Calcium phosphate coatings for marble conservation: Influence of ethanol and isopropanol addition to the precipitation medium on the coating microstructure and performance

Enrico Sassoni; Gabriela Graziani; Elisa Franzoni; George W. Scherer

doi:10.1016/j.corsci.2018.03.019

Calcium phosphate coatings for marble conservation: Influence of ethanol and isopropanol addition to the precipitation medium on the coating microstructure and performance

Enrico Sassoni, Gabriela Graziani, Elisa Franzoni, George W. Scherer

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

The effect of adding ethanol and isopropanol to aqueous solutions of diammonium hydrogen phosphate, used to create a passivating layer of calcium phosphates over marble, was investigated. Thanks to its weakening effect on the hydration sphere of ions in solution, ethanol allowed complete coverage of marble surface by a crack-free and pore-free layer of octacalcium phosphate. Even better results were obtained using isopropanol, because it has lower adsorption affinity to calcite than ethanol. Treatments involving alcohols provided good acid protection and also restored cohesion among calcite grains in weathered marble.

Original language	English (US)
Pages (from-to)	255-267
Number of pages	13
Journal	Corrosion Science
Volume	136
DOIs	https://doi.org/10.1016/j.corsci.2018.03.019
State	Published - May 15 2018
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
General Materials Science

Keywords

A. Acid solutions
A. Stonework
B. SEM
C. Acid inhibition
C. Atmospheric corrosion
C. Passive films

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10.1016/j.corsci.2018.03.019

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title = "Calcium phosphate coatings for marble conservation: Influence of ethanol and isopropanol addition to the precipitation medium on the coating microstructure and performance",

abstract = "The effect of adding ethanol and isopropanol to aqueous solutions of diammonium hydrogen phosphate, used to create a passivating layer of calcium phosphates over marble, was investigated. Thanks to its weakening effect on the hydration sphere of ions in solution, ethanol allowed complete coverage of marble surface by a crack-free and pore-free layer of octacalcium phosphate. Even better results were obtained using isopropanol, because it has lower adsorption affinity to calcite than ethanol. Treatments involving alcohols provided good acid protection and also restored cohesion among calcite grains in weathered marble.",

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author = "Enrico Sassoni and Gabriela Graziani and Elisa Franzoni and Scherer, {George W.}",

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T1 - Calcium phosphate coatings for marble conservation

T2 - Influence of ethanol and isopropanol addition to the precipitation medium on the coating microstructure and performance

AU - Sassoni, Enrico

AU - Graziani, Gabriela

AU - Franzoni, Elisa

AU - Scherer, George W.

PY - 2018/5/15

Y1 - 2018/5/15

N2 - The effect of adding ethanol and isopropanol to aqueous solutions of diammonium hydrogen phosphate, used to create a passivating layer of calcium phosphates over marble, was investigated. Thanks to its weakening effect on the hydration sphere of ions in solution, ethanol allowed complete coverage of marble surface by a crack-free and pore-free layer of octacalcium phosphate. Even better results were obtained using isopropanol, because it has lower adsorption affinity to calcite than ethanol. Treatments involving alcohols provided good acid protection and also restored cohesion among calcite grains in weathered marble.

AB - The effect of adding ethanol and isopropanol to aqueous solutions of diammonium hydrogen phosphate, used to create a passivating layer of calcium phosphates over marble, was investigated. Thanks to its weakening effect on the hydration sphere of ions in solution, ethanol allowed complete coverage of marble surface by a crack-free and pore-free layer of octacalcium phosphate. Even better results were obtained using isopropanol, because it has lower adsorption affinity to calcite than ethanol. Treatments involving alcohols provided good acid protection and also restored cohesion among calcite grains in weathered marble.

KW - A. Acid solutions

KW - A. Stonework

KW - B. SEM

KW - C. Acid inhibition

KW - C. Atmospheric corrosion

KW - C. Passive films

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DO - 10.1016/j.corsci.2018.03.019

M3 - Article

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SN - 0010-938X

VL - 136

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JO - Corrosion Science

JF - Corrosion Science

ER -

Calcium phosphate coatings for marble conservation: Influence of ethanol and isopropanol addition to the precipitation medium on the coating microstructure and performance

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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