Influence of laser interference patterning on microstructure and friction behavior of gold/yttria-stabilized zirconia nanocomposite thin films

Catrin, Rodolphe; Gries, Thomas; Raillard, Brice; Mücklich, Frank; Migot, Sylvie; Horwat, David

doi:10.1557/jmr.2011.443

Cited by 2 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This process thereby enables local modification of the electrical resistance of Au−YSZ nanocomposite films in addition to providing improved tribological properties, as already demonstrated. 10 In particular, this finding may be of interest for practical applications in sliding electrical contacts.…”

Section: Cosmentioning

confidence: 79%

“…We have shown elsewhere that this morphology and this microstructure dramatically decrease the friction coefficient. 10 Hereinafter, we investigate the influence of LIP on the electrical resistivity of Au/YSZ films and compare it to the influence of thermal annealing.…”

Section: Cosmentioning

confidence: 99%

“…10 We showed recently that the LIP method locally triggers the relocation of gold atoms in the regions of interference maxima and generates periodic topography that limits the contact surface between reciprocate sliding surfaces. 10 We believe this is of interest for adjusting the local tribological characteristics of multifunctional optically/ catalytically active materials or microsystems subject to localized mechanical requirements.…”

Section: Introductionmentioning

confidence: 99%

“…The interaction of the beams with the material leads to a periodic thermal treatment with local heating of the surface in a well-defined geometrical pattern. Due to a high local thermal gradient produced in a very short time, this one-step process produces metallurgical effects such as lateral grain growth, , chemical decomposition, intermetallic phase precipitation, and surface segregation . We showed recently that the LIP method locally triggers the relocation of gold atoms in the regions of interference maxima and generates periodic topography that limits the contact surface between reciprocate sliding surfaces .…”

Section: Introductionmentioning

confidence: 99%

“…Due to a high local thermal gradient produced in a very short time, this one-step process produces metallurgical effects such as lateral grain growth, , chemical decomposition, intermetallic phase precipitation, and surface segregation . We showed recently that the LIP method locally triggers the relocation of gold atoms in the regions of interference maxima and generates periodic topography that limits the contact surface between reciprocate sliding surfaces . We believe this is of interest for adjusting the local tribological characteristics of multifunctional optically/catalytically active materials or microsystems subject to localized mechanical requirements.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Local Modification of the Microstructure and Electrical Properties of Multifunctional Au–YSZ Nanocomposite Thin Films by Laser Interference Patterning

Gries

Catrin

Migot

et al. 2014

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Nanocomposite films consisting of gold nanoparticles embedded in an yttria-stabilized zirconia matrix (Au-YSZ) have been synthesized with different gold loadings by reactive magnetron sputtering followed by ex situ annealing in air or laser interference patterning (LIP) treatment. It is shown that the electrical conductivity of the nanocomposite films can be modified to a large extent by changing the gold loading, by thermal annealing, or by LIP. The structural and microstructural analyses evidenced the segregation of metallic gold in crystalline form for all synthesis conditions and treatments applied. Thermal annealing above 400 °C is observed to trigger the growth of pre-existing nanoparticles in the volume of the films. Moreover, pronounced segregation of gold to the film surface is observed for Au/(Au + Zr + Y) ratios above 0.40, which may prevent the use of thermal annealing to functionalize gold-rich Au-YSZ coatings. In contrast, significant modifications of the microstructure were detected within the interference spot (spot size close to 2 × 2 mm) of LIP treatments only for the regions corresponding to constructive interference. As a consequence, besides its already demonstrated ability to modify the friction behavior of Au-YSZ films, the LIP treatment enables local tailoring of their electrical resistivity. The combination of these characteristics can be of great interest for sliding electrical contacts.

show abstract

Section: Cosmentioning

confidence: 79%

Section: Cosmentioning

confidence: 99%