Pembuatan Magnet Permanen NdFeB FeMn Dengan Metode Mechanical Alloying Appendix

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LAMPIRAN 1

FOTO PERALATAN DAN BAHAN PENELITIAN 1. PeralatanPenelitian

(Hydraulic Press) High Energy Miling(HEM)

Jar Mill (untuk HEM) _{Beaker Glass}_{50 ml} Ball Mill

(2)

Hand Mortar Ayakan 200 mesh Dryer

Vickers Hardness AMH43 _Cetakan_(Molding)

(3)

Peralatan Archimedes

Under Vacuum Dryer

(4)

(5)

2. Bahan

Toulena

Axceton

NdFeB

Type MQ-A 37-16 FeMn

(6)

LAMPIRAN 2

PERHITUNGAN TRUE DENSITY

1. Perhitungan true density NdFeB/FeMn dengan waktu milling 15 menit

(18,537

−

9,813)

−

(19,395

−

10,813)

x0,8669

ρ

=

1 8,724

−

8,582

x0,8669

ρ

=

0,8669

(18,537

−

9,813)

−

(19,399

−

10,813)

x0,8669

ρ

=

1

(7)

ρ

=

0,8669

(18,537

−

9,813)

−

(19,401

−

10,813)

x0,8669

ρ

=

1 8,724

−

8,588

x0,8669

ρ

=

0,8669

(18,537

−

9,813)

−

(19,405

−

10,812)

x0,8669

ρ

=

0,999

(8)

ρ

=

0,8660331

(18,537

−

9,813)

−

(19,410

−

10,813)

x0,8669

ρ

=

1 8,724

−

8,597

x0,8669

ρ

=

0,8669

0,127

ρ = 6,8259 ��/��3

2. Perhitungan true density NdFeB/FeMn dengan waktu milling 30 menit

(9)

ρ

=

1 8,724

−

8,589

x0,8669

ρ

=

0,8669

(18,537

−

9,813)

−

(19,405

−

10,813)

x0,8669

ρ

=

1 8,724

−

8,592

x0,8669

ρ

=

0,8669

(10)

ρ

=

1 8,724

−

8,594

x0,8669

ρ

=

0,8669

(18,537

−

9,813)

−

(19,410

−

10,813)

x0,8669

ρ

=

1 8,724

−

8,597

x0,8669

ρ

=

0,8669

(11)

ρ

=

0,999

8,724

−

8,601

x0,8669

ρ

=

0,8660331

0,123

_ρ = 7,0409 ��/��3

3. Perhitungan true density NdFeB dan FeMn a. True density NdFeB

ρ

=

�

3 − �

1 (

�

2 − �

1)

−

(

�

4 − �

3)

x

��

ρ

=

10,813

−

9,813

(18,537

−

9,813)

−

(19,420

−

10,813)

x0,8669

ρ

=

1 8,724

−

8,607

x0,8669

ρ

=

0,8669

0,117

ρ = 7,4094 ��/��3

b. True density FeMn

ρ

=

�

3 − �

1

(12)

ρ

=

10,812

−

9,813

(18,537

−

9,813)

−

(19,423

−

10,812)

x0,8669

ρ

=

0,999

8,724

−

8,661

x0,8669

ρ

=

0,8660331

0,113

_ρ = 7,6640 ��/��3

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HASIL

PARTICLE SIZE ANALYZER

(PSA)

LAMPIRAN 3

PERHITUNGAN BULK DENSITY

1. Perhitungan bulk density NdFeB/FeMn dengan waktu milling 15 menit

a. Magnet Bonded/Pelet NdFeB + FeMn (0,5 wt %)

ρ

s =

��

�� − ��

x

��

ρ

s =

4,136

−

3,402

x0,9967

(14)

ρ

s

= 5,616��/��3

b. Magnet Bonded/Pelet NdFeB + FeMn (1 wt %)

ρ

s =

��

�� − ��

x

��

ρ

s =

4,102

−

3,382

x0,9967

ρ

s =

4,0884

0,72

ρ

s

= 5,678��/��3

c. Magnet Bonded/Pelet NdFeB + FeMn (3 wt %)

ρ

s =

��

�� − ��

x

��

ρ

s =

4,242

−

3,512

x0,9967

ρ

s =

4,2280

0,73

ρ

s

= 5,7917��/��3

d. Magnet Bonded/Pelet NdFeB + FeMn (5 wt %)

ρ

s =

��

�� − ��

x

��

ρ

s =

4,150

−

3,424

x0,9967

ρ

s =

4,1363

0,726

(15)

e. Magnet Bonded/Pelet NdFeB + FeMn (10 wt %)

ρ

s =

��

�� − ��

x

��

ρ

s =

4,176

−

3,441

x0,9967

ρ

s =

4,1622

0,735

ρ

s

= 5,662��/��3

2. Perhitungan bulk density NdFeB/FeMn dengan waktu milling 30 menit

ρ

s =

��

�� − ��

x

��

ρ

s =

4,183

−

3,440

x0,9967

ρ

s =

4,1691

0,743

ρ

s

= 5,611��/��3

ρ

s =

��

�� − ��

x

��

ρ

s =

4,167

−

3,422

x0,9967

ρ

s =

4,1532

0,745

(16)

ρ

s =

��

�� − ��

x

��

ρ

s =

4,164

−

3,422

x0,9967

ρ

s =

4,1502

0,742

ρ

s

= 5,585��/��3

ρ

s =

��

�� − ��

x

��

ρ

s =

4,200

−

3,447

x0,9967

ρ

s =

4,1861

0,753

ρ

s

= 5,559��/��3

ρ

s =

��

�� − ��

x

��

ρ

s =

4,264

−

3,497

x0,9967

ρ

s =

4,2499

0,767

(17)

a. Bulk density NdFeB milling15 menit

ρ

s =

��

�� − ��

x

��

ρ

s =

4,253

−

3,323

x0,9967

ρ

s =

4,2389

0,93

ρ

s

= 4,558 ��/��3 b. Bulk density NdFeB milling30 menit

ρ

s =

��

�� − ��

x

��

ρ

s =

4,214

−

3,494

x0,9967

ρ

s =

4,2000

0,72

(18)

LAMPIRAN 4

PERHITUNGAN FLUKS MAGNETIK

1. Perhitungan gaussmeter NdFeB/FeMn dengan waktu milling 15 menit

• Center = kutub positif +kutub negatif

2

• Pinggir= kutub positif +kutub negatif

2

=128,4+138,7

(19)

=267,1

2

=133,55 gauss

2

2. Perhitungan gaussmeter NdFeB/FeMn dengan waktu milling 30 menit

(20)

2

• Center = kutub positif +kutub neg atif

2

(21)

2

3. Perhitungan gaussmeter bonded NdFeB tanpa aditif FeMn a. Gaussmeter bonded NdFeB milling 15 menit

2

=243,2+305,7

2

=548,9

(22)

=274,45 gauss

b. Gaussmeter bonded NdFeB milling 30 menit

2

=153,8+186,1

2

=339,9

2

=169,95 gauss

2

=294,3+311,5

2

=605,8

2

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LAMPIRAN 6

HASILSEM/EDX POINTSERBUK

(Scanning Electron Microscope/ Energy Dispersive X-Ray) a. NdFeB 99 % + FeMn 1 %

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LAMPIRAN 7 XRD

PERHITUNGAN UKURAN KRISTAL MENGGUNAKAN DEBYE SCHARER

0,0026877922= 51,56nm

 K= 0,9 λ = 1,540598Å = 0,154 nm θ = ½ x 39,07° = 19,535°

0,0025916825= 53,47nm

• NdFeB + 5 % FeMn – 15 menit

0,0026599863= 52,10nm

 K= 0,9 _{λ = 1},540598Å = 0,154 nm _{θ = ½ x}42,76° = 21,38°

0,0025607536= 54,12nm

• NdFeB + 10 % FeMn – 15 menit

0,0026080423= 53,143nm

(33)

t = 0,1576°  t = 0,1576 x 2 x 3,142

0,002550833= 54,335nm

• FeMn murni

0,0026765574= 51,78nm

 K= 0,9 λ = 1,540598Å = 0,154 nm θ = ½ x 44,378° = 22,189°