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Corrosion inhibitor used for protecting ancient cast iron antiques

A technology for protection of cultural relics and corrosion inhibitor, applied in the field of corrosion inhibitor, can solve problems such as changing the appearance of cultural relics, and achieve the effect of improving corrosion inhibition effect and good corrosion inhibition.

Inactive Publication Date: 2010-10-13
中国文化遗产研究院
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Problems solved by technology

Abstracts of the Proceedings of the National Symposium on Archeology and Cultural Relics Protection Chemistry, Xi’an 1989, 20.], but tannic acid will form a purple-black film on the surface of ironware, which greatly changes the appearance of cultural relics

Method used

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  • Corrosion inhibitor used for protecting ancient cast iron antiques
  • Corrosion inhibitor used for protecting ancient cast iron antiques
  • Corrosion inhibitor used for protecting ancient cast iron antiques

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Embodiment Construction

[0013] According to the particularity of iron cultural relics, the present invention screens out several industrial corrosion inhibitors that have been quite mature in industrial research and application, uses Z30 cast iron to simulate ancient cast iron samples, and compares the performance with the corrosion inhibitor of the present invention. Compare and describe in detail the mechanism of action of the corrosion inhibitor of the present invention.

[0014] In the corrosion of ancient ironware, Cl - It will greatly promote the electrochemical reaction of ironware, and at the same time, Cl - It can also accelerate the progress of local corrosion such as pitting corrosion, stress corrosion, intergranular corrosion and crevice corrosion, which is the biggest factor affecting the corrosion rate of ironware. Therefore, the present invention selects 3.5% NaCl solution as the corrosion environment, and compares and analyzes the corrosion inhibition performance of different corrosi...

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Abstract

The invention relates to a corrosion inhibitor used for protecting ancient cast iron antiques. The corrosion inhibitor comprises the following components: ethanolamine, benzotriazol and sodium gluconate, wherein the ratio of the ethanolamine to the benzotriazol to the sodium gluconate is 1.0-2.0:8.0-9.0:2.0-3.0 (mole ratio). The ethanolamine, the benzotriazol and the sodium gluconate play a role in coordinating corrosion inhabitation after being mixed, the effect of inhibiting corrosion is obviously improved, and the corrosion inhibitor has higher corrosion inhibition performance on Z30 cast iron which is a simulated antique cast iron material.

Description

technical field [0001] The invention belongs to the research of corrosion inhibitors, in particular, relates to a corrosion inhibitor used to protect cast iron cultural relics. Background technique [0002] my country is one of the earliest countries in the world to produce and manufacture ironware. Ironware has run through the history of thousands of years in our country, which embodies the characteristics of culture, politics, military affairs, life and other aspects of our country in each era. It is important in the study of history and technological development. play an important role. However, since iron is easily corroded in humid air, the preservation and protection of iron cultural relics has always been the focus and difficulty in the protection of cultural relics. In the protection of iron cultural relics, corrosion inhibition is a crucial step. The use of corrosion inhibitors for corrosion protection is a common and effective method. At present, the commonly use...

Claims

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Application Information

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IPC IPC(8): C23F11/14
Inventor 李园马清林
Owner 中国文化遗产研究院
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