کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044569 | 1518921 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and field electron emission properties of multi-walled carbon nanotube films directly grown on catalytic stainless steel substrate
ترجمه فارسی عنوان
خصوصیات انتشار سیگنال و میدان الکترونی فیلمهای نانولوله کربنی چندسانی که به طور مستقیم بر روی بستر فولاد ضد زنگ کاتالیزور رشد می کنند
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
The multi-walled CNT films were directly grown on stainless steel substrates using an oxidation-reduction treatment with chemical vapor deposition. Microstructure and field emission properties of the as-received CNT films were detailedly investigated. The results indicate that the CNTs have originally random orientation with relative high density, good crystalline perfection and large diameter. Besides, the CNT films exhibit superior field electron emission performances with low threshold electric field (â¼4.2â¯V/μm) and very high emission current density (â¼24â¯mA/cm2). Importantly, the CNTs directly grown on stainless steel substrates have remarkable long-term stability with â¼3.4% fluctuation over 50â¯h continuous measurement under high current density, â¼10â¯mA/cm2. The perfect graphitization, large field enhancement factor, low contact resistance, good adhesion and high thermal conductivity are believed to be principally responsible for their superior field emission properties, which make them very promising application as an electron source in microthrust space electric propulsion neutralizer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 149, March 2018, Pages 195-199
Journal: Vacuum - Volume 149, March 2018, Pages 195-199
نویسندگان
Yongjun Wang, Detian Li, Wenjun Sun, Jian Sun, Gang Li, Huzhong Zhang, Zhenhua Xi, Xiaoqiang Pei, Yanwu Li, Yongjun Cheng,