Titanium bar products are resistant to corrosion characteristics

Titanium is a metal having a strong tendency to passivation , and oxidation in air or in a neutral aqueous solution can quickly generate a stable oxide layer of protective film , even if the film is destroyed for some reason , can be quickly restored automatically. Therefore, titanium has excellent corrosion resistance in oxidizing , neutral medium , made ​​of titanium with titanium products also have strong corrosion resistance , widely used in the sealing surface material container equipment to address equipment sealing surface crevice corrosion problems.

Because of the great passivating titanium , in many cases, when in contact with dissimilar metals, corrosion is not accelerating , which may accelerate the corrosion of dissimilar metals .titanium standard parts When such a low concentration of non -oxidizing acids , if Pb, Sn, Cu or Ti alloy Monel galvanic contacts , the corrosion rate of these materials , and titanium is not affected. In the hydrochloric acid when contacted with a low Ti steel , the nascent hydrogen generated on the surface of titanium , titanium oxide film destruction , not only causes embrittlement of titanium , titanium and accelerate corrosion of titanium which may be due to a high degree of hydrogen active period.

Titanium iron content of certain media affect corrosion of iron in addition to the reasons for the increase in raw material reasons , often when soldering iron stain penetration weld , so that the local iron content increased weld , which when etching having a non-uniform properties. When using iron titanium support equipment, products made ​​of iron and titanium contact surface iron contamination is almost inevitable in the region accelerated corrosion of iron contamination , especially in the presence of hydrogen . When the titanium oxide film surface contamination to mechanical damage , the infiltration of a metal hydroxide , based on the temperature , pressure, etc. , corresponding to the occurrence of hydrogen diffusion , which have different levels of the titanium embrittlement . Therefore, titanium and moderate temperature and moderate pressure hydrogen system used to avoid surface iron contamination.

In general , titanium pitting does not occur . Made of titanium products also has anti- corrosion fatigue stability.tittanium bar Crevice corrosion resistance of titanium is better, especially Ti-0.3Mo-0.8Ni and Ti-0.2Pd alloy , so Ti-0.3Mo-0.8Ni and Ti-0.2Pd widely used to make industrial products.