Diffusion Niobizing of Titanium Grade 2 by Gas-Contact Method

Abstract:

The work presents results of diffusion niobizing of titanium Grade 2 by gas-contact method. Microhardness, thickness, chemical composition and microstructure were investigation. Diffusion processes was carried out in a two powder mixture. First consisted of ferro-niobium, kaolin and ammonium chloride, second mixture contained pure niobium instead ferro-niobium. The processes were carried out at 950°C, 1000°C and 1050°C for 2, 4 and 6 hours. Due to the geometric surface structure quality and other properties like thickness or microhardness, the best diffusion layer was obtained using first powder mixture and following parameters: temperature 950°C and time of diffusion equal 2 hours. The diffusion layer established in these conditions, had structure of niobium solution in titanium, and niobium content of about 10%. Its hardness was 550 HV0.05 while thickness was 120 μm.

• Periodical: Key Engineering Materials (Volume 669)
• Pages: 158-166
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.669.158
• Online since: October 2015
• Authors: Dariusz Bartkowski, Andrzej Mlynarczak, Adam Piasecki, Waldemar Matysiak, Michal Hatala*, Peter Michalik
• Keywords: Chemical Composition, Diffusion Niobizing, Microhardness, Microstructure, Titanium

References

[1] P. Beraxa, Ľ. Parilák, M. Ulbrichtová, Increasing Service Life of Tools by CVD Coating, Hutnicke listy 3 (2010) 37-41.

[2] T. Burakowski, T. Wierzchon, Engineering of metal surface (Inżynieria powierzchni metali) WNT, Warsaw (1995) (in Polish).

[3] R. Cep et al., Surface roughness after machining and influence of feed rate on process, Key Engineering Materials 581 (2014) 341-347.

[4] B. Kaczmarska, W. Gierulsky, S. Luscinski, The Issue of Reducing the Expectations Gap in Implementing of MRP, Manufacturing and Industrial Engineering 4/9 (2012) 38-40.

[5] J. Marciniak, Z. Paszenda, Biotolerance metallic biomaterials: Splondyloimplantologia advanced treatment of spinal DERO system, Polish DERO group, the Association of study and research of the spine, 2004, pp.133-142.

[6] J. Mihok, J. Markovič, Importance of planning as a core function of strategic management, Management of Companies (Manažment podnikov) 3/2 (2013) 57-58.

[7] A. Mlynarczak, A. Piasecki, Aluminizing diffusion of titanium, Materials Engineering 4 (2010) 1104-1106.

[8] A. Mlynarczak, Modifying the structure and properties of mono- and multi-layer diffusion of chromium carbides of titanium and vanadium steels manufactured by powder, Poznan University of Technology, Lectures, (2005).

[9] A. Panda, J. Duplák, J. Jurko, J. Zajac, Turning bearing rings and determination of selected cutting materials durability, Advanced Science Letters 19/8 (2013) 2486-2489.

DOI: 10.1166/asl.2013.4943

[10] T. Krenický, Implementation of Virtual Instrumentation for Machinery Monitoring, in: Scientific Papers: Operation and Diagnostics of Machines and Production Systems Operational States: Vol. 4, RAM-Verlag, Lüdenscheid, 2011, pp.5-8.

[11] B. Rusinek, A. Stobicka, K. Obtułowicz, Allergy and titanium implants, Allergology - Immunology 5/1 (2008).

[12] U. Sen, S. Pazarlioglu, S. Sen, Niobium boride coating on AISI M2 steel by boro-niobizing treatment, Materials Letters 62 (2008) 2444–2446.

DOI: 10.1016/j.matlet.2007.12.042

[13] T. Wierzchon, E. Czarnowska, D. Krupa, Surface engineering in the production of titanium biomaterials, PW Publishing House, Warsaw, (2004).