What materials can effectively prevent molten salt corrosion?

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Based on the previously mentioned background that molten salt corrosion will significantly shorten the life of equipment and requires targeted prevention and control, the following is a classification of mainstream materials that can effectively resist molten salt corrosion.: 1. Metal corrosion-resistant alloy nickel-based alloy: Hastelloy-N, GH3535 and other brands can serve stably for a long time in 650°C fluoride molten salt and are the preferred materials for the core structure of molten salt reactors. Special stainless steel: Jiugang's self-developed 347H niobium-containing austenitic stainless steel has molten salt corrosion resistance comparable to imported products and is widely used in molten salt storage tanks and pipelines in solar thermal power stations. Other corrosion-resistant metals: NS series, Incoloy alloy, etc. are suitable for complex molten salt working conditions containing Cl⁻ and H₂S. Some composite pipes can balance strength and low cost. 2. High-performance engineering ceramics silicon nitride ceramics: Extremely chemically inert to chloride and sulfate molten salt, weight loss at 500℃/100 hours