کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5464386 | 1517553 | 2017 | 60 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of boron-doped-microcrystalline/nanocrystalline diamond composite coatings in drilling of CFRP
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The drilling performance of four typical types of single-layer diamond coated drills and two-layer boron-doped-microcrystalline/nanocrystalline diamond (BDMC-NCD) composite coated drill is compared, and the growth duration ratio of the NCD layer to the BDMCD layer (N/B) is optimized. It is demonstrated that the BDMC-NCD film synthesized using proper N/B shows nice adhesion, moderate diamond quality and a smooth surface mostly composed of nano-sized diamond grains, so it shows the best comprehensive performance, including the thrust force reduction, the improvement of the hole quality, the slowing of the tool wear and coating peeling, and the elongation of the tool lifetime. Taking the time of the coating peeling into consideration, 3/9 is the optimum N/B for the BDMC-NCD coated drill, and such the drill also performs the longest lifetime using delamination factors (Fd) of 1.2 or 1.3 as the failure criteria. Moreover, the failure mode of the diamond coated drill is the flank wear when using Fd = 1.1 or 1.2 as the failure criteria, while the tool failure should be related to the coating peeling when Fd = 1.3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 330, 1 December 2017, Pages 149-162
Journal: Surface and Coatings Technology - Volume 330, 1 December 2017, Pages 149-162
نویسندگان
Xinchang Wang, Xiaotian Shen, Guodong Yang, Fanghong Sun,