The generation of residual stress in ABS type glaze of commercial bone china

Kim, Hyeong-Jun; Han, Youngho; Kim, Dong Hwan; Kim, Da-Mi; Choi, Jae-Ho; Lee, Sung-Min

doi:10.1016/j.jeurceramsoc.2015.10.022

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…20) We has also studied the rela- tionship between reaction layer and residual stress, obtaining the results that a compressive stress higher than 50 MPa could be produced in the glaze layer when the reaction layer had a thickness larger than 30 μm with a CTE of 14 × 10 −6 / o C which was higher than that of the body or the glaze. 21) Fig. 7 shows a cross section of the glaze layer fired at 1200 o C, where the round particles had calcium and phosphorus as the main component while the needle-shaped ones were affirmed to be an oxide consisting of calcium, aluminum and silicon as the main components.…”

Section: Discussionmentioning

confidence: 99%

Improvement of Glaze Hardness in Commercial Bone China

Kim

Han²,

Kim³

et al. 2015

Journal of the Korean Ceramic Society

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In order to improve the hardness of commercial bone china, we attempted to control the glost firing temperature and apply a chemical strengthening process. When the glost firing time was longer or its temperature was higher than normal conditions, the hardness was improved by approximately 5%. The chemical strengthening process also enhanced the hardness of the glaze by more than 13% compared with bone china. It is believed that the enhancement of the hardness of the glaze was related to the development of residual compressive stress in the glaze due to 1) the increase in the calcium phosphate phase in the interface layer between the body and the glaze after firing, and 2) the increase of the K + concentration on the glaze surface during the chemical strengthening process.

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Section: Discussionmentioning

confidence: 99%

Improvement of Glaze Hardness in Commercial Bone China

Kim

Han²,

Kim³

et al. 2015

Journal of the Korean Ceramic Society

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Degradation Processes of Medieval and Renaissance Glazed Ceramics

et al. 2022

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Corrosion effects in deposit environments (soil, waste pit, etc.), together with the glaze adherence and fit, could cause severe deterioration accompanied by different types of defects or growth of corrosion products. The aim of this work was to identify the source of surface degradation of the lead-glazed ceramics sets from the Prague area from the Romanesque to the Renaissance period. A combination of X-ray fluorescence (XRF), X-Ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy with energy dispersive X-Ray spectroscopy (SEM/EDS), and simultaneous thermal analysis (STA) techniques along with stress state calculations was used to study the defects. Based on the interpretation of the possible sources of the observed defects, four types of degradation effects were schematically expressed for the archaeological samples. It was shown that the glazes were already appropriately chosen during the production of the Romanesque tiles and that their degradation occurred only due to long-term exposure to unsuitable environmental conditions.

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New Glaze Composition for Chemical Strengthening of Bone China

Kim

Han

Park

et al. 2018

J. Korean Ceram. Soc

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In order to improve the hardness of commercial bone china, we suggested a chemical strengthening process and new glaze for its process. New glaze contained about two times more Na 2 O and Al 2 O 3 and had a higher transition temperature than that of commercial frit. Chemical strengthening enhanced the hardness of the new glaze-coated bone china by over 30% compared to that of commercial product. The change of glaze composition influenced potassium ion diffusion distance and depth of strengthened layer during chemical treatment. After chemical strengthening of new glaze-coated bone china, the residual compressive stress inside the glaze was measured and found to be greater than 160 MPa.

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The generation of residual stress in ABS type glaze of commercial bone china

Cited by 3 publications

References 11 publications

Improvement of Glaze Hardness in Commercial Bone China

Improvement of Glaze Hardness in Commercial Bone China

Degradation Processes of Medieval and Renaissance Glazed Ceramics

New Glaze Composition for Chemical Strengthening of Bone China

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