The corrosion-resistance of industry pure titanium in various of medium
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The document summarizes the corrosion resistance of pure titanium in various mediums and under different conditions. Key findings include: 1) Pure titanium exhibits excellent corrosion resistance in most inorganic acids and salt solutions, as well as some organic acids, with corrosion rates often below 0.127 mm/year. 2) Higher concentrations, temperatures, and the presence of other compounds can negatively impact corrosion resistance. For example, corrosion increases in hydrochloric acid above 10% and in sulfuric acid above 60%. 3) Pure titanium also demonstrates excellent corrosion resistance in some organic compounds like benzene and carbon tetrachloride, especially in steam and liquid states.
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The corrosion-resistance of industry pure titanium in various of medium
- 1. The corrosion-resistance of industry pure titanium in various of medium candice_li@yahoo.cn The corrosion-resistance of industry pure titanium in various of medium concentratio corrosion/mm/a Corrosion medium temperature/℃ n（%） (year) grade Room 1 temperature 0.000/0.345 excellent/good / boiling Room 5 temperature 0.000/6.530 excellent/bad / boiling inorganic Hydrochloric Room acid acid 10 temperature 0.175/40.87 good/bad / boiling Room 20 temperature / 1.340/— bad/— — 35 Room 6.660/— bad/—
- 2. temperature / — Room 5 temperature 0.000/13.01 excellent/bad / boiling Room 10 temperature 0.230/— good/— /— Room Vitriolic 60 temperature 0.277/— good/bad acid /— Room 80 temperature 32.660/— bad/— /— Room 95 temperature 1.400/— bad/— /— Room excellent/ 37 temperature 0.000/<0.127 nitric acid excellent / boiling 64 Room 0.000/<0.127 excellent/
- 3. temperature excellent / boiling Room 95 temperature 0.0025/— excellent/— /— Room 10 temperature 0.000/6.400 excellent/bad / boiling Room phosphoric acid 30 temperature 0.000/17.600 excellent/bad / boiling Room 50 temperature 0.097/— excellent /— /— Room excellent/ Chromic acid 20 temperature <0.127/<0.127 excellent / boiling Room excellent/ nitric acid + 1:3 temperature 0.0040/0.127 excellent hydrochloric acid / boiling 3:1 Room <0.127/— excellent /—
- 4. temperature /— Room 7:3 temperature <0.127/— excellent /— Vitriolic /— acid + vitriolic acid Room 4:6 temperature <0.127/— excellent /— /— Room excellent/ Acetic acid 100 temperature 0.000/0.000 excellent / boiling Room Formic acid 50 temperature 0.000/— excellent / /— organic a Room cid 5 temperature 0.127/29.390 good/bad / boiling Oxalic acid Room 10 temperature 0.008/— excellent /— /— Lactic acid 10 Room 0.000/0.033 excellent/
- 5. temperature excellent / boiling 25 / boiling —/0.028 —/ excellent 10 / boiling —/1.270 —/good Methane acid 25 —/100 —/2.440 —/bad 50 —/100 —/7.620 —/bad Room excellent/ Dan ning acid 25 temperature <0.127/<0.127 excellent / boiling Room excellent/ Citric acid 50 temperature <0.127/<0.127 excellent / boiling Room excellent/ Stearic acid 100 temperature <0.127/<0.127 excellent / boiling 10 / boiling —/0.020 —/excellent Room excellent/ aqueous 20 temperature <0.127/<0.127 sodium hydroxide excellent alkali / boiling Room excellent/ 50 <0.0025/0.0508 temperature excellent
- 6. / boiling 73 / boiling —/0.127 —/good 10 / boiling —/<0.127 —/ excellent potassium hydroxide 25 / boiling —/0.305 —/good 50 30 / boiling 0.000/2.743 excellent/bad Room ammonium hydroxide 28 temperature 0.0025/— excellent/— /— Room excellent/ sodium carbonate 20 temperature <0.127/<0.127 excellent / boiling Room baking ammoria 20 temperature 0.0708/— excellent /— /— Room excellent/ ferric chloride 40 temperature 0.000/0.002 excellent Inorganic /95 salt ferrous chloride 30 0.000/<0.127 Room solution Chlorinated and lead 10 <0.127/<0.127 excellent/ temperature cuprous chloride 50 <0.127/<0.127 excellent / boiling ammonium chloride 10 <0.127/<0.000
- 7. calcium chloride 10 <0.127/<0.000 aluminium chloride 25 <0.127/<0.127 magnesium chloride 10 <0.127/<0.127 nickel chloride 5-10 <0.127/<0.127 barium chloride 20 <0.127/<0.127 copper sulfate 20 <0.127/<0.127 20℃ ammonium sulfate <0.127/<0.127 saturated sodium sulfate 50 <0.127/<0.127 20℃ Zincum Snlfuricum <0.127/<0.127 saturated 10 <0.127/<0.127 cuprous sulfate 30 <0.127/<0.127 Room silver nitrate 11 temperature <0.127/— excellent /— /— benzene（contain little Steam and 80 0.005 HCl、NaCl） liquid organic c carbon tetrachloride As above 0.005 excellent ompound tetrachloroethylene 100% Steam boiling 0.0005 （stable） and liquid
- 8. tetrachloroethylene 0.0005 （H2O） chloroform 0.003 chloroform 0.127 good （H2O） 99% Steam triclene 0.00254 and liquid excellent triclene 99 0.00254 （stable） formaldehyde 37 0.127 good formaldehyde 50 0.305 good （containt2.5%H2SO4）