I'd go for it. If the logs are still solid, no rot, then they should be fine.
If you have a choice, use hard wood logs since they'll have a greater heat content per ton, and will contribute to less creosote in the stove pipe. However, I doubt that's a option in your area.
To answer your question, I don't see how drift wood logs would contribute to more or less corrosion.
One suggestion is use at least double wall pipe since this will keep temps up in the inner pipe, contributing to better drafting and less buildup of creosote.
Also, a airtight stove will pay for itself in reduced wood consumption.
Good luck, RJR
Ps, I've used wood heat for the past 30 years. Let the power go out, I'm ready

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