Cyclic oxidation behavior of plasma surface chromising coating on titanium alloy Ti–6Al–4V

Abstract The cyclic oxidation behavior of plasma surface chromising coating on titanium alloy (Ti–6Al–4V) was researched in air at 650 °C, 750 °C and 850 °C. A NiCrAlY coating was prepared by multi-arc ion plating as a comparison. The surface morphologies, microstructures and phases of both coatings before and after oxidation were investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffractometry (XRD). The results show that the chromising coating consisted of an outer layer of loose Cr deposition, an intermediate layer of compact Cr deposition and an inner Ti–Cr mutual diffusion layer. The multilayer oxide scales formed in the oxidation process, which has the better cyclic oxidation resistance compared with NiCrAlY thermal barrier coating. However, the brittleness of Ti(Cr, Al) 2 laves phase resulted in spallation of oxide scales at 750 °C and 850 °C.

[1]  A. Biswas,et al.  Surface characterization and mechanical property evaluation of thermally oxidized Ti-6Al-4V , 2009 .

[2]  S. W. Park,et al.  Oxidation behavior of AgCuTi brazing alloys , 1999 .

[3]  M. Sebastiani,et al.  Production and characterization of duplex coatings (HVOF and PVD) on Ti-6Al-4V substrate , 2006 .

[4]  S. Tsipas,et al.  Boride coatings obtained by pack cementation deposited on powder metallurgy and wrought Ti and Ti–6Al–4V , 2010 .

[5]  B. Yilbas,et al.  Laser gas-assisted processing of carbon coated and TiC embedded Ti–6Al–4V alloy surface , 2010 .

[6]  I. J. Polmear.  6 – Titanium alloys , 2005 .

[7]  M. Sun,et al.  Structural characterization of titanium oxide layers prepared by plasma based ion implantation with oxygen on Ti6Al4V alloy , 2006 .

[8]  Pingze Zhang,et al.  The role of process parameters in plasma surface chromising of Ti2AlNb-based alloys , 2009 .

[9]  Chunxiang Cui,et al.  Titanium alloy production technology, market prospects and industry development , 2011 .

[10]  A. Huntz,et al.  Effect of silicon on the oxidation resistance of 9% Cr steels , 2003 .

[11]  Shibayan Roy,et al.  X-ray diffraction line profile analysis of deformation microstructure in boron modified Ti-6Al-4V alloy , 2011 .

[12]  Xiuyan Li,et al.  Fabrication of Zr and Zr–N surface alloying layers and hardness improvement of Ti–6Al–4V alloy by plasma surface alloying technique , 2012 .

[13]  T. Narita,et al.  Sulfidation processing and Cr addition to improve oxidation resistance of TiAl intermetallics in air at 1173 K , 2000 .

[14]  V. Wesling,et al.  Cavitation erosion resistance of Ti6Al4V laser alloyed with TiC-reinforced dual phase intermetallic matrix composites , 2007 .

[15]  G. Moskal,et al.  Diffusion aluminide coatings for TiAl intermetallic turbine blades , 2011 .

[16]  I. Gurrappa,et al.  Characterization of titanium alloy Ti-6Al-4V for chemical, marine and industrial applications , 2003 .

[17]  A. Mesgar,et al.  Adhesive and cohesive properties by indentation method of plasma-sprayed hydroxyapatite coatings , 2007 .

[18]  Xiao Huang,et al.  Cyclic oxidation behavior of a beta gamma powder metallurgy TiAl–4Nb–3Mn alloy coated with a NiCrAlY coating , 2012 .

[19]  Huseyin Cimenoglu,et al.  Oxidation of Ti-6Al-4V alloy , 2009 .

[20]  N. Schell,et al.  Structural characterisation of hardening of Ti-Al-V alloys after nitridation by plasma immersion ion implantation , 2001 .

[21]  A. Matthews,et al.  Evaluating the effects of plasma diffusion processing and duplex diffusion/PVD-coating on the fatigue performance of Ti–6Al–4V alloy , 2011 .

[22]  Fu-ping Wang,et al.  Growth characteristics of plasma electrolytic oxidation ceramic coatings on Ti–6Al–4V alloy , 2008 .

[23]  K. F. Miller,et al.  Some oxidations with Cr(V) , 1979 .

[24]  C. Liu,et al.  Oxidation resistance and mechanical properties of Laves phase reinforced Cr in-situ composites , 2000 .

[25]  Zhongping Yao,et al.  Composition and mechanical properties of hard ceramic coating containing α-Al2O3 produced by microarc oxidation on Ti–6Al–4V alloy , 2005 .

[26]  K. Sreekumar,et al.  Failure analysis of titanium alloy (Ti6Al4V) fastener used in aerospace application , 2010 .

[27]  Kartik Prasad,et al.  Isothermal and thermomechanical fatigue behaviour of Ti–6Al–4V titanium alloy , 2011 .

[28]  D. Peruško,et al.  Cyclic oxidation behaviour of Ti3Al-based alloy with Ni–Cr protective layer , 2008 .

[29]  Taek-Soo Kim,et al.  Surface properties of CrN-coated Ti-6Al-4V alloys by arc-ion plating process , 2005 .