کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
614748 1454826 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tribological performance comparing different refrigerant-lubricant systems: The case of environmentally friendly HFO-1234yf refrigerant
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Tribological performance comparing different refrigerant-lubricant systems: The case of environmentally friendly HFO-1234yf refrigerant
چکیده انگلیسی
We report on the tribological performance of gray cast iron with different lubricants, namely PAG (Polyalkylene glycol), POE (Polyolester), and Mineral oil, in the presence of environmentally friendly HFO-1234yf refrigerant. Two operating temperatures (24 °C and 110 °C) were used to investigate the mutual solubility of lubricant/refrigerant systems. PAG/HFO-1234yf exhibited better tribological performance compared to the other systems. The better performance was attributed to lower solubility of PAG in HFO-1234yf refrigerant, thus allowing the lubricant and refrigerant to preserve their unique properties. Using Scanning Electron Microscopy, plastic flow associated with adhesive wear was revealed for PAG/HFO-1234yf, where an anti-wear film over the surface was also identified. X-ray Photoelectron Spectroscopy identified a fluorine enriched protective layer in the case of PAG/HFO-1234yf at 110 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 78, October 2014, Pages 176-186
نویسندگان
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