I-Corps: Atomic Layer Deposited Films for Protection of Precious Silver Objects

I-Corps：用于保护贵重银制品的原子层沉积薄膜

• 批准号: 1509534
• 负责人: Raymond Phaneuf
• 金额: $ 5万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-12-15 至 2017-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1509534&HistoricalAwards=false
• 关键词: Corps; Atomic; Layer; Deposited; Films

Customers in cultural heritage institutions, both large and small facilities, such as the Metropolitan Museum of Art, hold thousands of silver objects under their care. The current method for corrosion protection includes the manual application of polymeric nitrocellulose, which protects objects for 10-20 years and can take 3 to 40 more hours per object depending on its size and complexity. The relatively short film lifetime and long application process leaves museums with thousands of silver objects in a constant cycle of replacing plastic coatings or leaving many objects unprotected. The proposed atomic layer deposited (ALD) coating developed by this I-Corps team is expected to fulfill the rigorous requirements required by cultural heritage institutions such as museums, archives and libraries, and fine silver jewelry manufacturers such as artisans or jewelry retailers.ALD films will allow for the long term protection of cultural heritage objects, as they protect silver significantly longer than the current coating technology, applying nitrocellulose films. By reducing the amount of tarnishing and frequency of polishing, objects can be preserved longer without loss of original surface details. This I-Corps grant will allow ALD coating technology to be transferred to the cultural heritage and museum conservation community. As part of this technology transfer, the team will also develop a better understanding of how ALD metal oxide films affect the chemical structure and visual characteristics of the substrate. While ALD films applied to clean, flat, 2D surfaces is well understood, little work has been completed on the effect of using ALD films on rough, 3D objects with prior surface treatments. The knowledge and experience gained through the I-CORPS program will be shared with other potential entrepreneurs and students through a proposed seminar with the University of Maryland's Clark School of Engineering, Entrepreneurship and Innovation Program, and Hinman CEOs program. This seminar would further disseminate the knowledge gained through I-CORPS to other entrepreneurially-minded students at the University of Maryland.

大都会艺术博物馆等大大小小的文化遗产机构的客户保管着数千件银器。 目前的腐蚀防护方法包括手动涂抹聚合硝化纤维，这种方法可以保护物体 10-20 年，并且根据物体的大小和复杂程度，每个物体可能需要 3 到 40 个小时以上。相对较短的薄膜寿命和较长的应用过程使得博物馆有数千件银器处于更换塑料涂层的不断循环中，或者使许多物品不受保护。该 I-Corps 团队开发的拟议原子层沉积 (ALD) 涂层预计将满足博物馆、档案馆和图书馆等文化遗产机构以及工匠或珠宝零售商等纯银珠宝制造商所要求的严格要求。ALD 薄膜将能够长期保护文化遗产物品，因为它们对银的保护时间比当前的涂层技术长得多， 硝化纤维薄膜。通过减少失去光泽的量和抛光的频率，可以更长时间地保存物体，而不会损失原始的表面细节。 I-Corps 的这笔赠款将使 ALD 涂层技术能够转移到文化遗产和博物馆保护界。作为这项技术转让的一部分，该团队还将更好地了解 ALD 金属氧化物薄膜如何影响基材的化学结构和视觉特性。虽然 ALD 薄膜应用于干净、平坦的 2D 表面已广为人知，但关于在经过预先表面处理的粗糙 3D 物体上使用 ALD 薄膜的效果，目前还没有完成多少工作。通过 I-CORPS 计划获得的知识和经验将通过与马里兰大学克拉克工程学院、创业与创新计划以及 Hinman CEO 计划举办的研讨会与其他潜在企业家和学生分享。该研讨会将进一步向马里兰大学其他有创业精神的学生传播通过 I-CORPS 获得的知识。