Development of optimum process parameters and a study of the effects of surface roughness on brazing of copper

作者：Zaharinie Tuan; Huda Zainul^*; Izuana Mohd Faaliq; Hamdi Mohammed

来源：Applied Surface Science, 2015, 331: 127-131.

DOI：10.1016/j.apsusc.2015.01.078

• Brazing process design
• Brazing filler metal
• Wettability
• Surface roughness
• Material characterization
• Braze-joint strength

Brazing experiments on commercially-pure copper plates, using brazing filler metal (MBF-2005), are conducted at temperatures in the range of 650-750 degrees C for time-durations in the range of 5-15 min. Shear tests for braze-joints involved use of a universal testing machine. Based on the shear-test results, a new brazing cycle has been developed that corresponds to the greatest shear strength of the braze-joint. The brazing cycle has been performed under a controlled dry-argon atmosphere in a tube furnace. Microscopic observations were made by use of both optical and electron microscopes; whereas surface roughness measurements were made by using a TRIO Surface Roughness Tester. It is found that successful brazing and good wetting can be achieved by the least voids by using an average surface roughness (R-a, value) for the base material.

• 出版日期2015-3-15