Wear behaviour of boronized and duplex-treated AISI 4140 steel against DLC-coated boronized AISI 4140 disc

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 mm 3 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.

Structure and mechanical properties of diamond‐like carbon films prepared by pulsed laser‐induced cathodic vacuum arc technique

“…Diamond-like carbon (DLC) films, transition metal nitride and carbide films that are prepared on cutting tools and drillings have been applied to improve their properties. [1][2][3][4][5] However, the DLC films, especially, tetrahedral amorphous carbon (ta-C) films, have attracted considerable interest in properties comparable with those of nitride and carbide films, such as high hardness, low friction coefficient, excellent wear resistance, and anti-affinity with wear debris. [6][7][8][9] Among the many preparation methods for DLC films, the filtered cathodic vacuum arc (FCVA) technique is an effective and common method.…”

“…With the rapid and high‐quality development of the manufacturing industry, better performance of micro‐cutting tools and drillings that can be used in the medical, printed circuit board (PCB) and motors are more in demand. Diamond‐like carbon (DLC) films, transition metal nitride and carbide films that are prepared on cutting tools and drillings have been applied to improve their properties 1–5 . However, the DLC films, especially, tetrahedral amorphous carbon (ta‐C) films, have attracted considerable interest in properties comparable with those of nitride and carbide films, such as high hardness, low friction coefficient, excellent wear resistance, and anti‐affinity with wear debris 6–9 …”

Wear behaviour of different nano particles coating on Al6061 substrate

“…In addition, Jeyaraj et al [6] found that the amount of particle reinforcement and its distribution homogeneity plays a vital role in the functional properties of the composite coating. The different nano particles used in the Ni matrix coating are SiC [5,7], Al 2 O 3 [8], ZrO 2 [9], TiO 2 [10,11], SiO 2 [12], B 4 C [13], Si 3 N 4 [14], CNT [15], TiC [16], diamond like carbon (DLC) [17], etc. The enhanced properties and low cost of Al 2 O 3 particles in Ni matrix coating made it more popular.…”

Wear Resistance of Medium Carbon Steel with Different Microstructures

“…Compared to mineral oil, the Jatropha raw oil reduced both friction and wear for AISI1040 samples. Litoria et al [ 13 ] studied the wear behavior of AISI4140 steel samples with various surface conditions sliding against DLC-coated boronized discs of AISI4140 steel. Singh et al [ 14 ] studied the tribological behavior of shot-peened quenched-tempered SAE-6150 steel specimens.…”