کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1635626 | 1516945 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and interface thermal stability of C/Mo double-coated SiC fiber reinforced γ-TiAl matrix composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
C/Mo duplex coating interfacially modified SiC fiber-reinforced γ-TiAl matrix composite (SiCf/C/Mo/γ-TiAl) was prepared by foil-fiber-foil method to investigate its interfacial modification effect. SiCf/C/TiAl composites were also prepared under the same processing condition for comparision. Both kinds of the composites were thermally exposed in vacuum at 800 and 900 °C for different durations in order to study thermal stability of the interfacial zone. With the aids of scanning electron microscope (SEM) and energy dispersive spectrometer (EDS), the interfacial microstructures of the composites were investigated. The results reveal that, although adding the Mo coating, the interfacial reaction product of the SiCf/C/Mo/TiAl composite is the same with that of the SiCf/C/TiAl composite, which is TiC/Ti2AlC between the coating and the matrix. However, C/Mo duplex coating is more efficient in hindering interfacial reaction than C single coating at 900 °C and below. In addition, a new layer of interfacial reaction product was found between Ti2AlC and the matrix after 900 °C, 200 h thermal exposure, which is rich in V and close to the chemical composition of B2 phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 5, May 2016, Pages 1317-1325
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 5, May 2016, Pages 1317-1325
نویسندگان
Xian LUO, Chao LI, Yan-qing YANG, Hai-man XU, Xiao-yu LI, Shuai LIU, Peng-tao LI,