Wear Resistance Mechanism of Alumina Ceramics Containing Gd2O3

Wu, Tingting; Su, Jianxiu; Li, Yongfeng; Zhao, Hongyuan; Zhang, Yaqi; Zhang, Mingming; Wu, Bolin

doi:10.3390/ma11102054

Cited by 8 publications

(5 citation statements)

References 38 publications

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“…Comparing Sc 2 O 3 with Gd 2 O 3 11 and Lu 2 O 3 , 12 it is found that their effects on the wear rate of ceramics are similar. The wear resistance of ceramics containing Lu is slightly better.…”

Section: Discussionmentioning

confidence: 93%

“…Different rare earths have different effects on the wear resistance of ceramics. [11][12][13][14][15][16][17] In this paper, we studied the effect of Sc 2 O 3 on the wear resistance of Al 2 O 3 ceramics. In the periodic table, there is no connection between Al and Sc, but the properties of Sc are very close to Al.…”

Section: Introductionmentioning

confidence: 99%

“…Different rare earths have different effects on the wear resistance of ceramics 11–17 . In this paper, we studied the effect of Sc 2 O 3 on the wear resistance of Al 2 O 3 ceramics.…”

Section: Introductionmentioning

confidence: 99%

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Processing of alumina grinding media using scandia as a sintering aid

Zhang

et al. 2023

Int J Applied Ceramic Tech

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Wear resistance is one of the essential properties of grinding media. Good wear resistance is the quality guarantee of preparing high‐purity ultrafine powder. This paper mainly studied the influence rule and enhanced mechanism of Sc2O3 on the wear resistance of Al2O3 ceramics. The relationship between Sc2O3 content and sintering properties, wear resistance, and microstructure of ceramics was studied. According to research findings, Sc2O3 could promote the densification of ceramics, improve the morphology of grain boundaries, enhance the binding force of grains, and increase the mechanical property of alumina grain.

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Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Processing of alumina grinding media using scandia as a sintering aid

Zhang

et al. 2023

Int J Applied Ceramic Tech

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“…It should be noted that the primary material of the matrix of samples was alumina, which is a dielectric [66,67] or an n-type semiconductor [68] with a melting point of 2044 • C and a boiling point of 2977 • C [22,69].…”

Section: Electrical Properties and Electrical Discharge Machining Of mentioning

confidence: 99%

The Effect of TiC Additive on Mechanical and Electrical Properties of Al2O3 Ceramic

et al. 2018

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In this study the influence of TiC content on the mechanical and electrical properties of Al2O3-TiC composites containing 30 and 40 vol.% TiC were investigated. The Vickers hardness and fracture toughness of the composites increased with the addition of TiC phase. The composite with 40 vol.% TiC showed the highest flexural strength (687 ± 39 MPa), fracture toughness (7.8 ± 0.4 MPa·m1/2) and hardness (22.3 ± 0.3 GPa) with a homogeneous distribution of the second phase within the ceramic matrix. Besides enhanced mechanical properties, it was found that ceramic composites with more than 30 vol.% TiC fabricated by the spark plasma sintering possess sufficient electrical conductivity for electrical discharge machining as well. Therefore, they do not limit the flexibility of the shape, and any intricate parts can be easily made with these composites which can be recommended for the production of cutting inserts in the tools for machining of superhard hardened steels, hard-to-machine materials, composites and other materials used in mechanical engineering.

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“…To be specific, MRI is a popular imaging technology due to its high-resolution morphological capabilities, non-invasiveness, and lack of risk of radiation damage [ 15 , 16 ]. More excitingly, incorporating the MRI contrast agents (e.g., gadolinium oxide (Gd 2 O 3 )) into nanosystems can extend the blood circulation time while endowing the nanosystems with MRI visibility by taking the shortened longitudinal proton relaxation time of the surrounding hydrogen protons [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

pH-Responsive Drug Delivery and Imaging Study of Hybrid Mesoporous Silica Nanoparticles

Guo²,

Qi³

et al. 2022

Molecules

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A system of pH-responsive and imaging nanocarriers was developed using mesoporous silica nanoparticles (MSNs), in which gadolinium (Gd) was doped through in situ doping (Gd2O3@MSN). Sodium alginate (SA) was attached to the surfaces of the amino groups of MSNs (NH2-Gd2O3@MSN) through the electrostatic adsorption between the amino groups and the carboxyl groups with the formation of hybrid SA-Gd2O3@MSN nanoparticles (NPs). The SA-coated NPs were spherical or near-spherical in shape with an average size of nearly 83.2 ± 8.7 nm. The in vitro drug release experiments of a model rhodamine B (RhB) cargo were performed at different pH values. The result confirmed the pH-responsiveness of the nanocarriers. The results of the cytotoxicity studies indicated that the SA-Gd2O3@MSN NPs were not cytotoxic by themselves. The results of the in vivo safety evaluation and the hemolysis assay confirmed that the system is highly biocompatible. It is noteworthy that the T1 contrast of the system was significantly enhanced by the Gd, as indicated by the result of the MR imaging. This study confirms that the synthesized hybrid nanosystem is promising for pH-responsive drug delivery and MR imaging for cancer diagnosis and treatment.

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Wear Resistance Mechanism of Alumina Ceramics Containing Gd2O3

Cited by 8 publications

References 38 publications

Processing of alumina grinding media using scandia as a sintering aid

Processing of alumina grinding media using scandia as a sintering aid

The Effect of TiC Additive on Mechanical and Electrical Properties of Al2O3 Ceramic

pH-Responsive Drug Delivery and Imaging Study of Hybrid Mesoporous Silica Nanoparticles

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