the corrosion-resistance of industry pure titanium in various of medium
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The corrosion-resistance of industry pure titanium in various of mediumTRANSCRIPT
The corrosion-resistance of industry pure titanium
in various of medium
The corrosion-resistance of industry pure titanium
in various of medium
medium
concentratio
n（%）
temperature/℃
corrosion/mm/a
(year)
Corrosion
grade
inorganic
acid
Hydrochloric
acid
1
Room
temperature
/ boiling
0.000/0.345 excellent/good
5
Room
temperature
/ boiling
0.000/6.530 excellent/bad
10
Room
temperature
/ boiling
0.175/40.87 good/bad
20
Room
temperature /
—
1.340/— bad/—
35 Room 6.660/— bad/—
temperature /
—
Vitriolic
acid
5
Room
temperature
/ boiling
0.000/13.01 excellent/bad
10
Room
temperature
/—
0.230/— good/—
60
Room
temperature
/—
0.277/— good/bad
80
Room
temperature
/—
32.660/— bad/—
95
Room
temperature
/—
1.400/— bad/—
nitric acid
37
Room
temperature
/ boiling
0.000/<0.127
excellent/
excellent
64 Room 0.000/<0.127 excellent/
temperature
/ boiling
excellent
95
Room
temperature
/—
0.0025/— excellent/—
phosphoric acid
10
Room
temperature
/ boiling
0.000/6.400 excellent/bad
30
Room
temperature
/ boiling
0.000/17.600 excellent/bad
50
Room
temperature
/—
0.097/— excellent /—
Chromic acid 20
Room
temperature
/ boiling
<0.127/<0.127
excellent/
excellent
nitric acid +
hydrochloric acid
1:3
Room
temperature
/ boiling
0.0040/0.127
excellent/
excellent
3:1 Room <0.127/— excellent /—
temperature
/—
Vitriolic
acid + vitriolic acid
7:3
Room
temperature
/—
<0.127/— excellent /—
4:6
Room
temperature
/—
<0.127/— excellent /—
organic a
cid
Acetic acid 100
Room
temperature
/ boiling
0.000/0.000
excellent/
excellent
Formic acid 50
Room
temperature
/—
0.000/— excellent /
Oxalic acid
5
Room
temperature
/ boiling
0.127/29.390 good/bad
10
Room
temperature
/—
0.008/— excellent /—
Lactic acid 10 Room 0.000/0.033 excellent/
temperature
/ boiling
excellent
25 / boiling —/0.028 —/ excellent
Methane acid
10 / boiling —/1.270 —/good
25 —/100 —/2.440 —/bad
50 —/100 —/7.620 —/bad
Dan ning acid 25
Room
temperature
/ boiling
<0.127/<0.127
excellent/
excellent
Citric acid 50
Room
temperature
/ boiling
<0.127/<0.127
excellent/
excellent
Stearic acid 100
Room
temperature
/ boiling
<0.127/<0.127
excellent/
excellent
aqueous
alkali
sodium hydroxide
10 / boiling —/0.020 —/excellent
20
Room
temperature
/ boiling
<0.127/<0.127
excellent/
excellent
50
Room
temperature
<0.0025/0.0508
excellent/
excellent
/ boiling
73 / boiling —/0.127 —/good
potassium hydroxide
10 / boiling —/<0.127 —/ excellent
25 / boiling —/0.305 —/good
50 30 / boiling 0.000/2.743 excellent/bad
ammonium hydroxide 28
Room
temperature
/—
0.0025/— excellent/—
sodium carbonate 20
Room
temperature
/ boiling
<0.127/<0.127
excellent/
excellent
baking ammoria 20
Room
temperature
/—
0.0708/— excellent /—
Inorganic
salt
solution
ferric chloride 40
Room
temperature
/95
0.000/0.002
excellent/
excellent
ferrous chloride 30
Room
temperature
/ boiling
0.000/<0.127
excellent/
excellent
Chlorinated and lead 10 <0.127/<0.127
cuprous chloride 50 <0.127/<0.127
ammonium chloride 10 <0.127/<0.000
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
ammonium sulfate
20℃
saturated
<0.127/<0.127
sodium sulfate 50 <0.127/<0.127
Zincum Snlfuricum
20℃
saturated
<0.127/<0.127
cuprous sulfate
10 <0.127/<0.127
30 <0.127/<0.127
silver nitrate 11
Room
temperature
/—
<0.127/— excellent /—
organic c
ompound
benzene（contain little
HCl、NaCl）
Steam and
liquid
80 0.005
excellent carbon tetrachloride As above
boiling
0.005
tetrachloroethylene
（stable）
100% Steam
and liquid
0.0005
tetrachloroethylene
（H2O）
0.0005
chloroform 0.003
chloroform
（H2O）
0.127 good
triclene
99% Steam
and liquid
0.00254
excellent
triclene
（stable）
99 0.00254
formaldehyde 37 0.127 good
formaldehyde
（containt2.5%H2SO4）
50 0.305 good