http://orcid.org/0000-0002-7952-6739
![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
ABSTRACT
Wear behaviour of the AISI 4140 steel specimens with various surface conditions was tested against the DLC-coated boronized disc of AISI 4140 steel. Specific wear rate and coefficient of friction (COF) of the as-boronized (AB) pins at 100 and 150 N loads were substantially lower than the boronized–polished (B-P) pins. COF of AB pins was in the range of 0.07–0.09. However, the COF of B-P pins was about 0.13. In case of the DLC-coated pins, underlying boronized surface outperformed the hardened–tempered surface. Wear properties of the DLC-coated pins were improved with an increase in the load. DLC coating on both contacting surfaces gave the lowest specific wear rate of 0.21 × 10−8 mm3 N−1 m−1, which was about 30 times lower than the B-P pins, and COF was in the range of 0.08–0.09.
Acknowledgements
The authors (AKL, GD, DS) thank IIT Indore for providing scholarships to do Ph.D./M.Tech. research. Authors thank Central Facility of Materials Engineering, IISc, Bengaluru for characterisations. Authors appreciate Dr. R.S. Devan and Dr. S. Chatterjee (both at IITI) for useful discussions/suggestions.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Santosh S. Hosmani http://orcid.org/0000-0002-7952-6739