کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10626303 | 989649 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of sphalerite to wurtzite crystallographic transformation on microstructure, optical and mechanical properties of zinc sulphide ceramics
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of sphalerite to wurtzite crystallographic transformation on microstructure, optical and mechanical properties of zinc sulphide ceramics Effect of sphalerite to wurtzite crystallographic transformation on microstructure, optical and mechanical properties of zinc sulphide ceramics](/preview/png/10626303.png)
چکیده انگلیسی
Zinc sulphide (ZnS) ceramics synthesized by chemical vapour deposition (CVD) were subjected to post CVD thermal treatments at 850 and 1050 °C in inert atmosphere under pressureless conditions. The samples were found to undergo cubic (sphalerite) to hexagonal (wurtzite) crystallographic transformation at around 1020 °C as confirmed by dilatometric and X-ray diffraction studies. The paper reports the effect of transformation in terms of structure - both crystallography and microstructure. Further, the effects of this transformation on the optical and mechanical properties are also analyzed. The increase in grain size was found to be beneficial for the IR transmission of sphalerite (cubic) phase while, the presence of wurtzite (hexagonal) was found to reduce the transmission significantly. A detailed evaluation of the nature and characteristics of the fracture revealed that the ZnS ceramics failed predominantly by low energy, quasi - cleavage fracture. It was also confirmed that the mechanical properties of this material vary with the extent (area fraction) of quasi - cleavage facets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 37, Issue 3, April 2011, Pages 1039-1046
Journal: Ceramics International - Volume 37, Issue 3, April 2011, Pages 1039-1046
نویسندگان
P. Ramavath, P. Biswas, R.S. Kumar, V. Mahendar, G.V.N. Rao, U.S. Hareesh, R. Johnson, N.E. Prasad,