Corrosion of stainless steel coated with a ZrO 2 film in a hydrogen sulfide gas environment
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Corrosion of stainless steel coated with a ZrO2 film in a hydrogen sulfide gas environment Lizhi Zhang1 · Sansartuya Dorjpalam1 · Guojun Ji1 · Jingsi Peng1 Received: 7 February 2020 / Accepted: 7 April 2020 © Springer Nature Switzerland AG 2020
Abstract A zirconia sol was prepared by the sol–gel method and coated on the surface of stainless steel substrates. The gas corrosion test was carried out for the stainless steel substrates and for the coated samples using a high-temperature and high-pressure reactor. The coated samples and the substrates were placed in the reaction kettle, and it was filled with the H2S gas at the pressures of 0.6, 0.8, and 1 MPa. After standing at room temperature for 24 h, the samples were observed by optical microscopy and a scanning electron microscopy, and it was found that as the pressure increases, the corrosion of the stainless steel substrates are more severe, while the film samples show only slight pitting corrosion. The experimental results show that in the corrosive H2S gas environment, the stainless steel samples coated with the ZrO2 film can effectively block the H2S gas corrosion on the stainless steel substrate and reduce the hydrogen bubbling and hydrogen-induced cracking caused by gas corrosion. This finding has important practical significance for improving the service life of oil pipelines and reducing the occurrence of oil spills and other accidents.
* Guojun Ji, [email protected] | 1College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China. SN Applied Sciences
(2020) 2:915
| https://doi.org/10.1007/s42452-020-2718-z
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Research Article
SN Applied Sciences
(2020) 2:915
| https://doi.org/10.1007/s42452-020-2718-z
Graphic abstract
Keywords ZrO2film · H2S · Hydrogen bubbling (HB) · Scanning electron microscope (SEM)
1 Introduction Petroleum and natural gas are the mainstay of the current energy consumption and must be transported to energy shortage areas to alleviate the problem of energy shortage due to the uneven distribution of Petroleum and natural gas reserves [1]. Oil and gas transportation is a large problem, and in particular, gas in high-sulfur gas reservoirs containing H2S is extremely corrosive to mining and transport equipment. Corrosion damage of oil and gas pipelines has become the main cause of many accidents. This makes pipeline, safety particularly important. Pipelines are another special mode of transportation that is
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an alternative to the transport modes such as roads and shipping. Pipeline transportation has the advantages of continuity, stability, large transport capacity, convenient management and long-range transportation [2]. However, oil and natural gas contain sulfides that are highly unstable and decompose to produce H 2S gas. These sulfides are extremely corrosive to transportation pipelines. Currently, while corrosion-resistant alloy materials suitable for addressing H2S corrosion are available, these materials are expensive, so that carbon steel is
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