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Characteristics of Commercially Pure Titanium and Titanium Alloys- TJC STEEL.

11/3/2021

 
Titanium alloy has the advantages of low density, high specific strength, good toughness, good corrosion resistance and good machining performance, [TJC STEEL]which makes it an ideal structural material for aerospace engineering.  
 
Titanium alloy is a new kind of structural material, it has excellent comprehensive properties, such as low density (~4.5g cm-3), high specific strength and specific fracture toughness, good fatigue strength and crack propagation resistance, good low temperature toughness, excellent corrosion resistance, the highest operating temperature of some titanium alloys is 550ºC, expected up to 700ºC.  Therefore, it is increasingly[TJC STEEL] widely used in aviation, chemical industry, medical treatment, shipbuilding and other industrial sectors, rapid development.  
 
Another significant characteristic of titanium is strong corrosion resistance, which is the affinity of titanium to oxygen is particularly large, can generate a layer of dense oxide film on its surface, can protect titanium from medium corrosion.  Titanium metal can form passivated oxide film on the surface in most aqueous solutions.  [TJC STEEL]Therefore, titanium has good stability in acidic, alkaline, neutral salt aqueous solution and oxidizing medium, but in a certain medium, can continuously dissolve titanium oxide film on the surface, titanium in this medium will be corroded.  For example, in hydrofluoric acid, concentrated hydrochloric acid, fluvial acid, and phosphoric acid, the titanium is corroded as the solution dissolves the oxide film on the titanium surface.  If oxidant or some metal ions are added to these solutions, the oxide film on the titanium surface is protected.  
 

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