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22대 대한민국 국회 국회정보길라잡이 국회의원검색
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소장정보 검색

국회도서관 홈으로 정보검색 소장정보 검색
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결과 내 검색 동의어 포함

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목차

Ⅰ. 서 론 4

Ⅱ. 실험 재료 및 방법 5

1. 실험 재료 5

2. 시편제작 5

1) 분극실험(Potentiodynamic polarization test) 5

2) 침적실험(Immersion test) 6

3. 용접 6

1) 납착 6

2) 레이저융합 7

4. 실험 방법 7

1) 분극실험 7

2) 침적실험 8

3) 주사전자현미경 관찰 8

5. 통계 8

Ⅲ. 실험성적 8

1. 분극실험 8

2. 침적실험 11

3. 주사전자현미경 관찰 15

Ⅳ. 총괄 및 고안 17

Ⅴ. 결론 20

참고문헌 21

ABSTRACT 24

표목차

Table 1. Chemical composition(weight %), brand name, and manufacturer of used alloys 5

Table 2. Number of specimens 6

Table 3. Brand name and manufacturer of used materials 6

Table 4. Composition of used alloys and solder metals 7

Table 5. Comparison of corrosion parameters 9

Table 6. Effect of joining method on corrosion potential of test specimens compared by one-way ANOVA 9

Table 7. Effect of joining method on corrosion potential of test specimens compared by Duncan's multiple sequential range test 9

Table 8. Concentration of released elements for Pontor MPF 11

Table 9. Concentration of released elements for Jel-Bios 10 12

Table 10. Concentration of released elements for Wiron 99 12

Table 11. Concentration of released elements for Wirobond 12

Table 12. Total amount of released elements for Pontor MPF 13

Table 13. Total amount of released elements for Jel-Bios 10 13

Table 14. Total amount of released elements for Wiron 99 13

Table 15. Total amount of released elements for Wirobond 14

Table 16. Atomic(At) versus weight(Wt) percentage composition for used alloys* 19

그림목차

Fig. 1. A schematic drawing of potentiodynamic polarization test specimen 6

Fig. 2. A schematic drawing of immersion test specimen 6

Fig. 3. Working electrode 7

Fig. 4. Electropotential set 8

Fig. 5. Potentiodynamic polarization scan curverecorded in as cast specimens. E(mV, vs.SCE): Potential relative to reference electrode. logi(A/ ㎠): Log current density 10

Fig. 6. Potentiodynamic polarization scan curverecorded in solder specimens. E(mV, vs.SCE): Potential relative to reference electrode. logi(A/ ㎠): Log current density 10

Fig. 7. Potentiodynamic polarization scan curverecorded in laser weld specimens. E(mV, vs.SCE): Potential relative to eference electrode. logi(A/ ㎠): Log current density 10

Fig. 8. Potentiodynamic polarization scan curverecorded in Pontor MPF. E(mV, vs.SCE): Potential relative to eference electrode logi(A/ ㎠): Log current density 10

Fig. 9. Potentiodynamic polarization scan curverecorded in Jel-Bios 10. E(mV, vs.SCE): Potential relative to reference electrode. logi(A/ ㎠): Log current density 10

Fig. 10. Potentiodynamic polarization scan curverecorded in Wiron 99. E(mV): Potential relative to reference electrode. logi(A/ ㎠): Log current density 10

Fig. 11. Potentiodynamic polarization scan curverecorded in Wirobond. E(mV): Potential relative to reference electrode. logi(A/ ㎠): Log current density 11

Fig. 12. Ion release as a function of time in as㎍/㎠) 14

Fig. 13. Ion release as a function of time in㎍/㎠) 14

Fig. 14. Ion release as a function of time of㎍/㎠) 14

Fig. 15. Comparison of total amount of released ion㎍/㎠?14days) 14

Fig. 16. Pontor MPF _ As cast; After 14days 15

Fig. 17. Pontor MPF _ Solder; After 14days 15

Fig. 18. Pontor MPF _ Laser weld; After 14days 15

Fig. 19. Jel-Bios 10 _ As cast; After 14days 15

Fig. 20. Jel-Bios10 _ Solder; After 14days 15

Fig. 21. Jel-Bios 10 _ Laser weld; After 14days 15

Fig. 22. Wiron 99 _ As cast; After 14days 16

Fig. 23. Wiron 99 _ Solder; Before corrosion 16

Fig. 24. Wiron 99 _ Solder; After 14days 16

Fig. 25. Wiron 99 _ Solder; After 7days 16

Fig. 26. Wiron 99 _ Solder; After 14days 16

Fig. 27. Wiron 99 _ Solder; After 7days 16

Fig. 28. Wiron 99 _ Solder; After 14days 16

Fig. 29. Wiron 99 _ Laser weld; After 14days 16

Fig. 30. Wirobond _ As cast; After 7days 17

Fig. 31. Wirobond _ Solder; After 14days 17

Fig. 32. Wirobond _ Laser weld; After 14days 17

Fig. 33. Average amount of released elements with time in pilot study(㎍/㎠?day) 19

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