Effects of nano-alumina content on the formation of interconnected pores in porous purging plug materials

Wang, Qingheng; Li, Yuanbing; Li, Shujing; Xu, Nan; Xiang, Ruofei; Ou, Yang; Ni, Yue’e

doi:10.1016/j.ceramint.2017.09.064

Cited by 23 publications

(2 citation statements)

References 17 publications

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“…Moreover, as the sintering temperature increased, the mass loss rate also gradually increased. This may be due to the partial volatilization of B 2 O 3 at high temperatures 15 . Table 2 shows the content of boric acid theoretically reacted with gadolinium oxide and the content of unreacted boric acid.…”

Section: Resultsmentioning

confidence: 99%

Thermally insulating GdBO₃ ceramics with neutron shielding performance

Dong

et al. 2021

Int J Applied Ceramic Tech

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There is an urgent demand for multifunctional insulation materials with neutron shielding ability that can be particularly used in the nuclear energy system. GdBO3 ceramics are one of the candidates for such materials. In this study, GdBO3 ceramics were successfully synthesized using a simple solid‐phase method. The effect of boric acid content on the micro and macro properties of GdBO3 ceramics was explored. The experimental results indicate that the thermal conductivity of the resulting GdBO3 ceramics ranged from .12 to .68 W/(m⋅K), and lower thermal conductivity was achieved with smaller pore size and higher apparent porosity of the sintered product. Moreover, the mechanical properties of the samples in multiple temperature ranges can be improved by increasing boric acid content. Finally, neutron shielding permeability study, performed on the samples in different thicknesses, reveal that GdBO3 ceramics possessed excellent neutron shielding performance (NSP). The obtained results manifest that GdBO3 ceramics with outstanding heat insulation and NSP have a potential application in a nuclear reactor.

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Section: Resultsmentioning

confidence: 99%

Thermally insulating GdBO₃ ceramics with neutron shielding performance

Dong

et al. 2021

Int J Applied Ceramic Tech

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“…The method of incorporation of pore-forming agents with ceramic powder results can yield a porous structure of closed or poorly interconnected pores. Considerable research work directed at interconnected pore formation has been performed in our group [11][12][13][14]. The formation of interconnected pores is affected not only by the aggregate size [11] and content, but also by the pore-forming agent size [12] and content.…”

Section: Introductionmentioning

confidence: 99%

Effects of Aggregate Content on the Interconnected Pore Formation and Properties of Porous Purging Plug Materials

Wang¹

2019

Ceramics - Silikaty

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The physical properties and microstructure of porous purging plug materials with different aggregate contents and prepared at different firing temperatures were investigated by means of X-ray diffraction, scanning electron microscopy, air permeability, pore size distribution, apparent porosity, bulk density, cold modulus of rupture (CMOR), cold elastic modulus (E) and cold crushing strength (CCS) tests. The results show that the aggregate content had a great effect on the interconnected pore formation and properties of porous purging plug materials. With decreasing aggregate content, the apparent porosity and air permeability increased due to the distance between aggregates increasing and Al(OH) 3 formation, and the pore size distributions changed from a monomodal distribution to a bimodal distribution. The higher temperature facilitated the formation of a denser structure and interconnected pores. In addition, the CCS and porosity were found to follow a simple exponential relationship. When the apparent porosity increased, the CCS decreased, and vice versa.

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Thermally insulating Bi6B10+2xO24+3x (x = − 2, − 1,0,1,2) ceramics with neutron/gamma shielding capability

Chen

et al. 2023

J Aust Ceram Soc

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Effects of nano-alumina content on the formation of interconnected pores in porous purging plug materials

Cited by 23 publications

References 17 publications

Thermally insulating GdBO₃ ceramics with neutron shielding performance

Thermally insulating GdBO₃ ceramics with neutron shielding performance

Effects of Aggregate Content on the Interconnected Pore Formation and Properties of Porous Purging Plug Materials

Thermally insulating Bi6B10+2xO24+3x (x = − 2, − 1,0,1,2) ceramics with neutron/gamma shielding capability

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Effects of nano-alumina content on the formation of interconnected pores in porous purging plug materials

Cited by 23 publications

References 17 publications

Thermally insulating GdBO3 ceramics with neutron shielding performance

Thermally insulating GdBO3 ceramics with neutron shielding performance

Effects of Aggregate Content on the Interconnected Pore Formation and Properties of Porous Purging Plug Materials

Thermally insulating Bi6B10+2xO24+3x (x = − 2, − 1,0,1,2) ceramics with neutron/gamma shielding capability

Contact Info

Product

Resources

About

Thermally insulating GdBO₃ ceramics with neutron shielding performance

Thermally insulating GdBO₃ ceramics with neutron shielding performance