Thermal analysis of aluminum alloy furnace brazing

该研究项目的总体目标是提高用于组装汽车应用热交换器产品的材料和制造工艺的理解，性能和成本。这些系统是通过使用连续带式炉工艺对轻金属（包括铝）进行炉内钎焊而制造的。Dana Canada Corporation（Dana）在其制造工艺中拥有并使用专有的无焊剂钎焊技术，该技术基于镍基钎焊促进剂的表面应用，使用电解沉积方法应用。本提案描述了Stephen Corbin教授于2011年为Dana完成的先前研究项目的第二阶段扩展的目标和活动。 第二阶段的主要目标包括：1）应用并进一步改进第一阶段项目中开发的钎焊测量方法，以提高对德纳感兴趣的材料系统的扩散、熔化和润湿特性的基本理解;作为钎焊工艺的函数，材料和电镀存款变量2）为了提高对达纳正在开发的改进材料和电镀技术替代品的局限性和相对功效的认识，从而可以以潜在的较低成本开发出更高性能和更坚固的钎焊材料和制造工艺。 研究将使用研究项目第一阶段建立的技术进行，包括：热技术，如差示扫描量热法（DSC）和激光闪光热扩散率（LFTD），微观结构和其他材料表征技术，如光学和SEM显微镜，EDS分析，XRD和XPS。

The overall objectives of this research project are to gain improvements in the understanding, performance and costs of materials and manufacturing processes used to assemble heat exchanger products for automotive applications. These systems are manufactured through furnace brazing of light metals (including Al) using continuous belt furnace processes. Dana Canada Corporation (Dana) owns and uses proprietary flux less brazing technology in its manufacturing processes, that is based on the surface application of a nickel based braze promoter, applied using electrolytic deposition methods. This proposal describes the objectives and activities for a Phase II extension of previous a research project that was completed for Dana by Prof. Stephen Corbin in 2011. The primary objectives of Phase II include: 1) to apply and further improve the brazing measurement methodologies developed in the Phase 1 project, to achieve an improved fundamental understanding of the diffusion, melting and wetting characteristics of the material systems of interest to Dana; as functions of brazing process, material and plating deposit variables 2) to advance knowledge about the limitations and relative efficacy of improved materials and plating technology alternatives under development by Dana, so that higher performance and more robust brazing material and manufacturing processes can be developed at potentially lower cost. The research will be carried out using techniques established during Phase I of the research project and will include: thermal techniques such as Differential Scanning Calorimetry (DSC) and Laser Flash Thermal Diffusivity (LFTD), microstructural and other materials characterization techniques such as optical and SEM microscopy, EDS analysis, XRD, and XPS.