Six types of samples including urushi, urushi tree and black coating films taken from ancient Buddha images were examined by analyses of PIXE, organic element and FT-IR to identify with urushi another material. Based on the results of three analytical experiments above mentioned, the coating materials aging over hundreds of years were identified with weathered urushi films mixed with other material. Further investigation may reveal the urushi coating techniques used in the past.

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References

T. Kenjo, Science for Conservation 21, 47 (1982). Google Scholar
W. Kawanobe, Science for Conservation 35, 49 (1996). Google Scholar
S. Futatsugawaet al., International Journal of PIXE 3, 319 (1993), DOI: 10.1142/S012908359300029X. Link, Google Scholar
K. Seraet al., International Journal of PIXE 2, 325 (1992), DOI: 10.1142/S0129083592000348. Link, Google Scholar
K. Sera and S. Futatsugawa, Nucl. Instr. and Meth. B 109/110, 99 (1996), DOI: 10.1016/0168-583X(95)01208-7. Crossref, Web of Science, Google Scholar
J. Kumanotahi, J. the Japan Society of Colour Material 70, 808 (1997). Crossref, Web of Science, Google Scholar
T. Nakasato, Science for Conservation 24, 1 (1985). Google Scholar
T. Kenjo, J. the Japan Society of Colour Material 46, 420 (1973). Web of Science, Google Scholar
O. Watanabe and K. Nagai, J. Chemical Society of Japan 2, 113 (1999). Web of Science, Google Scholar
E. Obatayaet al., Mokuzai Gakkaishi 44, 327 (1998). Web of Science, Google Scholar