Tribocorrosion Failure Mechanism of TiN/SiOx Duplex Coating Deposited on AISI304 Stainless Steel

Abstract

TiN/SiOx duplex coatings were synthesized on AISI304 stainless steel by plasma immersion ion implantation and deposition (PIIID) followed by radio frequency magnetron sputtering (RFMS). The microstructure and tribocorrosion failure behaviors of the duplex coatings were investigated by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, atomic force microscopy, reciprocating-sliding tribometer, and electrochemical tests. The as-deposited duplex coating had a two-layered columnar growth structure consisting of face-centered cubic TiN and amorphous SiOx. Sliding tests showed that the TiN interlayer had good adhesion with the substrate, but the SiOx layer suffered from severe delamination failure. Friction force induced a number of micro-cracks in the coating, which provided channels for the diffusion of NaCl solution. The tribocorrosion test showed that the duplex coating exhibited a lower wear-performance in NaCl solution than in ambient atmosphere. Multi-scale chloride ion corrosion occurred simultaneously and substantially degraded the bonding strength of the columnar crystals or neighboring layers. Force-corrosion synergy damage eventually led to multi-degradation failure of the duplex coating. The presented results provide a comprehensive understanding of the tribocorrosion failure mechanism in coatings with duplex architecture.

Influence of Alloy Substrate Treatment on Microstructure and Surface Performances of Arc-Ion Plated Gold-Like Film

“…The surface of the substrate was directly exposed after the TiN particles were peeled off, which may cause corrosion of the substrate. The film on the polished surface (Figure 4c) had a small number of holes, which reduced the compactness of the film and provided sites for pitting corrosion, which was not conducive to improving the corrosion resistance of the substrate [23]. For the ZrN film, the films on the smooth surface (Figure 4d) and polished surface (Figure 4f) were dense, but there was a small number of holes.…”

Surface Modifications of Medical Grade Stainless Steel

“…This coating imparted a lower wear performance in NaCl, and synergistic wear-corrosion damage greatly accelerated the failure of the duplex coating. Although the TiN interlayer exhibited good adhesion, the SiOx layer suffered from severe delamination during the sliding test in air [50]. In a separate study, an organic silicone film was coated on MSS using plasma deposition with a hexamethyldisilazane (HMDSZ) precursor.…”

Comparison of corrosion, physico-mechanical and wear properties of TiN, ZrN, TixZr1-xN and Ti1-xAlxN coatings

“…Operating experience and test results of cutting tools and friction pairs show that their premature failure, as a rule, caused by low wear-resistant, corrosive and physicomechanical (functional) properties of their materials in the friction zone. Single-layer coatings more often do not possess a set of these functional properties [1][2][3][4]. This prompted researchers to create multilayer nanostructured coatings that improve the durability of tools and friction pairs under conditions of exposure to abrasive, thermal, power loads and an aggressive environment.…”