structural characteristics and tribological properties of tialcr(si)cn nanocomposite films coated on the spk 1.2080 tool steel using pvd technique

نویسندگان

mohammad hassan dadkhah tehrani

malek-ashtar university of technology 83145-115, isfahan, ir iran. abdolreza jafari tadi

malek-ashtar university of technology yaghoub yaghoubi askarabad

islamic azad university 81595-158, isfahan, ir iran. majid karimian

islamic azad university 81595-158, isfahan, ir iran. kamran amini

چکیده

in the present work, structural characteristics and tribological properties of the ti-al-cr-(si)-c-n nanocomposite films coated on the spk 1.2080 tool steel bypvd technique have been investigated. the pvd coating process was carried out using ti (si) al and cral cathodes at 150 a current, 40 v bias and (ar)0.1(ch4)0.45(n2)0.45 gas mixture for 50 min. evaluations were conducted by om, fesem, afm, xrd, nano and micro-indenters, and pin-on-disk tribometer. the uniform films with an about 2.5 μm thickness, and 11.7 and 9.5 nm crystallite size values were respectively formed on the ti-al-cr-c-n and ti-al-cr-(si)-c-n coated specimens. surface hardness of the ti-al-cr-c-n and ti-al-cr-si-c-n-coated samples was respectively obtained 8.7 and 10.8 gpa compared to 2.16 gpa for the un-coated substrate. roughness (rms), reduced modulus (e) and h/e ratio related to the si-incorporated film were respectively determined 4.6 nm, 477 gpa and 0.081 than that of the 9.7 nm, 364 gpa and 0.075 for the si-emptied film. tribological properties were significantly enhanced by both the films particular the si-incorporated kind.

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عنوان ژورنال:
journal of advanced materials and processing

جلد ۵، شماره ۱، صفحات ۶۹-۸۰

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