Surface modification and cleaning enhancement of TaSi(N) films with dilute hydrofluoric acid

2000 ◽  
Vol 18 (4) ◽  
pp. 1211-1215 ◽  
Author(s):  
P. J. S. Mangat ◽  
W. J. Dauksher ◽  
R. Whig ◽  
W. L. O’Brien
Keyword(s):  
Surface Modification ◽  
Hydrofluoric Acid

scholarly journals Surface modification of magnesium alloy AZ31 by hydrofluoric acid treatment and its effect on the corrosion behaviour

2010 ◽  
Vol 518 (18) ◽  
pp. 5209-5218 ◽  
Author(s):  
T.F. da Conceicao ◽  
N. Scharnagl ◽  
C. Blawert ◽  
W. Dietzel ◽  
K.U. Kainer
Keyword(s):  
Surface Modification ◽  
Magnesium Alloy ◽  
Hydrofluoric Acid ◽  
Acid Treatment ◽  
Corrosion Behaviour ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31

Surface modification of Y3Al5O12:Ce3+ phosphor by hydrofluoric acid wet etching

2013 ◽  
Vol 136 ◽  
pp. 351-354 ◽  
Author(s):  
Zhijiang He ◽  
Weihai Cheng ◽  
Zebin Li ◽  
Ying Liu ◽  
Qiongrong Ou ◽  
...  
Keyword(s):  
Surface Modification ◽  
Hydrofluoric Acid ◽  
Wet Etching

scholarly journals INFLUENCE OF DIFFERENT SURFACE TREATMENTS OF CAD/CAM HYBRID NANOCERAMICS CROWNS ON BOND STRENGTH OF RESIN COMPOSITE CEMENT

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Valentina Veselinović ◽  
Rebeka Rudolf ◽  
Nataša Trtić ◽  
Verica Pavlić ◽  
Radmila Arbutina ◽  
...  
Keyword(s):  
Surface Modification ◽  
Hydrofluoric Acid ◽  
Technological Development ◽  
Resin Composite ◽  
Testing Machine ◽  
Resin Cement ◽  
Control Group ◽  
Retention Force ◽  
Group I ◽  
Cad Cam

Introduction: Urgent demand for high-esthetic material, which at the same time has the possibility of absorption of mastication stress, has led to the technological development of hybrid nanoceramics used in CAD / CAM technology. Aim: The aim of the study was to evaluate the effects of different surface modification of hybrid nanoceramic crowns on the quality of the cement retention and the influence of the mastication stress after one year of function. Material and methods: 50 hybrid nanoceramic CAD/CAM crowns (CERASMART, GC) are cemented on titanium implant abutments with self-adhesive resin cement (G-CEM, LinkAce). The samples were divided into five main groups according to surface treatment (n=10): I (sandblasted with 50 microns Al2O3), II (treated with CERAMIC PRIMER II, GC), III (treated with 5% hydrofluoric acid), IV (treated with combination of 5% hydrofluoric acid and CERAMIC PRIMER II), V (control, non-treated group). The samples were storaged during 24 hours at 37°C, thermocycled and loaded under 10 000 mechanical cycles loads (simulation of 12 months of function). Retention forces measured in Universal testing machine. The data were represented as mean ± standard deviation, and for statistical analysis ANOVA test was used. Results: The highest initial retention force was demonstrated in the group IV (6.99±1.18), followed by group I (6.22±1.29), group III (5,97±1,25), group II (5,86±1,17) and control group samples (4.92±1.19). A statistically significant decline in retention force was recorded in all tested groups, with the lowest decrease observed in samples treated with a combination of 5% hydrofluoric acid and CERAMIC PRIMER II (6.08 ± 1.03). Conclusion: Mechanical and chemical surface modification can strongly influence the retentions between resin cement and hybrid nanoceramics. The results from this study are suggesting that the most efficient clinical outcome is the combination of 5% hidrofluoric acid and CERAMIC PRIMER II.

Switchable Wettability of Silicon Micro-Nano Structures Surface Produced by Femtosecond Laser

2014 ◽  
Vol 609-610 ◽  
pp. 341-345 ◽  
Author(s):  
X.Q. Wang ◽  
Jian Ning Ding ◽  
Ning Yi Yuan ◽  
S.Y. Wang ◽  
J.H. Qiu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Surface Modification ◽  
Femtosecond Laser ◽  
Surface Morphology ◽  
Hydrofluoric Acid ◽  
Laser Power ◽  
Nano Structures ◽  
Wetting Property

Silicon micro-nanostructures were directly produced by femtosecond laser in air. By varying the laser power, we can tune the surface morphology, the wetting property. As-prepared silicon micro-nanostructures show superhydrophilicity, but with removal of native SiOx, superhydrophobicity is observed without surface modification. And a reversible switch between superhydrophilicity and superhydrophobicity can be realized by immersing samples in hydrofluoric acid and hydrogen peroxide, respectively, for many times.

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