کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7176353 | 1466710 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical performance of composite joints of sapphire by ultrasonic-assisted brazing
ترجمه فارسی عنوان
ریز ساختار و عملکرد مکانیکی اتصالات کامپوزیتی از یاقوت کبود با استفاده از القایی مونتاژ
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کلمات کلیدی
سفال لحیم کاری با کمک التراسونیک، پوشش التراسونیک، مفصل کامپوزیتی، مقاومت برشی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
A method of lowering the coefficient of thermal expansion (CTE) of a bond metal of sapphire joints was examined for inhibiting the interfacial cracking of joints. An interlayer with the sandwich structure of Zn-Al/(SiCp/A356)/Zn-Al was fabricated and the surface of sapphire blocks was coated with a Zn-Al alloy by assistance of ultrasound. The assembly of sapphire and interlayer was brazed under the action of ultrasound. A metallurgical bond is performed between the sapphire and interlayer, and the composite material of SiCp/A356 is dissolved by Zn-Al alloys during brazing, resulting in a joint consisting of a new composite material of SiCp/Zn-Al-Si. It was composed of Zn-Al-Si alloy matrix and SiC particles with â¼40â¯vol.%, and has a CTE of â¼7.4â¯Ãâ¯10â6 /°C estimated by using Turner's model, approaching that of sapphire (â¼5â¯Ãâ¯10â6 /°C). The maximum shear strength of the composite joints reached â¼155â¯Â±â¯10â¯MPa, an increase of â¼250% in comparison with that joined using the Zn-Al alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 257, July 2018, Pages 1-6
Journal: Journal of Materials Processing Technology - Volume 257, July 2018, Pages 1-6
نویسندگان
Cui Wei, Li Shuqi, Yan Jiuchun, Zhang Xing,