کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1500187 993338 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Layered atomic structures of double oxides for low shear strength at high temperatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Layered atomic structures of double oxides for low shear strength at high temperatures
چکیده انگلیسی

Double oxide phases combining a transition metal and a noble metal have recently become a subject of investigation as solid lubricant materials for high-temperature tribological applications. Here, we study the changes in chemistry and crystal structure of silver molybdate (Ag2Mo2O7) and silver tungstate (Ag2WO4) thin films and powders from 25 to 600 °C. We show, using ab initio molecular dynamics, high-temperature X-ray diffraction, high-temperature Raman spectroscopy and differential scanning calorimetry in combination with sliding tests, that the layered atomic structure of silver molybdate facilitates sliding, resulting in a low coefficient of friction (<0.2) from 300 to 500 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Scripta Materialia - Volume 62, Issue 10, May 2010, Pages 735–738
نویسندگان
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