Certainly, it’s important to consider materials of construction for heat exchangers that have a high level of resistance to the corrosive particles found in foam. The specific material used would depend on the particular corrosive substances identified in the foam. Here are some commonly used materials:

1. Stainless Steel: A widely preferred choice, stainless steel demonstrates excellent resistance to a broad range of corrosive substances, including oxygen, certain acids, and saline solutions. Higher grades of stainless steel like 316 offer increased resistance to chlorides.

2. Titanium: Titanium holds up well against chlorides and many other aggressive substances renowned for increased risk of pitting and crevice corrosion. It’s frequently used for marine applications or in processes involving seawater, making it ideal for situations where there’s a risk of foam containing salt particles.

3. Hastelloy: This is an alloy that consists mainly of nickel, molybdenum, and chromium. This combination creates exceptional resistance to harsh acids, including sulfuric and hydrochloric acid, which would be especially beneficial if the foam contains acid particles.

4. Alloy 20: Also known as Carpenter 20, this is a nickel-iron-chromium alloy that was designed for resistance against sulfuric acid. It also resists stress-corrosion cracking well, which can be an issue caused by chloride particles.

5. Duplex Stainless Steel: Duplex stainless steel combines the qualities of ferritic and austenitic steel grades. It exhibits a high resistance to numerous types of corrosion and is particularly well-suited to systems that involve saline or brackish water.

6. Incoloy: This is a range of superalloys made from nickel, iron, and chromium, designed to withstand corrosive environments and high-temperature applications. They have excellent resistance to oxidizing acids, thanks to their chromium component.

Remember, selection of the appropriate material should consider not only corrosion resistance but also compatibility with operational conditions (temperature, pressure) and the cost-effectiveness. Proper material selection is crucial to the longevity, safety, and efficiency of the heat exchanger.