کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10629385 | 991062 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Contact-mechanical properties at intermediate temperatures of ZrB2 ultra-high-temperature ceramics pressureless sintered with Mo, Ta, or Zr disilicides
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Contact-mechanical properties at intermediate temperatures of ZrB2 ultra-high-temperature ceramics pressureless sintered with Mo, Ta, or Zr disilicides Contact-mechanical properties at intermediate temperatures of ZrB2 ultra-high-temperature ceramics pressureless sintered with Mo, Ta, or Zr disilicides](/preview/png/10629385.png)
چکیده انگلیسی
The elasto-plastic properties and contact damage evolution of ZrB2 ultra-high-temperature ceramics (UHTCs) pressureless sintered at 1900 °C with MoSi2, TaSi2, or ZrSi2 additive were evaluated by Hertzian indentation tests in air up to 800 °C. It was found that liquid-phase sintering occurred in the three cases, but with severe decomposition of the TaSi2 and ZrSi2 additives and extensive formation of (Zr1âmSim)B2 solid-solutions in the case of the ZrSi2 additive. Furthermore, ZrB2 sintered with ZrSi2 underwent severe peptization at 800 °C, raising questions as to its utility as a UHTC. It was also found that ZrB2 sintered with MoSi2 exhibits the best combination of contact-mechanical properties, being harder, stiffer, and more resistant to quasiplastic damage and radial cracking than ZrB2 sintered with TaSi2 or ZrSi2, as well as equally resistant to ring/cone cracking from â¼600 °C onwards. Implications of interest for the UHTC community are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 35, Issue 11, October 2015, Pages 3179-3185
Journal: Journal of the European Ceramic Society - Volume 35, Issue 11, October 2015, Pages 3179-3185
نویسندگان
Jesús RodrÃguez-Sánchez, EstÃbaliz Sánchez-González, Fernando Guiberteau, Angel L. Ortiz,