Mechanical properties up to 1900 K of Al2O3/Er3Al5O12/ZrO2 eutectic ceramics grown by the laser floating zone method

Mesa, M.C.; Oliete, Patricia B.; Pastor, J.Y.; Martı́n, A.; LLorca, J.

doi:10.1016/j.jeurceramsoc.2013.11.013

Cited by 58 publications

(18 citation statements)

References 30 publications

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“…Rapid solidification of the super high-temperature Al 2 O 3 /ZrO 2 melt was studied by a novel method. The melt was prepared by explosion reaction using Al and Zr(NO 3 ) 4 as raw materials and then sprayed to Cu-plate. The heat transfer during the solidification process was analyzed by one-dimensional Finite Element Analysis.…”

Section: Methodsmentioning

confidence: 99%

“…These excellent properties make Al 2 O 3 -ZrO 2 eutectic ceramics potential for a wide range of applications. Generally, eutectic ceramics were mostly prepared by Bridgman method 3 , laser heated floating zone method 4,5 , micro pulling down method 6,7 , combustion synthesis method 8,9 , thermal explosion spraying [10][11][12] and so on. In addition, the mechanical properties of the Al 2 O 3 -ZrO 2 eutectic ceramics are mainly decided by microstructure which is influenced significantly by the cooling rate of the melt.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure Evolution and Model Analysis of Al2O3/ZrO2 Hypoeutectic Ceramic During Rapid Solidification

Zheng

Guo

et al. 2015

Mat. Res.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Model Analysis of Al2O3/ZrO2 Hypoeutectic Ceramic During Rapid Solidification

Zheng

Guo

et al. 2015

Mat. Res.

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“…Both the hardness and fracture toughness of the solidified Al 2 O 3 /EAG ceramic gradually increase with the increase of growth rate. When the growth rate v = 24 mm/h, the hardness and fracture toughness of the solidified Al 2 O 3 /EAG ceramic reach the maximum values of 21.57 GPa and 2.98 MPa·m 1/2 respectively, which are higher than those reported by Özerdem [27] or Mesa [19]. From Figure 6, the maximum hardness of the solidified ceramic is about 8.9 times that of the sintered ceramic with the same composition.…”

Section: Resultsmentioning

confidence: 70%

“…Combined with XRD analysis results, it is confirmed that the solidified ceramic is indeed composed of two phases of Al 2 O 3 (black) and EAG (gray). The two phases are intertwined and coupled to each other to form a typical binary eutectic “hieroglyph” structure [18,19]. …”

Section: Resultsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Al2O3/Er3Al5O12 Binary Eutectic Ceramic Prepared by Bridgman Method

et al. 2018

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Directionally solidified Al2O3/Er3Al5O12 (EAG) eutectic ceramic was prepared via vertical Bridgman method with high-frequency induction heating. The effects of the growth rate on the microstructure and mechanical properties of the solidified ceramic were investigated. The experimental results showed that there were no pores or amorphous phases in the directionally solidified Al2O3/EAG eutectic ceramic. Al2O3 phase was embedded in the EAG matrix phase, and the two phases were intertwined with each other to form a typical binary eutectic “hieroglyphic” structure. With the increase of growth rate, the phase size and spacing of the solidified Al2O3/EAG ceramic both decreased, and the growth rate and phase spacing satisfied the λ2v ≈ 60 formula of Jackson-Hunt theory. The cross section microstructure of the solidified ceramic always exhibited an irregular eutectic growth, while the longitudinal section microstructure presented a directional growth. The mechanical properties of the solidified ceramic gradually increased with the increase of growth rate, and the maximum hardness and fracture toughness could reach 21.57 GPa and 2.98 MPa·m1/2 respectively. It was considered that the crack deflection and branching could enhance the toughness of the solidified ceramic effectively.

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“…The structure investigation and improvement of mechanical properties are an aim of this research, and the improvement of surface layer hardness is an important factor for practice applications. In case of CAE PvD and PA CvD process on the surface of other steel grades and light cast alloys to increase the low stiffness of the substrate material [6][7][8]10,12,[16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Feeding on Heat Treated Aluminium Alloy Surface Properties

Labisz

Tański

Janicki

et al. 2016

Archives of Metallurgy and Materials

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In this paper are presented the investigation results concerning microstructure as well as mechanical properties of the surface layer of cast aluminium-silicon-copper alloy after heat treatment alloyed and/ or remelted with SiC ceramic powder using High Power Diode Laser (HPDL). For investigation of the achieved structure following methods were used: light and scanning electron microscopy with EDS microanalysis as well as mechanical properties using Rockwell hardness tester were measured. By mind of scanning electron microscopy, using secondary electron detection was it possible to determine the distribution of ceramic SiC powder phase occurred in the alloy after laser treatment. After the laser surface treatment carried out on the previously heat treated aluminium alloys, in the structure are observed changes concerning the distribution and morphology of the alloy phases as well as the added ceramic powder, these features influence the hardness of the obtained layers. In the structure, there were discovered three zones: the remelting zone (RZ) the heat influence zone (HAZ) and transition zone, with different structure and properties. In this paper also the laser treatment conditions: the laser power and ceramic powder feed rate were investigated. The surface laser structure changes in a manner, that there zones are revealed in the form of. This carried out investigations make it possible to develop, interesting technology, which could be very attractive for different branches of industry.

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Mechanical properties up to 1900 K of Al2O3/Er3Al5O12/ZrO2 eutectic ceramics grown by the laser floating zone method

Cited by 58 publications

References 30 publications

Microstructure Evolution and Model Analysis of Al2O3/ZrO2 Hypoeutectic Ceramic During Rapid Solidification

Microstructure Evolution and Model Analysis of Al2O3/ZrO2 Hypoeutectic Ceramic During Rapid Solidification

Microstructure and Mechanical Properties of Al2O3/Er3Al5O12 Binary Eutectic Ceramic Prepared by Bridgman Method

Effect of Laser Feeding on Heat Treated Aluminium Alloy Surface Properties

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