The phrase "appearance of defect" is correct and usable in written English.
It can be used in contexts where you are discussing the visible signs or indications of a flaw or imperfection in an object or process.
Example: "The appearance of defect in the product led to a thorough investigation by the quality control team."
Alternatives: "signs of defect" or "indications of flaw".
Therefore, the appearance of defects on the oxide structure is favored, promoting both electronic conduction and faradaic activity.
The weight loss of the coated C/C composites was considered due to the excessive depletion of the outer coating and the appearance of defects in the coating.
The use of reground material also caused the appearance of defects in pedals, i.e. voids, which diminished the fatigue strength.
The main task is to detect whether there are any mechanical reasons that could justify the appearance of defects such as: cracks, nerves and excessive bending and/or warping.
The failure of the double-layer SiC/Cr Al Si coating is thought to occur due to the excessive depletion of the outer Cr Al Si alloy coating and the appearance of defects in the SiO2 glass layer.
The results showed that the prepared coating exhibited excellent oxidation protection ability, after oxidation for 150 h, the weight loss was only 0.21%, which was considered to be the depletion of the outer coating and the appearance of defects in the coating.
But this treatment also influences on individual nanotubes leading to damage [18] (appearance of defects which are observed in Raman spectra) and scission [21].
Ideal graphene consists solely of six-membered rings; the appearance of defects leads to the formation of a number of five- or seven-membered rings in the graphene structure and hence to the curving of flat surface.
We have presented the STM results about Ni-containing nano-sized islasds, as obtained on the Ge(111 -c(2 × 8) and Ag/Ge(111 -c3 × √3 surfaces after Ni deposition and annealing within the range from 470 to 770 K. On both surfaces, the appearance of defects which are typical of the whole range of annealing temperature has been observed.
The longer sonication is accompanied with the spectral red shift of the PL band as a result of access of water molecules to the nanotube surface and with lower emission intensity, because SWNT surface is more exposed to dissolved oxygen that facilitates appearance of defects quenching the PL [11, 12].
