Synthesis and characterization of titanium-titanium nitride deposition on SS-CRM 487/1 high speed tool steel

ABSTRACT

The present study uses DC magnetron sputtering for synthesis of a TiN and Ti-TiN bilayer on the surface of SS-CRM 487/1 high-speed tool steel. This coating is deposited on the substrate at 400°C. The deposited substrate is characterised by different experimental techniques. The scanning-electron microscopy (SEM) is used for film morphology, cross-sectional examination, and worn-out surfaces. The profilometer is used for measuring the film thickness and roughness. However, the nano-indentation is used to extract the intrinsic hardness and young’s modulus evaluation. The ball on-disc sliding test under dry conditions is employed for tribological properties of deposited high-speed tool steels. The test results indicate the improvement in the wear resistance for the Ti-TiN bilayer except four bilayers as no of layer increases.

KEYWORDS:

• Magnetron sputtering
• worn out surface
• micrograph
• wear depth

Novelty statement

The motivation behind this research on High-Speed Steel (HSS) with Titanium-Titanium Nitride (Ti-TiN) using magnetron sputtering is primarily to enhance the performance and lifespan of cutting tools and other high-wear applications. The Titanium-Titanium Nitride (Ti-TiN) bilayer using magnetron sputtering offers a unique set of advantages and motivations that go beyond single-layer coatings. This approach involves depositing two distinct layers of Ti-TiN on the HSS substrate, each with its own specific properties. This type of research is often driven by the need to improve the mechanical, thermal, and tribological properties of materials to make them more suitable for specific industrial applications such as reduced friction, increased cutting speeds and feeds, enhanced thermal stability, extended tool life, the strengths of each layer, etc.

May I therefore, request you to consider the attached manuscript for the purpose it is being submitted.

I look forward to your early reply.

Kind regards,

Dr Mukesh Raushan K

Dept of Metallurgical & Materials Engg

NIT Raipur, Chhatisgarh, India 492,010

Acknowledgments

Authors acknowledge the National Institute of Technology (Ministry of Education, Govt of India), Raipur, C. G. for financial & research facilities for carrying out this research work.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Ethical approval

This manuscript does not include any human and animal tissue for research work.