Improving corrosion resistance of fastener systems for improved integrity, safety and reduced cost

提高紧固件系统的耐腐蚀性，以提高完整性、安全性并降低成本

基本信息

批准号：
543456-2019
负责人：
Asselin, Edouard
金额：
$ 1.82万
依托单位：
University of British Columbia
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2019
资助国家：
加拿大
起止时间：
2019-01-01 至 2020-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680780
关键词：
Improving corrosion resistance fastener systems

项目摘要

Fasteners such as nuts and bolts are integral in providing safe and reliable operation of structures across infrastructure, marine and oil & gas industries in Canada. Although they are relatively low-cost items, their failures may result in catastrophic consequences. Corrosion is recognized as the foremost contributor to fastener failure. Corrosion is a naturally occurring phenomenon with a staggering estimated direct cost of $46.4 billion in Canada (2003). Intermetallica based in Vancouver BC has developed a surface treatment for steels that enables a new class of corrosion resistant alloys. Materials made of intermetallic compounds have been the subject of significant research and development efforts over the past decades due to their special physical, chemical and/or mechanical properties. It has been observed that alloys can exhibit a high hardness, possess an increased mechanical strength, resist corrosion and oxidation and/or improve friction and wear behaviour. This project will aim to characterize intermetallic surface alloys, explore the application to ASTM A193-B7 fastener systems and evaluate the potential of this technology to improve corrosion resistance, extend service life and enhance the safety and integrity of Canadian infrastructure assets. A screening test protocol will be developed in order to rapidly determine performance relative to incumbent coating technologies employed for topside corrosion protection.

螺母和螺栓等紧固件在加拿大提供基础设施，海洋和石油和天然气行业的结构安全运行方面是不可或缺的。尽管它们是相对低成本的项目，但它们的失败可能会导致灾难性后果。腐蚀被认为是紧固件失败的最大贡献者。腐蚀是一种自然发生的现象，在加拿大（2003年）的惊人估计直接成本为464亿加元。总部位于卑诗省温哥华的金属层为钢开发了一种表面处理，可实现一种新的耐腐蚀合金。由于其特殊的物理，化学和/或机械性能，在过去几十年中，由金属间化合物制成的材料一直是大量研发工作的主题。已经观察到，合金可以表现出高硬度，具有增加的机械强度，抗腐蚀和氧化和/或改善摩擦和磨损行为。该项目将旨在表征金属间的表面合金，探索对ASTM A193-B7紧固件系统的应用，并评估该技术提高耐腐蚀性，延长使用寿命并提高加拿大基础设施资产的安全性和完整性的潜力。将制定筛选测试协议，以迅速确定相对于用于顶侧腐蚀保护的现有涂料技术的性能。