Titanium Etching, Descaling, and Pickling

Grinding. Owing to the pyrophoricity of titanium dust, grinding must be conducted with a lubrication liquid to avoid explosion hazards. 

Blasting. Owing to the intrinsic hardness of rutile, which is higher than that of quartz, blasting can be performed using harder minerals such as corundum or zircon rather than silica as abrasive medium. After operation, the workpiece must be carefully pickled for a few seconds in the HF-HNO, mixture in order to remove the abrasive particles embedded in the metal, washed with deionized water, and dried. 

Cleaning and degreasing. These operations can be performed in alkaline solutions, organic solvents, or emulsions, and the procedures are similar to those used for other metals, but careful attention must be exerted to avoid hydrogen embrittlement in alkaline solutions. 

---