Characterization and compositional study of a ZrO2 engineering ceramic irradiated with a fibre laser beam

Shukla, Pratik; Lawrence, Jonathan

doi:10.1016/j.optlastec.2011.03.026

Cited by 20 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surface melting was not seen in the topographical images, but further analysis of the microstructure showed some degree of surface melting. From this it could be gathered that the surface temperatures at the fiber laser-ZrO 2 interaction would have ranged from 2300 to 2500 C and was confirmed from a previous investigation [53]. This is because the oxygen assist gas is generally much more reactive than other gas compositions.…”

Section: Topographical Changessupporting

confidence: 77%

Characterization and modification of technical ceramics through laser surface engineering

Shukla

Lawrence

2015

Laser Surface Engineering

Self Cite

View full text Add to dashboard Cite

Section: Topographical Changessupporting

confidence: 77%

Characterization and modification of technical ceramics through laser surface engineering

Shukla

Lawrence

2015

Laser Surface Engineering

Self Cite

View full text Add to dashboard Cite

“…The morphological changes can be explained quite easily in terms of melting / ablation phenomena [7]. However, several hypotheses exist to explain the apparition of the colour: formation of ZrN [6,8] or ZrC [9], of colour centres [10], or of oxygen vacancies [11].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and hydrothermal ageing of alumina-zirconia composites modified by laser engraving

Grémillard

Cárdenas

Reverón

et al. 2020

Journal of the European Ceramic Society

View full text Add to dashboard Cite

Laser engraving is more and more commonly used to write permanent identity features on medical devices. In particular, it is performed on ceramic heads for hip prostheses. Since these components are submitted to high mechanical loading during long periods of time (several years), it is critical to assess the influence of laser engraving on their durability. In the present article, laser marking of zirconia-toughened alumina and alumina-toughened zirconia resulted in an important colour change. It did not affect notably the resistance to hydrothermal ageing, despite important microstructural changes (in particular formation of a zirconia-alumina solid solution layer some tenths of micrometres thick). The formation of this original microstructure was explained by the fast cooling rate after lasing.

show abstract

“…Since in ceramic materials fracture is governed by critical defects [13], it is necessary to understand how the laser treatment could affect defect population and distribution, especially on the surface. At date, few studies [14][15][16] about the mechanical properties of laser patterned zirconia have been reported and mainly involved hardness measurements alone [15,16]. Only C. Daniel et al [14] have tested uniaxial flexural strength of dental grade zirconia patterned with DLIP: they reported a notable increment in flexural strength attributed to the nanometric size grains and compressive residual stresses caused by laser treatment.…”

Section: Introductionmentioning

confidence: 99%

Mechanical reliability of dental grade zirconia after laser patterning

Roitero

Anglada

Mücklich

et al. 2018

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

The aim of this work is to test the mechanical properties of dental zirconia surfaces patterned with Nd:YAG laser interference (λ = 532 nm and 10 ns pulse). The laser treatment produces an alteration of the topography, engraving a periodic striped pattern. Laser-material interaction results mainly in thermal effects producing microcracking, phase transformation and texturization. The role of such microstructural modifications and collateral damage on the integrity and mechanical performances has been assessed. Laser patterned discs of zirconia doped with 3% mol yttria (3Y-TZP) have been tested before and after a thermal treatment to anneal residual stresses and revert phase transformation. Both groups of samples behave in a similar manner, excluding residual stresses and phase transformation from the origin of properties modification. Result show that laser patterning induces a minor decrease in mechanical properties and surface integrity of 3Y-TZP surfaces. The biaxial strength decreases as a consequence of the damage induced by laser patterning. Fractographic observations identify preexisting defects enlarged by local laser interaction as the fracture origins. The Hardness and Young modulus of treated surfaces tested with nanoindentation also decrease slightly after laser treatment and this may be attributed to laser-induced microcracking.

show abstract

Characterization and compositional study of a ZrO2 engineering ceramic irradiated with a fibre laser beam

Cited by 20 publications

References 28 publications

Characterization and modification of technical ceramics through laser surface engineering

Characterization and modification of technical ceramics through laser surface engineering

Microstructure and hydrothermal ageing of alumina-zirconia composites modified by laser engraving

Mechanical reliability of dental grade zirconia after laser patterning

Contact Info

Product

Resources

About