Alumina–titania ceramics prepared by microwave sintering and conventional pressure-less sintering

Bian, Han-min; Yang, Yong; Wang, Youshan; Jiang, Hai-fu; Hu, Zhijuan; Ye, Weimin

doi:10.1016/j.jallcom.2012.02.071

Cited by 34 publications

(11 citation statements)

References 30 publications

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“…This figure shows the diffraction peaks of the untreated and treated samples. As can be seen, the intensity of the diffraction peaks of the treated sample is higher than the untreated sample, this may be due to the presence of the new phase, among them AlN phase, which is consistent with the findings reported by Bian et al [14] and Pariona [8].…”

Section: Low-angle X-ray Diffraction (Laxrd) Analysissupporting

confidence: 91%

The Alumina Film Nanomorphology Formed to Improve the Corrosion Resistance of Al-2.0 wt% Fe Alloy as Result of the Laser Surface Melting Technique Applied

Pariona¹,

Micene²

2017

ACES

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The laser surface remelting (LSR) treatment was performed to Al-2.0 wt% Fe alloy with a 2 kW Yb-fiber laser (IPG YLR-2000S). The substrate and laser-treated material characterization were executed using different techniques. Among them, the microstructure was analyzed by optical microscope, SEM, low-angle X-ray diffraction (LAXRD) and the corrosion test was made in aerated solution of 0.1 M H 2 SO 4 at a temperature of 25˚C ± 0.5˚C. As result was shown, the micrograph of LSR-treated material displaying can be a fine cellular structure and the existence of certain nanoporosities and a similar to a nano-dendritic growth was observed too. The characteristic of melted zone was constituted of metastable phases according to the result of x-rays and the behavior corrosion as a result of the LSR-treated sample, which it was shown to be more resistant to corrosion than the untreated sample. A comparative study was carried out of the cyclic polarization of the laser-treated and untreated samples, demonstrating that the reduction and oxidation reverse peaks were not observed and being the cyclic polarization behavior was of irreversible character in both samples, however, the LSR-treated sample propitious the passivity on the surface also reduced the corrosion phenomena. Wherefore, this type of laser-treated alloy can be applied in the aerospace, aeronautic and automobilist industries.

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Section: Low-angle X-ray Diffraction (Laxrd) Analysissupporting

confidence: 91%

The Alumina Film Nanomorphology Formed to Improve the Corrosion Resistance of Al-2.0 wt% Fe Alloy as Result of the Laser Surface Melting Technique Applied

Pariona¹,

Micene²

2017

ACES

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“…The dominating metastable phase Al 2 O 3 (alumina) that appears in almost all the picks of Fig. 11 and the LA-XRD pattern is similar to the result of authors Bian et al [21].…”

Section: La-xrd Of the Laser-treated Alloy Analysissupporting

confidence: 87%

“…Fig. 4 corresponds to region β of laser-treated sample, presenting evidence of lamella stacking structure, it was also observed by Li et al [20] and Bian et al [21]. The dominating metastable phase Al 2 O 3 (alumina) that appears in almost all the picks of Fig.…”

Section: La-xrd Of the Laser-treated Alloy Analysissupporting

confidence: 74%

AFM study of the effects of laser surface remelting on the morphology of Al–Fe aerospace alloys

Pariona

Teleginski

Santos

et al. 2012

Materials Characterization

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“…This might be responsible for the formation of Ti(C,N) whiskers. 1550℃/5min→1300℃/10min 30~50 TSS 5 1550℃/5min→1350℃/10min 30~50 TSS 6 1550℃/5min→1400℃/10min 30~50 Fig.1 Shape of the green compact …”

Section: Discussionmentioning

confidence: 99%

“…The mechanical properties of ceramic tools have great dependence on the sintering processes. In order to improve the mechanical properties of ceramic tool materials, various sintering technologies have been used, such as conventional sintering (pressureless sintering [4][5], hot pressing sintering [6][7] and hot isostatic pressing sintering [8][9]), gas-pressure sintering [10], microwave sintering [11][12] and spark plasma sintering [13][14]. When sintered by the conventional sintering, slow heating rate, high sintering temperature and long holding time are generally needed in order to fabricate the fully dense ceramics.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Al 2 O 3 /Ti(C, N) ceramic tool materials by one-step and two-step microwave sintering

Yin

Yuan

Cheng

et al. 2016

Materials Science and Engineering: A

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Alumina–titania ceramics prepared by microwave sintering and conventional pressure-less sintering

Cited by 34 publications

References 30 publications

The Alumina Film Nanomorphology Formed to Improve the Corrosion Resistance of Al-2.0 wt% Fe Alloy as Result of the Laser Surface Melting Technique Applied

The Alumina Film Nanomorphology Formed to Improve the Corrosion Resistance of Al-2.0 wt% Fe Alloy as Result of the Laser Surface Melting Technique Applied

AFM study of the effects of laser surface remelting on the morphology of Al–Fe aerospace alloys

Microstructure and mechanical properties of Al 2 O 3 /Ti(C, N) ceramic tool materials by one-step and two-step microwave sintering

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