Nickel Chromium Alloy
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. ESTUDO DO MATERIAL PARTICULADO ATMOSFÉRICO E METAIS ASSOCIADOS ÀS PARTÍCULAS TOTAIS EM SUSPENSÃO NA CIDADE DE OURO PRETO, MG
vii SUMMARY Airborne particles and the substances associated in them can cause damages to the human health, flora and fauna, to buildings and particularly monuments. Therefore, knowledge of the levels of these particles in the air is important for the establishment of preventive actions. This work had as an objective to study the particles carried by the air
Publicado em: 2005
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14. In vitro study of the fit of cast post and core, obtained from different acrylic resin patterns / Estudo in vitro da adaptação de retentores intra-radiculares fundidos, modelados com diferentes resinas acrílicas autopolimerizáveis
Endodontically treated teeth are often mutilated by caries and access requirements. The remaining structure requires special treatment to prevent further destruction. When a large portion of the clinical crown has been lost, it is often impossible to achieve sufficient anchorage of a restoration in the remaining dentin. In such situations, a root-canal-retai
Publicado em: 2005
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15. Oxidation - Nitridation of Ni-Cr-Al alloys
A series of alloys containing 24-36 wt pct Cr and 13.5 - 25.0 wt pct Al was reacted with air at 1100°C for 260 h. The products of isothermal reaction were scales of a-Al2O3 plus small amounts of Cr2O3. These grew according to parabolic kinetics, interrupted by episodic weight losses caused by partial spallation. No nitridation occurred during the isothermal
Materials Research. Publicado em: 2004-03
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16. Estudo "In Vitro" da lisura da superfície das ligas de titânio e níquel-cromo, submetidas à ciclagem térmica em intervalos de tempo, com a utilização da rugosimetria. / "In vitro" study of the surface smoothness of two kinds of alloys - titanium and nickel - chromium, submitted to thermo cycling at intervals, through rugosimetry.
The resistance capacity to corrosion to which the dental prosthesis made in mettalic alloys are subject has a major importance in the dental clinic, due to the occurance of possible biological reactions such as, for example, allergic symptoms and degradation of restorations. As there are several factors acting in the oral medium, every restoration material,
Publicado em: 2000
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17. Resistência de união entre o titânio fundido e cimentos resinosos, comparada com a de uma liga de níquel-cromo. / Tensile bond strength of titanium and a nickel-chromium alloy cemented with resin cements.
O objetivo da pesquisa foi avaliar a resistência de união entre o titânio fundido e cimentos resinosos, comparada com a de uma liga de níquel-cromo. Os fatores estudados foram: cimentos (Enforce, Cimento de resina 3M, Cement-it); conjugação liga/ revestimento ( titânio obtido com revestimento com a case e sem a case e liga de níquel-cromo, com fosfat
Publicado em: 2000
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18. Avaliação da adaptação cervical de coroas totais metalicas com diferentes terminos antes e apos a cimentação
The purpose of this study was to analyse the cervical fits before and after cementation of full cast crowns made with nickel-chromium alloy (Verabond 11), with three different marginal designs: 45-degree chamfered, 20-degree bevel shoulder and right shoulder, on the bovino teeth with zinc phosphate, glass ionomer and resin cements. Ninety crowns were cast wi
Publicado em: 2000
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19. Estudo da adesão liga (Ni-Cr)-porcelana em protese dentaria
The main purpose of this s wore was the study of adherence between nickel-chromic um alloys and parcel al n for use in dental restorations. A detailed bibliographic revision was performed and two commercial nickel-chromium alloys was selected. one of them with low concentration of beryllium. Hardness test microstructural analysis of the all oys analysis of t
Publicado em: 1992