Whitening mouthwash containing hydrogen peroxide decreases enamel microhardness in vitro.
Brazilian Journal of Oral Sciences, 2017 Aim: To assess the effect of a mouthwash containing hydrogen peroxide (HP) on Knoop microhardness (KMH) of bovine enamel. Methods: Fifty-one enamel slabs were polished and divided into groups (n=17), according to the product used during 28 days: HP ...
Fernando Pelegrim Fernandes +4 more
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Effect of time in hardness test on artificially demineralized human dental enamel
Brazilian Journal of Oral Sciences, 2016 A cross-sectional microhardness (CSMH) test was carried out in human dental enamel exposed to a demineralizing solution in order to evaluate two different times of indentation in sound tissue and artificially induced caries.
Mirian de Waele Souchois Marsillac +2 more
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Fatigue life of materials claded with the method of explosive welding [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2018 This paper describes the comparison of fatigue life on bending of two claded materials with the base material. The base material was the carbon steel P3335NH of the thickness of 10 mm and the clad materials was austenitic steels 254SMO and 316L.
Grzegorz Kwiatkowski, Dariusz Rozumek
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Structure, morphology and mechanical properties of electrodeposited composite coatings Ni–P/SiC [PDF]
, 2010 Physical properties of the NiP/SiC deposits are discussed according to the electroplating parameters and heat treatments. The insertion of silicon carbide in the coatings does not modify their rigidity (E = 230 GPa), increases their hardness slightly (50
Alexis, Joël +3 more
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Methods for the Identification of Aircraft Tubing of Plain Carbon Steel and Chromium-Molybdenum Steel [PDF]
The survey of the possibilities for distinguishing between plain carbon and chromium-molybdenum steel tubing included the Herbert pendulum hardness, magnetic, sparks, and chemical tests.
Buzzard, R W, Mutchler, W H
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Comparisons of modified Vasco X-2 and AISI 9310 gear steels [PDF]
Endurance tests were conducted with four groups of spur gears manufactured from three heats of consumable electrode vacuum melted (CVM) modified Vasco X-2. Endurance tests were also conducted with gears manufactured from CVM AISI 9310. Bench type rolling
Townsend, D. P., Zaretsky, E. V.
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Tannin-boron wood preservatives [PDF]
, 2011 Tannin-boron wood preservatives are alternative products to replace water-borne formulations based on copper. Interesting results in protection against fungus (pycnoporus sanguineus) were achieved with formulations based of 20% tannin solutions ...
Pizzi, Antonio +3 more
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The influence of laser hardening on wear in the valve and valve seat contact [PDF]
, 2009 In internal combustion engines it is important to manage the wear in the valve and valve seat contact in order to minimise emissions and maximise economy.
H. Taylor +9 more
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Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys
Cailiao gongcheng, 2020 The effects of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys were investigated by TEM, STEM, hardness tests and electric conductivity tests systematically.
ZHAO Hui +5 more
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Indentation plasticity and fracture in silicon [PDF]
Measurements of the ductile-brittle transition temperature of heavily doped silicon were carried out using indentation techniques. Diamond pyramid hardness tests were performed on the (100) face of heavily doped N-type and P-type and intrinsic silicon ...
Pirouz, P., Rybicki, George C.
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