Temat: abrasive blasting - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Examination of Wetting by Liquid Zinc of Steel Sheets Following Various Kinds of Abrasive Blasting
Autorzy:: Cecotka, M.
Dybowski, K.
Klimek, L.
Lipa, S.
Rylski, A.
Sankowski, D.
Wojciechowski, R.
Bąkała, M.
Powiązania:: https://bibliotekanauki.pl/articles/352820.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: abrasive blasting
dip zinc coating
surface preparation
wettability
Opis:: Abrasive blasting is one of the methods of surface working before hot-dip zinc-coating. It allows not only to remove products of corrosion from the surface, but it also affects the quality of the zinc coating applied later, thereby affecting wettability of surface being zinc-coated. The surface working can be done with different types of abrasive material. The paper presents an effect of the method of abrasive blasting on wetting the surface of steel sheets by liquid zinc. Steels sheets following blasting with Al₂O₃ of different granularity and shot peening were examined. The worst wetting was recorded for a sample following shot peening - the results are below those for the reference test conducted for a sample not previously subjected to any treatment. Samples following abrasive blasting have similar parameters, regardless of the size of grain used for the treatment.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 2B; 1069-1074
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The effect of abrasive blasting on the strength of a joint between dental porcelain and metal base
Autorzy:: Pietnicki, K.
Wołowiec, E.
Klimek, L.
Powiązania:: https://bibliotekanauki.pl/articles/306577.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: abrasive blasting
metal–porcelain joint
strength
materiały stomatologiczne
połączenie
moc
porcelana
metal
Opis:: This paper presents the effect of selected parameters of abrasive blasting on the strength of a joint between dental porcelain and metal base. Experiments were conducted for different grain sizes of abrasive material and different blasting angles, with a constant blasting pressure. InLine dental porcelain was fused on samples of cobalt-chromium alloy following abrasive blasting; they were subsequently subjected to shearing forces on a testing machine. The fractures were observed under an electron scanning microscope in order to determine the character and course of fracturing. Strength tests showed that the grain size of abrasive material was a parameter with the greatest effect on the strength. The best effects were achieved for samples subjected to abrasive blasting with material with grain size of 110 μm. No statistically significant differences were found for the strength of samples worked at different angles. The results of the fractographic examinations have shown that in all the samples, fracturing occurred mainly along the porcelain–metal boundary, with few cases of fracturing through porcelain.
Źródło:: Acta of Bioengineering and Biomechanics; 2014, 16, 1; 63-68
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Influence of Chemical Surface Treatment on the Corrosion Resistance of Titanium Castings Used in Dental Prosthetics
Autorzy:: Burnat, B.
Parchańska-Kowalik, M.
Klimek, L.
Powiązania:: https://bibliotekanauki.pl/articles/381457.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: titanium castings
prosthetic components
abrasive blasting
chemical treatment
corrosion tests
odlewy z tytanu
elementy protetyczne
piaskowanie
obróbka ścierna
Opis:: Air abrasion process is used for cleaning casting surface of prosthetic components, and to prepare the surface of these elements for the application of veneering items. Its side effect, however, is that abrasive particles are embedded in the treated surface, which can be up to 30% of the surface and it constitutes the side effect of this procedure. Such a significant participation of foreign material can not be indifferent to the properties of the surface. Embedded particles can be the place of stress concentration causing cracking of ceramics, and may deteriorate corrosion resistance by forming corrosive microlinks. In the latter cases, it would be advisable to remove elements embedded into the surface. The simplest method is chemical etching or electrochemical one. Nevertheless, these procedures should not significantly change the parameters of the surface. Among many possible reagents only a few fulfills all the above conditions. In addition, processing should not impair corrosion resistance of titanium, which is one of the most important factors determining its use as a prosthetic restoration in the mouth. The study presented results of corrosion resistance of titanium used to make prosthetic components by means of casting method, which were subjected to chemical processing designed to remove the embedded abrasive particles. The aim of the study was to investigate whether etching with selected reagents affects the corrosion resistance of titanium castings. For etching the following reagents were used: 30% HNO3 + 3% HF + H2O, HNO3+ HF+ glycerol (1:2:3), 4% HF in H2O2, 4% HF in H₂O, with a control sandblasted sample, not subjected to etching. Tests demonstrated that the etching affected corrosion properties of test samples, in each case the reduction of the corrosion potential occurred - possibly due to the removal of particles of Al2O3 from the surface and activation of the surface. None of the samples underwent pitting corrosion as a result of polarization to 9 V. Values of the polarization resistance, and potentiodynamic characteristics indicated that the best corrosion resistance exhibited the samples after etching in a mixture of 4% solution of HF in H2O2. They showed very good passivation of the surface.
Źródło:: Archives of Foundry Engineering; 2014, 14, 3; 11-16
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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