When would you want to have a corrosive reaction?

I can find when you wouldn't want to have one but not when you wouldn't. Please help!!

Thank you

A corrosive reaction refers to a chemical reaction that causes the breakdown or decay of materials through a destructive chemical process. Typically, corrosive reactions are considered unwanted or undesirable because they can damage or destroy objects, structures, or living organisms. However, there may be certain situations where a corrosive reaction is intentionally used or desired. Here are a few examples:

1. Cleaning and maintenance: Corrosive substances, such as strong acids or alkaline solutions, can be used to remove stubborn stains, rust, or mineral deposits from surfaces, tools, or equipment. For instance, hydrochloric acid (a corrosive substance) can be employed to clean concrete or metal surfaces that have accumulated hard-to-remove deposits.

2. Chemical manufacturing: In some industries, corrosive reactions are necessary for specific manufacturing processes. For example, the production of certain chemicals or the synthesis of compounds may require corrosive reactions as part of the desired chemical transformation.

3. Etching: In the field of electronics, corrosive substances like acids or plasma can be used for selective material removal, also known as etching. This process is instrumental in creating intricate patterns on circuit boards or silicon chips.

4. Scientific research: Corrosive reactions are often studied and analyzed in the field of chemistry to understand their mechanisms, effects, and potential applications. Scientists sometimes deliberately induce corrosive reactions to investigate the properties of materials or to develop new chemical compounds.

It's important to note that working with corrosive substances requires proper safety precautions, protective equipment, and adherence to handling guidelines to minimize the risks associated with their use. Always consult experts, follow safety protocols, and ensure appropriate training before attempting any activities involving corrosive materials.