Resistance monitoring of novel solders during processing and operation at high temperatures

高温加工和操作期间新型焊料的电阻监测

• 批准号: 486412-2015
• 负责人: Mayer, Michael
• 金额: $ 1.81万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=585584
• 关键词: Resistance; monitoring; novel; solders; during

Solders are ubiquitous in electronic products and methods to improve the performance and lower the cost of lead-free solders are needed in many industries (electronics, automotive, medical, aerospace, etc.). Alloying elements to existing lead-free solders is a way to alter solder performance. Many elements can be added to existing solder alloys and the number of possible alloying combinations is so large that finding the best combination is impossible with conventional means. The development of an in situ measurement method for solder resistance is proposed to accelerate the assessment of novel solder alloys leading to a larger number of alloying combinations to be tested for a given time. This will increase the chances of finding new solders with improved performance. The proposed project will develop an automated characterization setup for the new method to increase the number of solder samples that can be assessed. In contrast to conventional methods of reliability analysis which involve the cross-sectioning of samples, the new method will be employed during reflow and during reliability testing, leading to improved data and a better understanding of the failure mechanisms of joints made with novel solder alloys, and ultimately helping the quest for improved solder joints of the future.

焊料在电子产品中普遍存在，许多行业(电子、汽车、医疗、航空航天等)都需要无铅焊料来提高性能和降低成本。在现有的无铅焊料中加入合金元素是改变焊料性能的一种方法。许多元素可以添加到现有的焊料合金中，而且可能的合金化组合的数量如此之多，以至于用传统方法无法找到最佳的组合。 为了加速对新型焊料合金的评估，提出了一种在线测量焊料电阻的方法，从而导致在给定的时间内需要测试大量的合金组合。这将增加找到性能更好的新焊料的机会。拟议的项目将为新方法开发一个自动表征设置，以增加可以评估的焊料样本的数量。与涉及样品横截面的传统可靠性分析方法不同，新方法将在回流焊和可靠性测试期间使用，从而改进数据并更好地理解由新型焊料合金制成的焊点的失效机理，最终有助于探索未来改进的焊点。