تم قياس و تحديد سلوك التآكل و الاحتكاك لطبقة تبطين مركّبة من مادتي الكربون و الفلور بنسب تركيب معيّنة لكلٍ منها.
تم رش طبقة التبطين هذه حرارياً على قرص مصنوع من حديد الصب ( فونت ).
تم إجراء الانزلاق بين مسامير أسطوانية مصنوعة من مواد تبطين مكابح عضوية و الأقراص المطلية ( المغلّفة ) و غير المطلية.
تم تحديد خواص مواد التبطين بعد قياس قيم القساوة و المسامية و مقاومة التآكل فيها.
تم اختبار خواص مقاومة التآكل في طبقة التبطين اعتماداً على عملية تعريضها لمادة Nacl بنسبة صغيرة لمدة تزيد عن مائة و خمسين ساعة.
تميزّت طبقة التبطين بأفضل مقاومة تآكل، تم إجراء اختبارات قياس قيم التآكل و الاحتكاك عند قيم ضغط تماس متفاوتة مابين (1.5MPa ÷ 7MPa) و بسرعة انزلاق 1m/sec و3m/sec.
This study deals with the friction and wear behavior of coating layers (fluoride and Graphite).The coatings are thermally sprayed on cast iron disks. Sliding is performed between cylindrical pins manufactured from organic brake linings and the coated and uncoated disks. The coatings are characterized by measuring their hardness, porosity, and corrosion resistance. The corrosion resistance of the coating is tested by exposure to Nacl for 150 hours; the coating layer has had the best corrosion resistance. The friction and wear tests are conducted under contact pressures of (1.5 MPa to 7 MPa) and sliding speeds of 1 and 3 m/sec.
References used
M.G. Jacko , Physical and chemical Changes of organic disc Pads service , wear 1978, 163-175
R.C. Tucker , ASM Handbook : Surface Engineering vol.5 , ASM International, Materials Park , OH , 1992 , Page: 497-509
Koaf.H. , Leea c.y. , Koac.J. ,chuT.c. ,carbon , Blaise Pascap,France,2005, 559-565
BHARAT Bhushan , B.K. Gupta , Handbook of Tribology : Materials, Coatings , and Surface theatments , McGraw – Hill , New York 1991,Page: 59-60
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