کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
614908 1454837 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pressure-induced amorphization of zinc orthophosphate—Insight in the zinc coordination by XAS
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Pressure-induced amorphization of zinc orthophosphate—Insight in the zinc coordination by XAS
چکیده انگلیسی


• Use of in-situ high pressure EXAFS applied on α-Zn3(PO4)2.
• Evidence of an amorphization of the α-Zn3(PO4)2 induced by the pressure.
• Evidence of an irreversible zinc coordination change with the pressure.

In-situ high pressure X-ray absorption spectroscopy measurements at Zn K-edge were performed on α-Zn3(PO4)2 compound, one of the model materials of the tribochemical film obtained from the ZDDP molecule. The goal of these synchrotron experiments was to investigate pressure-induced effects on the local environment of zinc atoms during a compression/decompression cycle. Modifications of the absorption spectra at Zn K-edge of α-Zn3(PO4)2 show irreversible amorphization around zinc atoms and irreversible increase of the Zn–O distance. These results were identified as the signature of structural changes around the Zn atom in the pressed sample, thus suggesting an irreversible Zn coordination change with the pressure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 67, November 2013, Pages 222–228
نویسندگان
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