Effect of fly ash cenosphere@SiO2 core-shell microspheres on physical properties and microstructures of vitrified bond diamond tools

Ye, Yin; Xu, Pengfei; Fang, Jiabin; Yang, Jiale

doi:10.1016/j.diamond.2020.107703

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…From the diffraction pattern of MoS 2 @SiO 2 , the characteristic diffraction peaks of MoS 2 @SiO 2 at 38.7° and 69.88°r espectively correspond to the (100) and (110) planes of MoS 2 . In addition, the broad diffraction peak at 20-30° is amorphous SiO 2 , respectively (JCPDS No.29-0085) [21,22]. The results con rmed that the MoS 2 nano owers were coated with amorphous SiO 2 .…”

Section: Composition Structure and Microstructure Of Mos 2 @Siomentioning

confidence: 79%

α-MoO3@SiO2 core-shell nanospheres: spatially confined synthesis and tribological properties

Gao

Pan

et al. 2022

Preprint

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Molybdenum disulfide (MoS2) is widely used in the field of lubrication due to its unique layered structure. But in a high temperature environment, MoS2 can be greatly deteriorated by severe oxidation, showing a higher friction coefficient and a shorter service life. The modified Stöber method was used to coat SiO2 on the surface of MoS2, so that MoS2 was converted into layered α-MoO3 in a confined space at high temperature. The morphology, size and composition of the prepared α-MoO3@SiO2 core-shell nanoparticles were investigated using transmission electron microscopy, scanning electron microscopy, x-ray diffraction and Raman spectroscopy. The tribological properties of the prepared nanoparticles were investigated by ball-disk friction experiments. The results show that the prepared nanoparticles have uniform particle size, high shell coverage and excellent anti-wear properties. Based on the analysis of the wear scars and the existing elements on the friction surface, the lubrication mechanism of the core-shell structure in the friction experiment was discussed.

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Section: Composition Structure and Microstructure Of Mos 2 @Siomentioning

confidence: 79%

α-MoO3@SiO2 core-shell nanospheres: spatially confined synthesis and tribological properties

Gao

Pan

et al. 2022

Preprint

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“…The conventional method for preparing vitri ed bond diamond grinding wheels involves cold pressing using steel molds [12]. In this process, diamond abrasives and vitri ed bond are weighed in speci c proportions, and a temporary bond like dextrin powder or polyvinyl alcohol is utilized to bind the mixture.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of vitrified bond diamond grinding wheel via UV-curing

Chen,

Xiao,

Han

et al. 2023

Preprint

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This paper presents an additive manufacturing UV-curing successful fabrication of vitrified bond diamond grinding wheel. High-performance vitrified bond was obtained by high-temperature melting of SiO2-B2O3-Al2O3-Na2O ceramic raw materials and used for grinding wheel preparation. UV-curing technology is characterized by high precision in shaping, fast processing speed, and superior quality, making it a promising technology for the fabrication of vitrified bond diamond grinding wheels. In order to meet the requirements for UV-curing of the grinding wheels, the preparation of vitrified bond slurry with high solid content and low viscosity was extensively investigated. The effects of dispersant, particle size of vitrified bond, and solid content on the viscosity of the slurry were systematically analyzed. Furthermore, in order to explore the optimal formulation of the grinding wheel, debinding and sintering conditions, sintering temperature, grit-to-bond ratio, and the evaluation of the grinding performance of the wheel on hard and brittle materials such as silicon carbide ceramic were studied. The results show that the vitrified bond diamond grinding wheel exhibits optimal comprehensive performance with a sintering temperature of 680°C and a grit-to-bond ratio of 7:3. The minimum surface roughness of the workpiece after grinding is 1.767 µm, the material removal rate is 5.08 mg/s, the grinding ratio is 9.78, and the friction coefficient is stabilized at about 0.5 during grinding. This paper provides guidance for the manufacture of vitrified bond diamond grinding wheels by UV-curing.

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“…The conventional method for preparing vitrified bond diamond grinding wheels involves cold pressing using steel molds [12]. In this process, diamond abrasives and vitrified bonds are weighed in specific proportions, and a temporary adhesive like dextrin powder or polyvinyl alcohol is utilized to bind the mixture.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Vitrified Bond Diamond Grinding Wheel via LCD Photopolymerization

Chen,

Xiao,

Han

et al. 2023

Coatings

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In this paper, a liquid crystal display (LCD) photopolymerization method is proposed, and a vitrified bond diamond grinding wheel is successfully prepared. A high-performance vitrified bond was obtained by melting SiO2-B2O3-Al2O3-Na2O ceramic raw materials and used for grinding wheel preparation. LCD photopolymerization technology is characterized by high precision in shaping, fast processing speed, and superior quality, making it a promising technology for fabricating vitrified bond diamond grinding wheels. The preparation of vitrified bond slurry with high solid content and low viscosity was extensively investigated to meet the fabrication requirements. The effects of dispersant, the particle size of the vitrified bond, and solid content on the viscosity of the slurry were systematically analyzed. The vitrified bond slurry with solid content up to 65 wt.% (approximately 45.5 vol.%) was successfully prepared and met the requirements for printing. Furthermore, we explored the optimal formulation of the grinding wheel, debinding and sintering conditions, sintering temperature, grit-to-bond ratio, and the evaluation of the grinding performance of the wheel on hard and brittle materials, such as silicon carbide ceramic. Vitrified bond and abrasive slurry systems with a solid content of 65 wt.% (approximately 42.8 vol.%) were prepared. The results show that the vitrified bond diamond grinding wheel exhibits optimal comprehensive performance, with a sintering temperature of 680 °C and a grit-to-bond ratio of 4:6. The minimum surface roughness of the workpiece after grinding was 1.767 μm, the material removal rate was 5.08 mg/s, the grinding ratio was 9.78, and the friction coefficient was stabilized at about 0.5 during grinding. This paper guides the manufacturing of vitrified bond diamond grinding wheels via LCD photopolymerization.

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Effect of fly ash cenosphere@SiO2 core-shell microspheres on physical properties and microstructures of vitrified bond diamond tools

Cited by 9 publications

References 23 publications

α-MoO3@SiO2 core-shell nanospheres: spatially confined synthesis and tribological properties

α-MoO3@SiO2 core-shell nanospheres: spatially confined synthesis and tribological properties

Fabrication of vitrified bond diamond grinding wheel via UV-curing

Fabrication of Vitrified Bond Diamond Grinding Wheel via LCD Photopolymerization

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