提高AISI型ss304l在氯化物介质中的耐点蚀性

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Bulletin of Materials Science Pub Date : 2025-09-25 DOI:10.1007/s12034-025-03477-4

Gopinath Shit

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引用次数: 0

摘要

化学、核、制药、食品、海洋、石油化工和流体介质中的氯离子会引起不锈钢（SS）的点蚀。在模拟海洋环境（SME）和模拟体液（SBF）溶液中，对SS 304L的抗点蚀性能进行了评价。溶液退火的粗晶（CG） SS 304L在液态N2温度下发生严重塑性变形（SPD，高达90%）。这导致了超细晶粒（UFG）微观结构的形成。UFG样品在1050℃下进一步退火1小时，并以7 kGy的剂量单独照射伽马射线。在接收的CG、UFG变形和UFG变形试样中发现了点蚀，随后是退火（1050°C， 1小时）的试样，而在SME和SBF溶液中经过伽马射线照射后的UFG试样没有观察到点蚀。

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Improvement of pitting corrosion resistance of AISI type SS 304L in chloride medium

Chloride ions in the chemical, nuclear, pharmaceutical, food, marine, petrochemical industries, and body fluid medium cause pitting corrosion in stainless steel (SS). In this research, the pitting corrosion resistance behaviour of SS 304L was evaluated in simulated marine environment (SME) and simulated body fluid (SBF) solutions. A solution annealed coarse-grain (CG) SS 304L was severely plastic deformed (SPD, up to 90%) at liquid N₂ temperature. This leads to the formation of ultra-fine grain (UFG) microstructure. UFG specimens were further annealed at 1050°C for 1-h, and gamma-ray irradiated separately at a dose of 7 kGy. Pitting was evidenced for the as-received CG, UFG-deformed and UFG-deformed, followed by annealed (1050°C for 1 h) specimens, whereas pitting corrosion was not observed for the UFG specimen after gamma-ray irradiation in both SME and SBF solutions.

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来源期刊

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.