1 The effect of iron content on titanium mesh
Experiments show that when Monel alloy, iron and titanium mesh are in contact to form a galvanic couple, the corrosion of these materials is accelerated, and the titanium mesh is not affected.
The amount of iron contained in the titanium mesh affects the corrosion resistance in certain media. In addition to the causes of the increase in iron, the iron that has been contaminated during welding often penetrates into the weld bead, which increases the amount of iron in the weld bead. Corrosion at this time has non-uniform properties. When iron is used to support the titanium mesh, the iron contamination on the iron-titanium contact surface is almost unavoidably accelerated in the iron stained area, especially in the presence of hydrogen.
When the titanium oxide film on the contaminated surface is mechanically damaged, when the titanium mesh is in contact with the iron, a new-born hydrogen is generated on the surface of the titanium mesh, which destroys the oxide film of the titanium mesh, not only causes the hydrogen embrittlement of the titanium mesh, but also accelerates the corrosion of the titanium mesh. It is due to the high activity of titanium mesh on hydrogen. Hydrogen seeps into the metal. According to the conditions of temperature, pressure, etc., hydrogen diffuses accordingly, which makes the titanium mesh produce different levels of hydrogen embrittlement. Therefore titanium meshes are used in medium and medium pressure and hydrogen systems to avoid surface iron contamination.
2 Effect of dioxime salt solution on titanium mesh
Titanium mesh has excellent corrosion resistance for most salt solutions, such as titanium mesh corrosion resistance in chloride solutions compared to high chromium nickel steel, and there is no pitting phenomenon. Titanium has good crevice corrosion resistance. Under normal circumstances, titanium mesh will not be pitted. Titanium mesh al
