1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS D ISO 7529 ( ) KS D ISO 7529:2012 2012 7 27 http:/www.kats.go.krKS D ISO 7529:2012 : ( ) ( ) () () ( ) : (http:/www.standard.go.kr) : :2002 12 9 :2012 7 27 2012-0337 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D ISO 7529:2012 i ii 1 1 2 1 3 2 4
2、 2 5 .3 6 .4 7 4 7.1 .4 7.2 5 7.3 5 7.4 5 8 .5 8.1 5 8.2 .5 9 : 6 10 .7 10.1 7 11 .7 A( ) 8 KS D ISO 7529:2012 ii 1989 1 ISO 7529, Nickel alloys Determination of chromium contentPotentiometric titration method with ammonium iron(II) sulfate , . KS D ISO 7529:2012 ( ) Nickel alloys Determination of c
3、hromium content Potentiometric titration method with ammonium iron(II) sulfate 1 0.2 % 1 25 % . A . (bias) . 0.2 % 0.068 % , (9. ). 2 . . ( ) . KS A ISO 5725 1, ( ) 1: KS A ISO 5725 2, ( ) 2: KS A ISO 5725 3, ( ) 3: KS A ISO 5725 4, ( ) 4: KS A ISO 5725 5, ( ) 5: KS A ISO 5725 6, ( ) 6: KS L ISO 385
4、 1, 1: KS L ISO 648, KS L ISO 1042, KS D ISO 7529:2012 2 3 / . (VI) . , (VII) . ( ) (VI) . 4 , . 4.1 , 20 1.18 g/mL 4.2 , 20 1.18 g/mL (1 3) (1 3). 4.3 , 20 1.41 g/mL 4.4 , 20 1.83 g/mL (1 1) (1 1). 4.5 , 15 g/L 4.6 (NH4)2S2O8 4.7 / . . . . ( 20 1.18 g/mL) 75 mL ( 20 1.41 g/mL) 25 mL . . 4.8 (potass
5、ium dichromate) , c(1/6 K2Cr2O7) 0.100 mol/L 105 1 99.95 % 4.903 g 500 mL . 1 L , . 4.9 0.1 mol/L () , c(NH4)2Fe(SO4)2 0.1 mol/L 4.9.1 400 mL ( ) (NH4)2Fe(SO4)2 6H2O) 40 g . (1 1) 100 mL . 1 L , KS D ISO 7529:2012 3 . 4.9.2 (4.8) 40 mL 200 mL 400 mL , (1 1) 10 mL, (4.5) 5 mL, (1 3) 5 mL . 7.2 ( ) .
6、Fe mol/L ( ) . 1.021VV V1: (mL)( 40.0 mL) V2: ( ) (mL) 5 5.1 5.1.1 . (4.3) . 5.1.2 / , ( ), (I) . . 5.1.3 400 mL , KS L ISO 385 1 A 50 mL 2 , 5.1.4 (impedance) pH . (interpolation) (10.1 ). 5.2 5.2.1 (burette) KS L ISO 385 1 A 0.1 mL 50 mL . 5.2.2 (pipette) KS D ISO 7529:2012 4 KS L ISO 648 A . 5.2.
7、3 (volumetric flask) KS L ISO 1042 A . 6 6.1 , . 6.2 , , (milling) (drilling) , . 6.3 (grease) (acetone) . 6.4 (riffling) . 7 7.1 7.1.1 1 2080 mg 400 mL 600 mL . 1 % g g 1 4 4 8 8 15 25 30 1.5 2.0 0.5 1.0 0.3 0.5 0.2 0.3 0.002 0.001 0.000 5 0.000 2 7.1.2 / (4.7) 20 mL . , (4.1) 1 mL . 30 mL 2 mL . 1
8、 g 10 % . 100 mL , 1015 % 50 mL , 1530 % 25 mL 7.1.3 . 7.1.3 (1 1)(4.4) 20 mL , . 100 mL . KS D ISO 7529:2012 5 7.1.4 200 mL , . (4.5) 5 mL (4.6) 5 g . (VI) 15 . , 10 . (10 g/L) . 7.1.5 (1 3)(4.2) 5 mL 5 . 5 5 mL 5 . . 7.1.6 7.2 () (4.9) . 7.2 (5.1) (stirrer) . (5.1.1) (5.1.2) (5.1.4) . () (4.9) . ,
9、 0.1 mL . . (10.1 ). 7.3 . 7.4 2 . 8 8.1 (%) . 10033017.0)(03mcVV V0: ( ) (4.9) (mL) V3: ( ) (4.9) (mL) c : ( ) (4.9) (mol/L) 0.017 33: ( ) (4.9) 1.00 mL (g) m : (g) 8.2 8.2.1 6 14 . 10 . 6 KS D ISO 7529:2012 6 2 , 2 . 2 ( %) Al Co Cr Cu Fe Mn Ni Si Ti 825 902 3 920 3 927 7 013 7 049 0.2 0.4 0.15 0.
10、1 1.5 1 0.07 0.05 2 1 17 0.01 21 5 19 20 20 15 1.6 0.04 0.1 0.05 0.2 0.15 30 48 3 44 0.2 7 0.7 0.4 0.3 0.4 0.05 0.8 0.4 0.35 0.6 0.8 0.7 0.3 1.1 2.5 2.3 0.6 2.4 2.3 8.2.2 8.2.2.1 KS A ISO 5725 . KS A ISO 5725 (Cochran & Dixon test) . 8.2.2.2 . . 95 % . 8.2.2.3 95 % KS A ISO 5725 . 3 . 3 ( %) 825 902
11、 3 920 3 927 7 013 7 049 21.37 5.17 19.19 20.31 19.52 15.04 0.042 0.051 0.046 0.057 0.071 0.048 0.00 0.00 0.032 0.055 0.00 0.022 0.12 0.14 0.13 0.16 0.20 0.14 0.12 0.14 0.16 0.22 0.20 0.20 8.2.2.4 825 , . 3920 7049 . KS A ISO 5725 . 9 : . 0.340 . 0.340 . 0.2 % 0.068 % , . . KS D ISO 7529:2012 7 10 1
12、0.1 10.1.1 . S . . . 10.1.2 . 3 . . 1 (dE/dV) . 2 “0” . , 2 . “0” . 10.1.3 . . 11 . a) b) c) d) e) KS D ISO 7529:2012 8 A ( ) A.1 . A.1 ( %)abAl B C CocCr Cu Fe Mn Mo Ni P S Si Ti A 0.30 28.034.02.5 2.0 63.0d 0.025 0.5 B 0.15 14.0 17.0 0.5 6.0 10.01.0 72.0d 0.015 0.5 C 0.4 1.0 0.08 14.0 17.0 0.5 5.0
13、 9.0 1.0 70.0d 0.015 0.5 2.2 2.8 Nb Ta:0.7 1.2D 0.2 0.8 0.006 0.08 17.0 21.0 0.3 0.4 2.83.350.055.00.015 0.015 0.4 0.6 1.2 Nb Ta:4.7 5.5E 0.15 0.60 0.10 19.0 23.0 0.7 1.5 30.035.0 0.015 1.0 0.15 0.60 F 0.08 0.15 5.0 18.0 21.0 0.5 5.0 1.0 d 0.020 1.0 0.2 0.6 Pb: 0.005G 1.0 2.0 0.020 0.13 15.0 21.0 18
14、.0 21.0 0.2 1.5 1.0 0.015 1.0 2.0 3.0 Zr: 0.15H 4.5 4.9 0.003 0.010 0.12 0.17 18.0 22.0 14.0 15.7 0.2 1.0 1.0 4.55.5 0.015 1.0 0.9 1.5 Zr: 0.15I 0.3 0.6 0.005 0.04 0.08 19.0 21.0 19.0 21.0 0.2 0.7 0.6 5.66.1 0.007 0.4 1.9 2.4 Ti Al:2.4 2.8J 0.02 1.0 1.0 2.0 1.0 26.030.0d0.040 0.035 0.1 K 1.2 1.6 0.0
15、03 0.010 0.02 0.10 12.0 15.0 18.0 21.0 0.1 2.0 1.0 3.55.0 0.015 0.015 0.1 2.8 3.3 Zr:0.02 0.08L 0.02 2.5 14.5 16.5 4.0 7.0 1.0 15.017.0 0.040 0.035 0.08 V: 0.35W: 3.0 4.5a . b ISO . c , 1.5 % . d . () 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS D ISO 7529:2012KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Nickel alloysDetermination of chromium content Potentiometric titration method with ammonium iron(II) sulfate ICS 77.120.40