رسوب فیلم نازک کربن شبه الماس و کاربین به‌روش پلاسمای الکترولیتی کاتدی

نویسندگان

دانشگاه صنعتی امیرکبیر، دانشکده مهندسی معدن و مواد، تهران

چکیده

- با استفاده از روش پلاسمای الکترولیتی، کاتدی فیلم نازکی از کربن شبه الماس و کاربین بر سطح نیکل ایجاد شد. محلول اتانولی با غلظت 15، 30 و 50 درصد حجمی اتانول به‌عنوان الکترولیت مورد استفاده قرار گرفت و فیلم کربنی حاصله با استفاده از آزمون طیف‌سنجی انتشار نوری تخلیه جرقه، میکروسکوپ الکترونی روبشی، پروفیلومتر نوری و روش بهبود سطحی پراکندگی رامان مورد بررسی قرار گرفت. نتایج، تشکیل پوششی از جنس کربن با ضخامت 60-40 نانومتر را بر سطح نیکل تأیید می‌کند. با افزایش غلظت اتانول، نسبت شدت باند مربوط به کاربین در طیف رامان نسبت به باند مربوط به ساختار آمورف کربنی از 04/1 به 32/0 کاهش یافت که نشان‌دهنده کاهش میزان کاربین و افزایش در مقدار کربن شبه الماس در فیلم ایجاد شده است. همچنین، بررسی سطحی نمونه‌ها، افزایش در زبری سطح را از 520 تا 750 نانومتر با افزایش در غلظت اتانول نشان داد.

کلیدواژه‌ها


عنوان مقاله [English]

Deposition of Diamond-like Carbon and Carbyne Thin Film by Cathodic Plasma Electrolysis Process

نویسندگان [English]

  • S.M. Mousavi Khoie
  • A. Habibi
  • F. Mahboubi
Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran.
چکیده [English]

By using cathodic plasma electrolysis, a thin film of diamond-like carbon and carbyne was produced on the  nickel surface. The ethanolic solution at different concentrations of 15, 30 and 50 vol% was used as the  electrolyte; the  produced carbon film was studied by using glow discharge optical emission spectroscopy, scanning electron microscopy, optical profilometer,  and surface enhanced Raman scattering. The results proved the  coating formation of 40-60 nm thick carbon materials on the  nickel surface. The intensity ratio of carbyne band to the amorphous carbon structure band in the  Raman spectroscopy was decreased from 1.o4 to 0.32 by an increase in ethanol concentration; this was related to the  reduction at the carbyne and the  increase of the diamond-like carbon content in the produced film. Also, the study of the  samples surface showed an increase in the  surface roughness from 520 to 750 nm by enhancing the ethanol concentration.

کلیدواژه‌ها [English]

  • Cathodic plasma electrolysis
  • Diamond-like carbon
  • Carbyne
  • Raman spectroscopy
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