کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5457956 1515951 2017 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
W-ZrC composites prepared by reactive melt infiltration of Zr2Cu alloy into partially carburized W preforms
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
W-ZrC composites prepared by reactive melt infiltration of Zr2Cu alloy into partially carburized W preforms
چکیده انگلیسی
W-ZrC composites without residual WC have been prepared for the first time by reactive infiltration at 1300 °C for 1 h in vacuum using a molten Zr2Cu alloy and a newly designed partially-carburized W powder as raw materials. The as-synthesized composites consist of two major phases of W and ZrC, in which the content of W is 65 vol%. The reaction time needed to produce a fully densified W-ZrC bulk ceramic is distinctly shortened by this means, as contrasted with conventional WC/W or WC preforms. The microstructural evolution during reactive melt infiltration is investigated to obtain a better understanding of reaction mechanisms and mechanical properties of the W-ZrC composites derived by infiltrating Zr2Cu alloy into partially carburized W preforms. The flexural strength, Young's modulus and fracture toughness for the W-ZrC composite are 554 MPa, 339 GPa and 9.7 MPa·m1/2, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 67, September 2017, Pages 125-128
نویسندگان
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