کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1565959 | 1514211 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of helium ion irradiation on amorphous hydrocarbon films
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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چکیده انگلیسی
Amorphous hydrocarbon films were irradiated with 60-140 keV He ions at the dose ranging from 1.0 Ã 1015 to 1.0 Ã 1017 ions/cm2. The films about 1.4 μm thick were deposited on Si substrates and irradiated at room temperature. The surface and mechanical properties of as-deposited and He ion irradiated hydrocarbon films were analyzed by using atomic force microscopy (AFM), AFM-based nanoindentation and scratching tests. Their chemical compositions and structural properties were evaluated by FTIR and Raman measurements. Analysis showed that the He ion irradiation led to a decrease in their surface roughness and an increase in the nanohardness and scratching resistance. FTIR measurements indicated that the content of bonded H atoms in hydrocarbon samples was greatly decreased due to the He ion irradiation, and a dense and covalent three-dimensional network was formed in films. The Raman data confirmed the microstructural evolution of samples into a dense metastable structure containing a large fraction of sp2 C clusters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 435, Issues 1â3, April 2013, Pages 214-221
Journal: Journal of Nuclear Materials - Volume 435, Issues 1â3, April 2013, Pages 214-221
نویسندگان
Hongyu Fan, Li Sun, Deming Yang, Jinhai Niu, Liping Guo, Qi Yang, Zhenhua Bi, Dongping Liu,