کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8026572 | 1517607 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel chemical process for preparing h-BN solid lubricant coatings on titanium-based substrates for high temperature tribological applications
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Hexagonal boron nitride (h-BN) coatings prepared from a polyborazylene (PBN) polymeric precursor were deposited on titanium-based substrates and annealed via infra-red irradiation in a rapid thermal annealing (RTA) furnace. Crystallized h-BN coatings were obtained by adding Li3N as a catalyst at a relatively low annealing synthesized temperature (~ 1200 °C). The resulting coatings had a thickness of 15 μm and were evenly coated and homogenous. The coating/substrate adhesion was evaluated by the micro-scratch test, with the value of best critical load occurring at approximately 12 N against a Rockwell C diamond point. This adhesion increased with the growth of the additive ratio of Li3N. The friction coefficient measurements were carried-out by tribological testing at 360 °C using a cylinder/disk configuration. Stainless steel 15-5PH cylinders were used as counter bodies to the titanium disk. The friction coefficient was reduced from 0.72 for the Ti/stainless tribosystem to 0.35 for the Ti/h-BN/stainless tribosystem.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 272, 25 June 2015, Pages 366-372
Journal: Surface and Coatings Technology - Volume 272, 25 June 2015, Pages 366-372
نویسندگان
S. Yuan, B. Toury, S. Benayoun,