NDLI: Mechanically strengthened new Hagi porcelain developed by controlling the chemical environment of iron

Content Provider	Springer Nature Link
Author	Kubuki, Shiro Iwanuma, Jun Akiyama, Kazuhiko Mikuni, Akira Nishida, Tetsuaki
Copyright Year	2012
Abstract	In order to enhance the mechanical strength of Hagi Porcelain (Hagiyaki), one of the oldest and famous potteries in Japan, new preparation condition was examined. Tempered Hagi porcelain, denominated as ‘Hagi Porcelain B’, was prepared with the Porcelain clay originating from Daido district, Yamaguchi Prefecture, Japan. Structural change of ‘Hagi Porcelain B’ was investigated by means of 57Fe-Mössbauer spectroscopy, X-ray diffractometry (XRD) and three-point bending test. Mechanical strength of the ‘original Hagi Porcelain B’ was estimated to be 43.1 MPa by means of the three-point bending test, while much larger value of 104.5 MPa could be achieved when tempered by a chemical modification. Mössbauer spectrum of the ‘original Hagi porcelain B’ was composed of a paramagnetic doublet and a magnetic sextet due to Fe(III) of γ-Fe2O3(maghemite), while only one paramagnetic doublet due to to octahedral Fe(II)O6 was observed for the ‘tempered Hagi Porcelain B’ with isomer shift and quadrupole splitting values of 1.13 and 2.15 mm s−1, respectively. It is considered that the absence of magnetic phase causes an increase of the mechanical strength because the maghemite phase has a defect spinel structure. These results indicate that mechanical strength of the ‘Hagi porcelain B’ could be enhanced by controlling the sintering condition.
Starting Page	173
Ending Page	180
Page Count	8
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	211
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-04-27
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Hagi porcelain 57Fe-Mössbauer spectroscopy Three-point bending test Sekaninaite Maghemite Condensed Matter Physics Atomic, Molecular, Optical and Plasma Physics Surfaces and Interfaces, Thin Films Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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