표제지
Abstract
요약
목차
제1장 서론 13
제2장 이론적 배경 15
2.1. 화성처리의 목적 15
2.2. 화성처리의 특징 15
2.3. 화성처리의 Mechanism 16
제3장 실험 방법 18
3.1. 시편의 제작 및 전처리 18
3.2. 화성처리 공정 19
3.2.1. 화성처리 용액 조성 변화 19
3.2.2. 화성처리 용액 공정 변수 20
3.3. 화성처리피막 평가 및 분석 21
3.3.1. 육안 검사 21
3.3.2. 표면 분석 21
3.3.3. 염수 분무 시험 21
제4장 결과 및 고찰 22
4.1. 화성처리 피막 분석 결과 22
4.1.1. 화성처리 조성 별 표면 분석 22
4.1.2. 화성처리 조건 별 표면 분석 31
4.2. 화성처리 중성염수분무 시험 결과 38
4.2.1. 화성처리 함량 별 중성염수분무 시험 결과 38
4.2.2. 시험 조건에 따른 중성염수분무 시험 결과 43
제5장 결론 47
참고문헌 48
Table 1. Chemical composition of AA1050 Al 13
Table 2. Experimental condition with the change of chemical concentration... 19
Table 3. Experimental condition with the change of pH, temperature and... 20
Table 4. Surface composition(weight %) after K₂ZrF6 chemical conversion coating(이미지참조) 24
Table 5. Surface composition(weight %) after Cr₂(SO₄)₃ chemical conversion coating 26
Table 6. Surface composition(weight %) after KK₂SO₄ chemical conversion coating 28
Table 7. Surface composition(weight %) after Na₂SO₄ chemical conversion coating 30
Table 8. Surface composition(weight %) after chemical conversion coating by PH 33
Table 9. Surface composition(weight %) after chemical conversion coating by temperature 35
Table 10. Surface composition(weight %) after chemical conversion coating by treating time 37
Figure 1. Sample preparetion of chemical conversion coating process 18
Figure 2. SEM surface images under the conditions of temperatiure 20℃, pH 4.0,... 23
Figure 3. Surface composition(weight %) after K₂ZrF6 chemical conversion coating(이미지참조) 24
Figure 4. SEM surface images under the conditions of temperatiure 20℃, pH 4.0,... 25
Figure 5. Surface composition(weight %) after Cr₂(SO₄)₃ chemical conversion coating 26
Figure 6. SEM surface images under the conditions of temperatiure 20℃, pH 4.0,... 27
Figure 7. Surface composition(weight %) after K₂SO₄ chemical conversion coating 28
Figure 8. SEM surface images under the conditions of temperatiure 20℃, pH 4.0,... 29
Figure 9. Surface composition(weight %) after Na₂SO₄ chemical conversion coating 30
Figure 10. SEM surface images under the conditions of temperatiure 20℃,... 32
Figure 11. Surface composition(weight %) after chemical conversion coating by PH 33
Figure 12. SEM surface images under the conditions of pH 4.0, treating time... 34
Figure 13. Surface composition(weight %) after chemical conversion coating by temperature 35
Figure 14. SEM surface images under the conditions of temperature 20℃, pH... 36
Figure 15. Surface composition(weight %) after chemical conversion coating by treating time 37
Figure 16. Neutral salt spray test result under the conditions of temperature... 39
Figure 17. Neutral salt spray test result under the conditions of temperature... 40
Figure 18. Neutral salt spray test result under the conditions of temperature... 41
Figure 19. Neutral salt spray test result under the conditions of temperature... 42
Figure 20. SEM surface images under the... 44
Figure 21. SEM surface images under the conditions of pH 4.0, treating time... 45
Figure 22. SEM surface images under the conditions of temperature 20 ℃, pH... 46