표제지
국문요약
Abstract
목차
1. 서론 15
2. 이론적 배경 17
2.1. 자동차용 알루미늄 판재 17
2.1.1. 5000계열 알루미늄 20
2.1.2. 6000계열 알루미늄 22
2.2. 표면처리 24
2.3. 접합 25
2.3.1. 접착제를 활용한 접합 26
2.3.2. 단일 이음 접합을 이용한 알루미늄의 접합 연구 27
3. 실험방법 28
3.1. 소재 28
3.1.1. 5083M 28
3.1.2. 6016 30
3.1.3. 구조용 접착제 32
3.2. 표면처리 35
3.3. 시편제작 42
3.3.1. 제작과정 42
3.3.2. 접착길이 45
3.3.3. 경화 온도 49
3.4. 평가 52
3.4.1. 인장시험 52
3.4.2. 표면조도 측정 54
3.4.3. 접촉각 측정 56
4. 실험결과 60
4.1. 표면거칠기에 대한 전단강도 분석결과 60
4.2. 표면거칠기에 대한 표면에너지 분석결과 63
4.3. 표면거칠기가 전단강도와 표면에너지에 미치는 영향 68
5. 결론 74
6. 참고 문헌 76
Table. 1. The types of 5000 series Aluminum 21
Table. 2. The types of 6000 series Aluminum 23
Table. 3. 5083 and 5083M Aluminum alloy composition 29
Table. 4. Mechanical property of 5083 and 5083M Aluminum alloy 29
Table. 5. 6016 Aluminum alloy composition 31
Table. 6. Mechanical property of 6016 Aluminum alloy 31
Table. 7. Adhesive specification 34
Table. 8. Surface roughness of 5083M and 6016 after surface treatment 36
Table. 9. Parameters of Specimen 44
Table. 10. Contact angle and surface energy for 5083M and 6016 after surface treatment 59
Fig. 1. Casting process of D.C casting and Twin roll Casting 19
Fig. 2. Specimens by surface treatment of 5083M Aluminum: (a) NST, (b) #180, (c) #400, (d) #800 37
Fig. 3. Specimens by surface treatment of 6016 Aluminum : (a) NST, (b) #180, (c) #400, (d) #800 38
Fig. 4. 5083M (a) NST, (b) #180, (c) #400, (d) #800 roughness cross section 39
Fig. 5. 6016 (a) NST, (b) #180, (c) #400, (d) #800 roughness cross section 39
Fig. 6. 5083M (a) NST, (b) #180, (c) #400, (d) #800 2d roughness image, (e) NST, (f) #180, (g) #400, (h) #800 3d roughness image 40
Fig. 7. 6016 (a) NST, (b) #180, (c) #400, (d) #800 2d roughness image, (e) NST, (f) #180, (g) #400, (h) #800 3d roughness image 41
Fig. 8. Geometrical parameters of the specimen (dimensions in mm) 43
Fig. 9. A graph of specimen strain as lap length with 6016 Aluminum specimen 46
Fig. 10. Strain-Strength Curve as lap length 47
Fig. 11. A graph of max. load as lap length with 6016 Aluminum specimen 48
Fig. 12. A graph of shear strength as hardening Temperature 135℃, 165℃, 200℃ with 6016 Aluminum specimen 50
Fig. 13. Fractured surfaces of 6016 Aluminum specimen : Baked (a) 135℃, (b) 165℃, (c) 200℃ 51
Fig. 14. Tensile strength testing machine : Shimadzu AG-300kN Plus 53
Fig. 15. Surface roughness measurements : Olympus OLS 3100 55
Fig. 16. Contact angle measurements : KRUSS DSA10 58
Fig. 17. Shear strength of 5083M aluminum by surface treatment 61
Fig. 18. Shear strength of 6016 aluminum by surface treatment 62
Fig. 19. Contact angle and surface energy for 5083M alloys with different surface roughness 64
Fig. 20. Contact angle and surface energy for 6016 alloys with different surface roughness 65
Fig. 21. Contact angles of 5083M : Water(NST(a), #180(b), #400(c), #800(d)), Diidomethane(NST(e), #180(f), #400(g), #800(h)) 66
Fig. 22. Contact angles of 6016 : Water(NST(a), #180(b), #400(c) #800(d)), Diidomethane(NST(e), #180(f), #400(g) #800(h)) 67
Fig. 23. 5083M OM : Bonding of aluminum and adhesive 200x((a)NST, (b)#180, (c)#400, (d)#800), 500x((e)NST, (f)#180,... 70
Fig. 24. 6016 OM : Bonding of aluminum and adhesive 200x((a)NST, (b)#180, (c)#400, (d)#800), 500x((e)NST, (f)#180,... 71
Fig. 25. Fracture of 5083M Aluminum Specimen : (a) NST, (b) #180, (c) #400, (d) #800 72
Fig. 26. Fracture of 6016 Aluminum Specimen : (a) NST, (b) #180, (c) #400, (d) #800 73