Metal concentration dependent mechanical properties of electrodeposited nickel incorporated diamond like carbon (Ni-DLC) thin films studied by nanoindentation

Thickness and microstructure influence on the nanocrystalline Cu thin films’ mechanical properties

“…Consequently with the film thickness and grain size decrease, a clear increase of E as well as H is was observed. This generalized film strengthening (increase of the resistance to elastic ( E ) and plastic ( H ) strains) by reducing the thickness is a typical size effect observed in soft films on hard substrates [13][14][15][16][17][18][19][20][21][22][23][24][25]. In particular, this strengthening effect is intensified as the film thickness decreases because the effects of the mechanical properties mismatch at the film-to-substrate interface become stronger, and a more important influence of the substrate mechanical behavior on the sample effective response is achieved.…”

“…The mechanical properties of thin films can be different than the bulk material depending on the substrate mechanical properties and the film dimensions. Through history, many researchers have given several theoretical [13][14][15] and experimental [16][17][18][19][20][21][22][23][24][25] evidence of this phenomenon. To practical effects, it is generally accepted that for small indentation depths, the elastic modulus (less than 1% to 3% of the total film thickness) and indentation hardness (less than 15% to 10% of the total film thickness) of the films are not affected by the substrate.…”

Study on the Tribological Behavior of Wear and Friction Coefficient on AISI M35 High-Speed Steel with and without DLC Coating

“…mentioned that Young's modulus of steels is generally approximately 210 GPa. In Figure 7, it can be seen that hardness and rigidity do not necessarily obey a positive correlation, although this result is contradictory, for example, to 61 who investigated the effect of DLC nickel doping at different percentage levels. Nano-indentation results showed that the hardness and Young's modulus followed the same trend: increase with the addition of nickel.…”

Structural and Micromechanical Properties of Nd:YAG Laser Marking Stainless Steel (AISI 304 and AISI 316)

“…In particular, the analysis of these samples was problematic. The rippling nature of the 304_20_10 and 316_20_10 load curves demonstrates a high degree of inhomogeneity, manifesting indenter-oscillatory feature discontinuity [48]. These discontinuities point out the soft and fragile nature of tested material.…”