAlSiN), exhibit high hardness, high corrosion resistance and low friction coefficient.…”

Section: Introductionmentioning

confidence: 99%