کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7989528 1515943 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical properties and microstructure of Al2O3/TiC based self-lubricating ceramic tool with CaF2@Al (HO)3
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Mechanical properties and microstructure of Al2O3/TiC based self-lubricating ceramic tool with CaF2@Al (HO)3
چکیده انگلیسی
The CaF2@Al2O3 coated powder with shell-core structure was prepared by liquid-phase non-uniform nucleation method. Based on the successful preparation of Al(OH)3 coated CaF2 powder, Al2O3/TiC self-lubricating tool was prepared by wet dispersion mixing and vacuum hot pressing sintering process. The microstructure and performance of the self-lubricating ceramic tool with different volume content of CaF2@Al(OH)3 coated powders were investigated. The results show that when the CaF2@Al2O3 content is 10 vol%, the comprehensive mechanical properties of Al2O3/TiC/CaF2@Al2O3 tool materials is the best, the hardness is 16.86 GPa, the flexural strength is 662 MPa, and the fracture toughness is 6.34 MPa·m1/2. Compared with the traditional Al2O3/TiC/10 vol%CaF2 self-lubricating ceramic cutting tools, Al2O3/TiC/10 vol% CaF2@Al2O3 ceramics in flexural strength, fracture toughness and hardness were increased 19.06%, 36.9%, 12.25%, of which the most obvious increase in fracture toughness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 75, September 2018, Pages 50-55
نویسندگان
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