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| 火灾辐射热环境中304不锈钢燃气波纹软管表面氧化行为研究 |
| Investigation of Surface Oxidation Behavior of 304 Stainless Steel Gas Corrugated Hoses under Fire Radiant Heat Conditions |
| 投稿时间：2025-08-21 修订日期：2026-01-28 |
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| 基金项目:国家重点研发计划（2023YFC3304103） |
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| 中文关键词: 火灾调查 刑事技术 304不锈钢 高温氧化 |
| 英文关键词:Fire Investigation Forensic Science 304 Stainless Steel High-Temperature Oxidation |
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| 中文摘要: |
| 本文以室内燃气爆炸火灾为背景,研究了304不锈钢燃气波纹管在600-1000℃高温辐射热环境中其表面氧化层及其氧化行为特征。通过RGB分析、SEM-EDS和XRD对比分析了空白样品与试验样品的表面宏观形貌、微观结构和元素变化、氧化层物相组成,解释了304不锈钢波纹管在不同温度下的氧化层生长规律以及氧化物组成特点。研究结果表明,随着温度的升高,燃气波纹管表面氧化层形貌、颜色也随之改变。高温氧化后不锈钢波纹管表面氧化层呈层状,成分主要为Fe?O?、FeCr?O?和NiCr?O?,且氧化程度随温度的升高而增加。本研究结果进一步证明了火场高温环境中金属表面氧化层的形貌和物相组成与火场温度之间存在一定相关性,为火灾调查提供了理论依据。 |
| 英文摘要: |
| This paper investigates the surface oxide scale and its oxidation behavior characteristics of 304 stainless steel gas corrugated hoses in a high-temperature radiant heat environment (600-1000℃) under indoor gas explosion fire conditions. The surface macroscopic morphology, microstructure, elemental changes, and oxide phase composition of both unexposed and experimentally oxidized samples were comparatively analyzed using macroscopic color analysis, scanning electron microscopy with energy-dispersive spectroscopy, and X-ray diffraction. This analysis elucidates the oxide scale growth law and the characteristics of oxide composition of 304 stainless steel corrugated hoses at different temperatures. The results show that the morphology and color of the oxide scale on the gas corrugated hose surface change with increasing temperature. After high-temperature oxidation, the surface oxide scale of the stainless steel corrugated hose exhibits a layered structure, primarily composed of Fe?O?, FeCr?O?, and NiCr?O?, with the degree of oxidation increasing with temperature. The results of this study further demonstrate a certain correlation between the morphology and phase composition of the oxide scale on the metal surface and the fire temperature in a high-temperature fire environment, providing a theoretical basis for fire investigation. |
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