Preparation of hydroxyapatite coating for the conservation of gypsum crust on historic limestones

被引：6

作者：

Dong, Taoling ^{[1
]}

Liu, Yan ^{[1
]}

He, Lu ^{[1
]}

Yang, Fuwei ^{[1
]}

Zhang, Kun ^{[1
]}

机构：

[1] Northwest Univ, Key Lab Preservat & Conservat Cultural Heritage, Educ Minist, Xian 710069, Peoples R China

来源：

MATERIALS LETTERS-X | 2021年 / 12卷

基金：

中国国家自然科学基金;

关键词：

Thin films; Surfaces; Hydroxyapatite coating; Conservation; Historic limestones; CONSOLIDATION; STONE;

D O I：

10.1016/j.mlblux.2021.100103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new preparation method of hydroxyapatite coating was proposed for the conservation of gypsum crust on historic limestones. by successive introduction of calcium and phosphorus sources into the crust by surface permeation. Due to the formation of hydroxyapatite coating, both surface protection and integral consolidation of the gypsum crust can be accomplished. The performances of the hydroxyapatite coating were investigated by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffractometry, water stability, capillary water uptake, color difference and adhesion strength test. The experimental results indicated that the hydroxyapatite coating would be a good solution for the conservation of the gypsified historic limestone surface.

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页数：4

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