PSI - Issue 42

Tsanka Dikova et al. / Procedia Structural Integrity 42 (2022) 1520–1528 6 Tsanka Dikova, Angel Anchev, Vladimir Dunchev, Dzhendo Dzhendov, Yavor Gagov / Structural Integrity Procedia 00 (2019) 000 – 000 samples, whose surface is subjected to combined treatment, have the lowest adhesion strength of the porcelain (22.12 MPa). According to the standard, the batch meets the requirements if in more than 66% of the samples the adhesion strength is higher than 25 MPa (ISO 9693:2019). In the milled group, the specimens of subgroup three, treated only with bonding agent, do not meet this requirement. For the SLM alloy, the samples with combined surface treatment (subgroup 4) do not meet the standard. 1525

Fig. 3 Fracture force of porcelain coating on (a) milled and (b) SLM samples.

Fig. 4 Deformation of metallic substrate in debonding of porcelain on (a) milled and (b) SLM samples.

Fig. 5 Adhesion strength of porcelain coating on (a) milled and (b) SLM samples. Red line designates 25 MPa.