CAJ | 학술논문

目的研究代替铬酸阳极氧化和稀铬酸氧化膜层封闭处理的工艺。方法在硼硫酸阳极氧化溶液中添加不同的稀土盐对铝合金进行阳极氧化，采用稀土盐对氧化膜层进行封闭处理，分析对比膜质量及膜层耐腐蚀性能。结果在硼硫酸阳极氧化溶液中加入稀土A盐能够提高氧化膜层的耐腐蚀性能，用稀土C盐溶液对该阳极氧化膜层进行封闭处理，可以进一步提高氧化膜层的耐腐蚀性能，耐中性盐雾腐蚀时间达到336 h。结论稀土A盐改进的硼硫酸阳极氧化/C盐封闭技术有望代替铬酸阳极氧化技术。
목적연구대체락산양겁양화화희락산양화막층봉폐처리적공예。방법재붕류산양겁양화용액중첨가불동적희토염대려합금진행양겁양화，채용희토염대양화막층진행봉폐처리，분석대비막질량급막층내부식성능。결과재붕류산양겁양화용액중가입희토A염능구제고양화막층적내부식성능，용희토C염용액대해양겁양화막층진행봉폐처리，가이진일보제고양화막층적내부식성능，내중성염무부식시간체도336 h。결론희토A염개진적붕류산양겁양화/C염봉폐기술유망대체락산양겁양화기술。
ABSTRACT:Objective To study the technology of anodic oxidation without chromate acid and sealing the oxidation film without dilute chromic acid. Methods The anodic oxidation film was prepared in the boron sulfuric acid anodic oxidation solution containing different rare earth salts, and then sealed in solutions containing rare earth salts. The film quality and corrosion resistance of the films were comparatively analyzed. Results Adding rare earth A salt into boron sulfuric acid anodic oxidation solution could improve the anti-corrosion property of the oxidation film, and sealing the as-prepared anodic oxidation film with rare earth C salt could fur-ther improve the anti-corrosion property of the oxidation film. This film could be intact after being placed for 336 h in NSS environ-ment. Conclusion The boron sulfuric acid anodic oxidation modified by rare earth A salt and sealed by rare earth C salt is expected to replace the chromic acid anodizing technology.