Investigation of corrosivity of HCFO-1233zd(E) with typical metals in storage conditions

doi:10.16265/j.cnki.issn1003-3033.2026.06.1183

Abstract

Abstract:

In order to investigate the storage compatibility of the novel environmentally friendly fire extinguishing agent HCFO-1233zd(E), a self-designed corrosion test platform for gas extinguishing agent was utilized. Five representative metal materials commonly used in storage containers (304 stainless steel, Q235 carbon steel, 6061 aluminum alloy, H59 brass, and T2 copper) were selected to simulate the corrosion effects of HCFO-1233zd(E) under high pressure and alternating high-low temperature storage conditions. Corrosion rate, surface morphology, and corrosion products were characterized using an electronic balance, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The results indicated that the corrosion rates of the five metals follow the order: Q235 carbon steel > 6061 aluminum alloy > 304 stainless steel > H59 brass > T2 copper. Under simulated storage conditions, HCFO-1233zd(E) induced a combined corrosion morphology dominated by uniform corrosion accompanied by localized pitting, with aggregation of blocky and flaky corrosion products observed on the metal surfaces. HCFO-1233zd(E) underwent decomposition under test conditions, generating highly corrosive HF and HCl, which reacted with the metal substrates to form halides. The generated metal halides, in turn, catalyze the decomposition of HCFO-1233zd(E). Meanwhile, short-chain organic compounds produced from the decomposition underwent chain polymerization, forming medium- to long-chain halogenated hydrocarbons that deposited on the metal surfaces. These organic deposits provided a certain physical barrier, which helped to retard further progression of the corrosion process.

Key words: storage condition, trans-1-Chloro-3,3,3-trifluoropropene(HCFO-1233zd(E)), typical metal, corrosion behaviors, corrosion rate, corrosion products

CLC Number:

X941

Liu Hao, Lyu Xizhen, Chen Ruiyu. Investigation of corrosivity of HCFO-1233zd(E) with typical metals in storage conditions[J]. China Safety Science Journal, 2026, 36(6): 161-169.

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金属种类	M/g	M₁/g	差值/g	腐蚀速率/ (mm/a)
304不锈钢	1. 839 52	1. 839 25	0. 000 27	0. 006 283
Q235碳钢	1. 903 52	1. 903 12	0. 000 394	0. 009 168
6061铝合金	0. 654 50	0. 654 21	0. 000 288	0. 006 71
H59黄铜	1. 712 09	1. 711 84	0. 000 252	0. 005 862
T2紫铜	1. 862 80	1. 862 58	0. 000 214	0. 004 982