کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437625 1398176 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Interfacial microstructure and mechanical properties of porous-Si3N4 ceramic and TiAl alloy joints vacuum brazed with AgCu filler
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Interfacial microstructure and mechanical properties of porous-Si3N4 ceramic and TiAl alloy joints vacuum brazed with AgCu filler
چکیده انگلیسی
Porous Si3N4 ceramic was firstly joined to TiAl alloy using an AgCu filler alloy. The effects of brazing temperature and holding time on the interfacial microstructure and mechanical properties of porous-Si3N4/AgCu/TiAl joints were studied. The typical interfacial microstructure of joints brazed at 880 °C for 15 min was TiAl/AlCu2Ti/Ag-Cu eutectic/penetration layer (Ti5Si3+TiN, Si3N4, Ag (s, s), Cu (s, s))/porous-Si3N4. The penetration layer was formed firstly in the brazing process. With increasing brazing temperature and time, the thickness of the penetration layer increased. A large amount of element Ti was consumed in the penetration layer which suppressed the formation and growth of other intermetallic compounds. The penetration layer led the fracture to propagate in the porous Si3N4 ceramic substrate. The maximum shear strength was ~13.56 MPa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 13, September 2017, Pages 9738-9745
نویسندگان
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