Titanium
Titanium has a strong affinity for carbon and nitrogen, which causes carbon to be bound in stable carbides. This prevents intergranular corrosion.
Physical-Chemical Mechanism of Action
Titanium reacts strongly with carbon and nitrogen. It forms stable carbides that bind the carbon. These carbides protect the material from corrosion through intergranular processes.
Metallurgical Relevance & Risks in Welding
At high carbon content, titanium can develop a strong affinity for carbon, which can lead to rapid oxidation. This can impair the strength and structure of the material. It is important to control the carbon content in the weld pool.
Workshop Practice & Action Instructions
To minimize the negative effects of titanium, the carbon content in the weld pool should be kept below 0.1%. Use a suitable deoxidizer such as silicon or potassium hydroxide to bind carbon and prevent corrosion.