Structure and Tribological Characteristics of TiAlN Coatings with In, Sn, and Pb Additions

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发表日期：

2024年5月1日

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A. A. Lozovan,
S. V. Savushkina,
S. Ya. Betsofen,
M. A. Lyakhovetskii,
I. A. Nikolaev,
E. Yu. Zhukov,
E. A. Danilina

摘要

Abstract

The structure and tribological characteristics of 1-μm-thick TiAlN-based coatings with soft metal additions (In, Sn, Pb), which are prepared by reactive magnetron sputtering of separated cathodes, are studied. The coatings are found to have a columnar nanocrystalline composite structure. The Al_xTi_{1 –} _xN, In(Sn) solid solution, Pb, and PbO phases are found in the coatings. The microhardness of the coatings is 280–382 HV. Under reciprocating motion conditions at room temperature, the minimum friction coefficient (μ ≈ 0.20) and high stability of tribological characteristics are achieved for a TiAlN–InSn coating with the atomic ratio Al/(Al + Ti) = 0.53. As the test temperature increases to 100 or 200°C, the wear of the coating and the transfer of the counterbody material decrease; which is related to the presence of the Al_xTi_1–xN phase with a wurtzite structure characterized by a low shear strength.