Microstructure and mechanical properties of WC–40vol%Al2O3 composites hot pressed with MgO and CeO2 additives

Qu, Haixia; Zhu, Shuguang; Di, Ping; Ouyang, Chenxin; Li, Qian

doi:10.1016/j.ceramint.2012.08.043

Cited by 28 publications

(13 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4c . This study confirmed the presence of Al 2 O 3 [ 15 ]. The XPS spectrum of pure Mn 3 O 4 exhibited peaks for Mn 2p 3/2 , Mn 2p 1/2 , and O 1s at binding energy (BE) values of 644.10, 655.07, and 531.04 eV, respectively (Fig.…”

Section: Resultssupporting

confidence: 87%

Visible light functioning photocatalyst based on Al2O3 doped Mn3O4 nanomaterial for the degradation of organic toxin

Asif¹,

Khan²,

Asiri³

2015

Nanoscale Res Lett

View full text Add to dashboard Cite

Al2O3 doped Mn3O4 nanomaterial was synthesized by low-temperature stirring method and applied as a catalyst for the degradation of organic pollutants under solar light for prospective environmental applications. The morphological and physiochemical structure of the synthesized solar photocatalyst was investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). FESEM showed a mixture of nanowires and aggregated nanoparticles. This Al2O3 doped Mn3O4 nanomaterial exhibited high solar photocatalytic degradation in a short time when applied to brilliant cresyl blue (BCB). Thus, the synthesized nanoparticles can be used as an efficient solar photocatalyst for the degradation of BCB.

show abstract

Section: Resultssupporting

confidence: 87%

Visible light functioning photocatalyst based on Al2O3 doped Mn3O4 nanomaterial for the degradation of organic toxin

Asif¹,

Khan²,

Asiri³

2015

Nanoscale Res Lett

View full text Add to dashboard Cite

show abstract

“…Hence, to solve the current problem and to improve the performance of porous alumina ceramic, it is necessary to add some additives, such as MgO and SiO 2 . Knowing that the composition of SiO 2 forms a low eutectic liquid phase at the grain boundaries and accelerates ion diffusion, it is beneficial for low‐temperature sintering, whereas MgO can act as a grain growth inhibitor by the formation of MgAl 2 O 4 phase to suppress migration of the grain boundary . Through the researches mentioned above, the aim of this study was to prepare porous alumina ceramics with the additions of SiO 2 and MgO as the sintering aids by starch consolidation casting method.…”

Section: Introductionmentioning

confidence: 99%

“…[34][35][36] Knowing that the composition of SiO 2 forms a low eutectic liquid phase at the grain boundaries and accelerates ion diffusion, it is beneficial for low-temperature sintering, whereas MgO can act as a grain growth inhibitor by the formation of MgAl 2 O 4 phase to suppress migration of the grain boundary. 36,37 Through the researches mentioned above, the aim of this study was to prepare porous alumina ceramics with the additions of SiO 2 and MgO as the sintering aids by starch consolidation casting method. Besides, the forming route was optimized in this paper with the aim of developing green bodies without deformation and with homogeneous porous microstructures in comparison with unmodified porous Al 2 O 3 ceramics via starch consolidation casting method.…”

Section: Introductionmentioning

confidence: 99%

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Chen

Cui

et al. 2018

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Porous alumina ceramics were fabricated by starch consolidation casting using corn starch as a curing agent while their microstructure, mechanical properties, pore size distribution, and corrosion resistance were examined. Results showed that the porous alumina ceramics with the flexural strength of about 44.31MPa, apparent porosity of about 47.67% and pore size distribution in the range of 1‐4 μm could be obtained with 3wt% SiO2 and 3wt% MgO additives. Corrosion resistance results showed mass losses: hot H2SO4 solution and NaOH solution for 10 hours were 0.77% and 2.19%, which showed that these porous alumina ceramics may offer better corrosion resistance in acidic conditions.

show abstract

“…It was observed that the grain size was low at high La 2 O 3 contents, because the La 2 O 3 particles act as barriers to block the grain boundaries, leading to a finer microstructure. 15 The results showed that rare earth La 2 O 3 can promote dispersion of Al 2 O 3 , refine Al grains and improve the wettability between the Al 2 O 3 and aluminium matrix.…”

Section: Methodsmentioning

confidence: 94%

Effects of rare earth oxide La₂O₃ on microstructure and properties of Al₂O₃/Al composites

Wang

Liang

Qin

2015

Materials Research Innovations

View full text Add to dashboard Cite

was processed by a powder metallurgy process, and the effects of the addition of rare earth La 2 O 3 on the microstructures and mechanical properties were investigated by scanning electron microscopy and universal properties tests. The refinement mechanism of the rare earth oxide was investigated as well. It has found that the addition of La 2 O 3 increased the density of the sintered Al 2 O 3 /Al composite and the matrix grains were significantly refined. The addition of La 2 O 3 showed a remarkable improvement on the compression strength, which was up to more than 150% higher than that of materials not doped with rare earth oxides.

show abstract

Microstructure and mechanical properties of WC–40vol%Al2O3 composites hot pressed with MgO and CeO2 additives

Cited by 28 publications

References 33 publications

Visible light functioning photocatalyst based on Al2O3 doped Mn3O4 nanomaterial for the degradation of organic toxin

Visible light functioning photocatalyst based on Al2O3 doped Mn3O4 nanomaterial for the degradation of organic toxin

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Effects of rare earth oxide La₂O₃ on microstructure and properties of Al₂O₃/Al composites

Contact Info

Product

Resources

About

Microstructure and mechanical properties of WC–40vol%Al2O3 composites hot pressed with MgO and CeO2 additives

Cited by 28 publications

References 33 publications

Visible light functioning photocatalyst based on Al2O3 doped Mn3O4 nanomaterial for the degradation of organic toxin

Visible light functioning photocatalyst based on Al2O3 doped Mn3O4 nanomaterial for the degradation of organic toxin

Preparation of porous Al2O3 ceramics by starch consolidation casting method

Effects of rare earth oxide La2O3 on microstructure and properties of Al2O3/Al composites

Contact Info

Product

Resources

About

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Effects of rare earth oxide La₂O₃ on microstructure and properties of Al₂O₃/Al composites