کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7111484 | 1460787 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Wear behaviour of hydrogen free diamond-like carbon thin films in diesel fuel at different temperatures
ترجمه فارسی عنوان
رفتار ورقه های نازک کربن الماس مانند هیدروژن را در سوخت های دیزلی در دماهای مختلف بپوشانید
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کلمات کلیدی
کربن الماس مانند، سوخت دیزلی، اکسیداسیون، تردید طیف سنجی رامان،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
چکیده انگلیسی
In the present study, super hard, hydrogen free amorphous diamond-like carbons with a high fraction of sp3 hybridised carbon were deposited by pulsed laser deposition. The tribological performance of DLC coatings was investigated by translatory oscillating relative motion of a 100Cr6 steel ball in diesel fuel or ambient air at 25 °C or 150 °C temperature. The structure of the coatings and the tribological worn surfaces were characterised by Raman spectroscopy and by scanning electron microscopy. Bio-fuel with a high fraction of unsaturated fatty acids has the potential to reduce friction in tribological systems with chemically inert DLC. Diesel blend with 10% bio-fuel reduces friction at 150 °C. If there is no diesel fuel, pre-oxidation at 450 °C for 8 h leads to the best wear resistance (â f & wear rate) at room temperature. Without diesel fuel, enhancement of temperature up to 150 °C during wear testing causes an increase of the coefficient of friction. Again the 450 °C pre-oxidised sample revealed the lowest friction. For this coating, Raman spectroscopy points to a small increase of the sp2 CC bonds. Diesel fuel seems to promote coherent coating failure under 150 °C wear, while pre-oxidation at 450 °C support adhesive coating ablation under higher loads or cyclic loading.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Diamond and Related Materials - Volume 44, April 2014, Pages 78-87
Journal: Diamond and Related Materials - Volume 44, April 2014, Pages 78-87
نویسندگان
Annett Dorner-Reisel, Roman Lieberwirth, Stefan Svoboda, Katja Günther, Christian Röder, Cameliu Himcinschi, Gert Irmer, Steffen WeiÃmantel,