Results 141 to 150 of about 55,204 (195)

Fluoride treatment and microhardness of dentin

The Journal of Prosthetic Dentistry, 1979
Effects of various fluoride treatments on the microhardness of human dentin were determined. Treatment with acidulated phosphate-fluoride at pH 3.0 induced a significant (p less than .05) softening when compared to treatment with water. APF at pH 4.0 did not bring about a significant change.
F, Seaman, I L, Shannon
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Microhardness of alloys for porcelain veneering

The Journal of Prosthetic Dentistry, 1982
R e s t o r a t i v e materials for fixed prosthodontics must be capable of withstanding masticatory forces. The mechanical properties of the high-fusing gold alloys differ from those of type III and type IV dental casting alloys. '-'~ The microstructure and mechanical properties of the noble dental alloys are dependent on the composition of the alloy.'
A, Yli-Urpo, E, Uusalo
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Microhardness of phosphate glasses

Journal of Non-Crystalline Solids, 1994
Abstract Vickers microhardness values of some binary and ternary phosphate glasses were determined. An increase of Vickers hardness was obtained on addition of a second alkali oxide (Li2O or K2O) or a divalent oxide (CaO or ZnO) to a sodium phosphate glass. The microhardness values were also seen to be a function of the applied load.
S.N. Salama, H.A. El-Batal
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Microhardness of NaCl Bicrystals

Journal of the American Ceramic Society, 1982
Microhardness measured on cleaved surfaces of nominally pure and lightly calcium‐doped NaCl bicrystals showed a modest increase at the grain boundary that could be attributed to segregation of calcium and a larger increase in both bulk and boundary produced by rapid cooling.
L. B. HARRIS, V. R. HOWES, N. G. CUTMORE
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Microhardness of Multilayer Composites

Inorganic Materials: Applied Research, 2019
When the number of composite layers is increased, the Vickers microhardness and the dependence between the threshold energy density of ablative destruction under the action of a laser pulse related to the average transmittance of light by the composites grow.
A. B. Atkarskaya, S. V. Zaitsev, S. Yu. Kabanov, V. G. Shemanin   +3 more
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Microhardness of single crystals of paratellurite

Izvestiâ Akademii nauk SSSR. Seriâ fizičeskaâ
The values of microhardness of samples of single crystals of paratellurite differing from each other in growth conditions and structural quality were measured. For the plane (110), these values lie in the range — 300—470 kG/mm2. It has been determined that mechanical stresses in paratellurite can lead to significant deviations of values of ...
S. V. Molchanov, S. A. Tretiakov, I. A. Kaplunov, A. I. Ivanova   +3 more
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Ultra-microhardness of vacuum-deposited films I: Ultra-microhardness tester

Thin Solid Films, 1978
Abstract A Vickers type ultra-microhardness tester which is useful for the study of surface films thicker than a few tens of nanometres is described. A diamond triangular cone indenter with a tip radius of 120 nm is employed, and its penetration depth under a given load is observed.
Mineo Nishibori, Koreo Kinosita
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Microhardness of Hg1−xMnxTe

Materials Science and Engineering: A, 2007
Abstract The microhardness of Hg 1− x Mn x Te has been investigated by means of Vickers measurements. First, the Hg 0.93 Mn 0.07 Te single crystal was measured at the applied load varying from 15 to 200 g. The results show that the microhardness decreases with the load increasing from 32.8 to 29.7 kgf mm −2 . The Meyer's law, Hays–Kendall approach
Wang Zewen, Jie Wanqi
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Microhardness of Sclerotic Dentin

Journal of Dental Research, 1977
R, Grajower, B, Azaz, M, Bron-Levi
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Microhardness of cementite

Metal Science and Heat Treatment, 1971
Yu. N. Taran, V. I. Novik
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