Results 221 to 230 of about 4,745,577 (253)
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STRUCTURE AND MICROHARDNESS OF THE SURFACE AFTER COMBINED TREATMENT
Tekhnicheskiy servis mashinThe wear of the surface layer of parts of various mechanisms leads to the loss of their working properties. There is a need to replace worn parts or carry out repairs with the restoration of operational properties. To restore worn surfaces, the method of electrical contact welding of the tape is widely used.
Andrey Fomin, Nikolay Pankin, Petr Senin
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Effect of preheating and shade on surface microhardness of silorane‐based composites
Journal of Investigative and Clinical Dentistry, 2016AbstractAimThe aim of the present study was to evaluate the effect of preheating and shade on the surface microhardness of silorane‐based composites.MethodsThree shades of two different types of composites were evaluated: a silorane‐based composite and a methacrylate‐based composite.
Marios, Theodoridis +4 more
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Effect of shading the zirconia framework on biaxial strength and surface microhardness
Acta Odontologica Scandinavica, 2008Zirconia ceramics for frameworks of fixed partial dentures can be color shaded to better match the shade of veneering porcelain. The aim of this study was to evaluate the effect of color shading the green-stage zirconia ceramic on some mechanical properties.Zirconia disks (diameter 19 mm, thickness 0.8 mm) were divided into 10 groups of 10 disks each ...
Jenni, Hjerppe +4 more
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The effect of burnishing parameters on burnishing force and surface microhardness
The International Journal of Advanced Manufacturing Technology, 2005According to the results obtained from the boundary condition study of the burnishing process, cylindrical polycrystalline diamond (PCD) tools have been designed and fabricated. We probe deeper in the burnishing process by comparing the mechanics of using cylindrical PCD tools to work on aluminium alloy and brass compared to turning.
Hongyun Luo +3 more
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Odontology, 2014
The purpose of this study was to evaluate the effect of four whitening modalities on surface enamel as assessed with microhardness tester, profilometer, and scanning electron microscopy (SEM). Whitening was performed according to manufacturer's directions for over-the-counter (OTC), dentist dispensed for home use (HW) and in-office (OW) whitening.
So Ran, Kwon +3 more
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The purpose of this study was to evaluate the effect of four whitening modalities on surface enamel as assessed with microhardness tester, profilometer, and scanning electron microscopy (SEM). Whitening was performed according to manufacturer's directions for over-the-counter (OTC), dentist dispensed for home use (HW) and in-office (OW) whitening.
So Ran, Kwon +3 more
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Surface Porous Structure and Microhardness of Intermetallic NiAl Compound
Metallurgical and Materials Transactions A, 2018A porous structure on the surface of the intermetallic NiAl compound was obtained after the fibrous tungsten phase of directionally solidified NiAl-W eutectic alloys was selectively removed by pulsed polarization. Pore shape, diameter, and spacing were dependent on growth rate during directional solidification.
Jianjun Gao +9 more
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[Measuring microhardness of laser exposed tooth surface].
Stomatologie der DDR, 1991In principle it is possible to homogenize the enamel surface by melting structural elements with the continuous wave CO2 laser. Using the precision instrument NEOPHOT 2 (Carl Zeiss JENA) the microhardness of extracted laserexposed premolares were tested so as to clarify the functional strain capasity and the mechanical characteristics of laserexposed ...
R, Florin, C, Herrmann, W, Bernhardt
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Microhardness Studies of Intact Surface Enamel
Journal of Dental Research, 1957R C, CALDWELL +3 more
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