摘要
Oddy测试法是一种最为常用的评估材料是否适合博物馆文物储藏与展示的测试方法,其缺点在于采用活性低的块状金属试片,需要28天的测试周期,同时试片表面平整度以及人为主观因素会影响目测结果的准确性。本工作制备了银纳米薄膜试片替代Oddy测试法中块状金属试片,以半径10mm玻璃圆片为基质,银薄膜厚度约为200～220nm。实验结果表明,采用银纳米薄膜试片后,腐蚀现象在14d后可充分显现并分化,延长至28d时腐蚀现象基本无大变化,有效的缩短了测试周期。同时尝试结合数码图像采集技术,有利于进一步的腐蚀现象数据化分析研究工作,从而得到更加客观准确的测试结果。
Oddy test is the most widely used corrosion test which can assess the suitability of a storage or display material in museum.The disadvantage of Oddy test is the employment of low - active metal sheet coupon which cause the long term test period,and the distortion of metal coupons or man's subjectivity may lead an inaccurate result. A substitute silver nano - film coupon is discussed here to substitute the metal coupins.The thin film coupon uses 10 mm radius glass wafer as matrix and the thickness of the silver film is about 200 ~ 220 nm.The results show that the phenomena of corrosion are completely displayed and differentiates after 14 days and basically remains the same to 28 days,the original test period.Digital acquisition technology is also introduced to benefit the further research in digital analysis of corrosion phenomenon for the achievement of external and accurate results.
出处
《文物保护与考古科学》
2009年第S1期33-39,共7页
Sciences of Conservation and Archaeology
基金
国家科技支撑计划资助(No.2006BAK20B01)
国家大学生创新性实验计划资助(07206)
关键词
藏展材料评估筛选
银纳米薄膜试片
Oddy测试法
图像采集
Selection of materials for the storage or display of museum objects
Silver nano-film coupon
Oddy test
Digital acquisition
