Table 3. AFM Measurements of CS Samples in the Presence and Absence of Doses (250 ppm) of Compound BTB in Deep Oil Well Formation Water for 7 Days at 298 K.

sample	average roughness (Ra), nm	RMS roughness (Rq), nm
CS alloy surface immersed in deep oil well formation water in the absence of inhibitor molecules	260.4	318.2
CS alloy surface immersed in 0.1 oil well formation water after immersion in 250 ppm of BTB	95.3	112.6