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Materials science of wear-protective nanostructured thin films
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2837-3656
2004 (English)In: NANOSTRUCTURED THIN FILMS AND NANODISPERSION STRENGTHENED COATINGS / [ed] Voevodin, AA; Shtansky, DV; Levashov, EA; Moore, JJ, SPRINGER , 2004, Vol. 155, 9-21 p.Conference paper (Other academic)
Abstract [en]

Nano-design routes for ceramic thin films by PVD are reviewed. For TiN/NbN superlattices, glide within the layers is the dominant deformation mechanism in support of models for superhardening. Theory presumes plasticity with dislocation hindering at interfaces between phases with different shear modulus. It is shown that the superlattices exhibit crystal rotation near an indent, scratch or wear zone. A concept for age hardening of metastable coating materials is presented for the Ti-Al-N system. Spinodal decomposition with coherent cubic-phase nm-size domains is thus demonstrated, causing an increase in hardness during annealing. Finally, inherently nanolaminated hexagonal M(n+1)AX(n)-phases are considered (n=1,2,3; M=transition metal; A-group element; X=C/N). These phases combine ceramic and metallic properties. MAX phases in thin film form are reported, including Ti3SiC2 and Ti2AlN. Nanoindentation combined with electron microscopy reveals kink formation and cohesive delamination on the basal planes of these ductile materials.

Place, publisher, year, edition, pages
SPRINGER , 2004. Vol. 155, 9-21 p.
Keyword [en]
nitrides; carbides; superlattice; nanocomposite; MAX-phases; aging; self-assembly; spinodal decomposition; electron microscopy; nanoindentation
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-75418DOI: 10.1007/1-4020-2222-0_2ISI: 000224223400002ISBN: 1-4020-2221-2OAI: diva2:506566
NATO-Russia Advanced Research Workshop on Nanostructured Thin Films and Nanodispersion Strengthened Coatings, Technol Univ, Moscow State Inst Steel & Alloys, Moscow, Russia, Dec. 08-10, 2003
Available from: 2012-02-29 Created: 2012-02-29 Last updated: 2016-08-31

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Hultman, Lars
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