The phrase "a coefficient of friction of" is correct and usable in written English.
It can be used in scientific or engineering contexts when discussing the frictional properties between two surfaces.
Example: "The experiment revealed a coefficient of friction of 0.5 between the rubber and the concrete surface."
Alternatives: "a friction coefficient of" or "a frictional coefficient of".
For our dry lakebed track in South Africa, we're expecting a coefficient of friction of about 0.2 - about the same as driving on ice and snow.
At the maximum hardness a coefficient of friction of 0.25 0.3 is obtained.
We observe a coefficient of friction of 0.42 0.68 for the illite shale, consistent with previous work.
Nattokinase aqueous solution provides a coefficient of friction of 0.2 between PEEK and steel as compared to 0.3 0.35 for dry condition.
Cr3C2 reinforced with 2 wt.% CNT had an elastic modulus 304.5 ± 29.2 GPa, hardness of 1175 ± 60 VH0.300 and a coefficient of friction of 0.654.
Furthermore, a coefficient of friction of 0.16 is measured for an NbB2 −x film sliding against stainless steel with a wear rate of 5 × 10− 7 mm3/Nm.
In humid air, DLC coatings had a coefficient of friction (c.o.f). of 0.1, a very low wear rate, and formed a graphitic transfer film in friction contact.
Al3Mg2 coatings act as a low friction solid lubricant under certain conditions, with a coefficient of friction comparable to that of diamond-like carbon coatings.
The contact between wafer and specimen results in a coefficient of friction μ reaching its maximal value of 0.5 every 60° of rotation.
The coatings were found to have a coefficient of friction in the range of 0.1 0.2, critical load for the coating delamination under a scratch test of 5.7 7.3 N, and microhardness of 21⊁25 GPa.
After each measurement of a coefficient of friction, force distance curves were measured on a bare glass surface to verify that the colloidal probe had not become contaminated by proteins, i.e., if a soft contact was observed upon approach, the probe was discarded.
