ЗНОСОСТІЙКІСТЬ ЕЛЕКТРОІСКРОВИХ ПОКРИТТІВ З КОМПОЗИЦІЙНИХ МАТЕРІАЛІВ (TiB2-SiC)-(Ni-Cr)
نویسندگان
چکیده
منابع مشابه
Synthesis and liquid phase sintering of TiN/TiB2/Fe–Cr–Ni nanocomposite powder
Nanostructured TiN/TiB2/Fe–Cr–Ni composite powder has been prepared via high energy ball milling. Ti and BN powders are reacted to form uniform mixture of TiN and TiB2 within 2 h of milling by a mechanically activated self-sustaining reaction (MSR). The crystallite sizes of TiN nd TiB2 are about 7 and 16 nm, respectively, after 32 h of milling. Through liquid phase sintering and optimizing the ...
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The steady-state creep rate of Ni-base metallic foams, with superalloy composition (in wt. pct) Ni7.8∼9.1Al (relative density, ρ = 2.5-2.6) and Ni-13.5∼16.6Cr-5.1∼8.9Al (ρ = 2.8∼3.0), was measured under a range of temperatures (680∼825°C) and applied stresses (0.1∼0.3 MPa), and compared with that of NiAl intermetallic foams (ρ = 5.3). The stress exponent and activation energy are within the exp...
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متن کاملLaser Welded Ni-Cr Dental Alloys Inspection
Minor problems arising from optimizations by welding of fixed prostheses frameworks can be identified by macroscopic and microscopic visual inspection. The purpose of this study was to highlight the visible discontinuities present in the laser welds of dental Ni-Cr alloys. Ni-Cr base metal alloys designated for fixed prostheses manufacture were selected for the experiments. Using cast plates, p...
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ژورنال
عنوان ژورنال: Problems of Friction and Wear
سال: 2009
ISSN: 0370-2197
DOI: 10.18372/0370-2197.51.3587