Statistical Analysis of Alumina/Metal Brazed Joints under Applying of Ultrasonic Waves(Materials, Metallurgy & Weldability)
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Ultrasonic waves were applied during brazing of alumina to different metals using a Zn-5 mass% Al brazing filler alloy, where the intensity of the ultrasonic wave was 1kW and 18kHz. Ultrasonic waves were also applied during brazing of alumina to copper. First, alumina was metallized by applying ultrasonic waves in a Zn-Al braze bath. Then the metallized alumina was brazed with metal using the same filler alloy. The tensile strength data obtained were analysed using a statistical Weibull distribution. That distribution was based on weakest-link theory. The application of ultrasonic waves was intended to improve the wetting in the molten Zn-Al bath by accelerating the removing bubbles from the interface between alumina and the filler, and this would help to improve joint strength. The Weibull modulus obtained from this analysis was 5.1.
- 大阪大学の論文
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