本文
No.6（2003）3.Cutting performance of a Cl-ion implanted tool coated with TiN for machining stainless steel
Atsushi MITSUO, Satoshi UCHIDA and Tatsuhiko AIZAWA
TiN film coated tools were implanted with chlorine-ion and their cutting performance for stainless steel was investigated. Chlorine-ion implantation up to 1x1017 ions/cm2 was performed at energy levels below 100 keV. The modified surface layers were characterized by an X-ray diffractometer (XRD) for crystal structure identification, and by a glow discharge optical emission spectrometer (GD-OES) for chemical composition analysis. Friction and wear tests were carried out using a pin-on-disk tribometer with stainless steel balls used as a counter material. Cl-ion implanted tools were tested for turning properties in relation to a stainless steel rod of 30 mm in diameter that was not lubricated. The maximum concentration of Cl was around 10 mol% although the concentration profile showed Gaussian-like distribution. Any changes such as alloyment and precipitation were not recognized in the crystal structure of TiN film by the Cl-ion implantation. The Cl-ion implantation reduced the friction coefficient of the TiN films against the stainless steel balls. The measured cutting force against stainless steel in turning was also reduced by the Cl-ion implantation into TiN coated tool.
Keywords
Ion implantation, Chlorine ion, Friction, Titanium nitride coated tool, Cutting performance
