中文

Chinese Journal of Nature ›› 2016, Vol. 38 ›› Issue (1): 39-44.doi: 10.3969/j.issn.0253-9608.2016.01.006

• Review Article • Previous Articles     Next Articles

NaCl crystal and its roles on the blister damage at the wall-painting of Mogao Grottoes

HU Hongyan①, CHEN Gangquan②, QIAN Ling①, RONG Bo③, JIN Zhiliang①, ZHOU Tie③,SU Bomin②, LÜ Gongxuan①   

  1. ①State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; ②National Ancient Mural Protection Engineering Technology Research Center, The Conservation Research Institute of The Dunhuang Academy, Dunhuang 736200, Gansu Province, China; ③Key Scientific Research Base of Ancient Polychrome Pottery Conservation, State Administration for Cultural Heritage, Emperor Qinshihuang’s Mausoleum Site Museum, Lintong 710600, Shaanxi Province, China
  • Received:2015-09-02 Online:2016-02-25 Published:2016-02-23

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Abstract: Salt dissolution and crystallization are the important reasons of the blister diseases of mural paints at Mogao Grottoes. The main components, forms and its damage mechanism for murals blister diseases were studied. NaCl crystal was present in little grain salt, usually adhered or covered by some amorphous material. NaCl salt crystal aggregated in the form of a cubic or near cubic state in the blister samples. The damages of the murals blister diseases were caused by the dissolving and crystallizing of NaCl salt. Na2SO4 crystal and its crystallized water led to more serious damages. Na2SO4 crystal and hydrates shrinked pores, which reduced the limitation pressure of NaCl crystal among the pores.