Results 21 to 30 of about 10,227 (256)

Analysis of the distribution of microhardness, mineral, and organic content of human, bovine, and ovine teeth

Odontología Sanmarquina, 2023
Objetive. Human teeth have been commonly used for in vitro and in situ studies. Cu­rrently, other animals’ teeth have been purposed for dental research to overcome human teeth’ problematic availability. This study aimed to investigate the enamel and dentin from human, bovine, and ovine teeth concerning the microhardness, organic, and inorganic contents
Felipe Weidenbach Degrazia, Jaqueline Wermeier Rippel, Isadora Martini Garcia, Bruna Genari, Susana Maria Werner Samuel, Fabrício Mezzomo Collares   +5 more
openaire   +2 more sources

CHANGES IN THE DISTRIBUTION OF HARDNESS AND MICROHARDNESS ACCORDING TO THE CROSS SECTION OF CONTINUOUS TRACK DETAILS AS A RESULT OF THEIR WEAR

Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences), 2022
The performance of the “base-applied layer” system, that forms the contact surface of parts that are subject to intensive wear, significantly depends on the gradient of mechanical characteristics in depth in the near-surface areas of contact parts. That is why the initial data before the design of the technology determines the hardness of the base ...
V. Peremitko, M. Lee, D. Kriventsov
openaire   +3 more sources

Influence of inhomogeneity of the polymerization light beam on the microhardness of resin cement under a CAD-CAM block

, 2022
Statement of problem: The beam profile of a light polymerization unit shows an inhomogeneous distribution. Therefore, the light passing through indirect restorations may be inhomogeneous and affect the polymerization of the resin cement.
박성호, 김광만
core   +1 more source

Microstructures and Electrochemical Studies of Flux-Cored Arc and Flux-Copper Back Welded EH36 Steel

International Journal of Electrochemical Science, 2018
EH36 high strength steel plates were welded using flux-cored arc welding (FCAW) and flux copper backing (FCB) one-side submerged-arc welding (SAW) technology. The microstructure, microhardness distribution, and electrochemical behavior of the joints were
Kai Wang, Qinghua Lu, Yaoyong Yi, Ben Niu, Jianglong Yi, Zexin Jiang, Jinjun Ma   +6 more
doaj   +1 more source

The Influence of Two-Jet Gas Shielding Parameters on the Structure and Microhardness of Steel 45 Joints during Consumable Electrode Welding

Metals, 2023
The paper presents the study results of the parameters influence of arc welding with a consumable electrode with two-jet gas shielding in CO2 on the structure and microhardness of high-strength steel 45 welded joints with slotted edges.
Dmitry A. Chinakhov, Dmitry Pavlovich Il’yashchenko   +1 more
doaj   +1 more source

Microscopic Analysis and Electrochemical Behavior of Fe-Based Coating Produced by Laser Cladding

Metals, 2017
The effect of laser cladding on the surface microstructure and corrosion properties of coated/uncoated specimens were investigated. Fe-based alloy coating was produced on 35CrMo steel by laser cladding.
Jinlin Chen, Yajun Zhou, Chen Shi, Daheng Mao   +3 more
doaj   +1 more source

Metallographic Determination of Strain Distribution in Cold Extruded Aluminum Gear-Like Element

Metals, 2020
In this study, an experimental, metallographic method for determining strain distribution in a cold extruded aluminum gear-like element, based on the dependence of recrystallized grain size on prior deformation, was devised in order to overcome design ...
Plavka Skakun, Dragan Rajnovic, Petar Janjatovic, Sebastian Balos, Andrei Shishkin, Pavel Novak, Leposava Sidjanin   +6 more
doaj   +1 more source

Study on Microstructure and Properties of Ni60A/WC Composite Coating by Alternating-Magnetic-Field-Assisted Laser Cladding

Micromachines, 2022
Ni60A/WC composite coating is prepared on 45 steel substrate by alternating-magnetic-field-assisted laser cladding. We compare the effects of different magnetic field intensity on WC particle distribution, microstructure, phase composition, microhardness
Yuxu Zhu, Houming Zhou, Zixin Chen, Zeda Wang, Fangjia He, Caixing Xu   +5 more
doaj   +1 more source

Power Distribution across the Face of Different Light Guides and Its Effect on Composite Surface Microhardness [PDF]

Journal of Esthetic and Restorative Dentistry, 2008
ABSTRACTPurpose:  The aim of this study was to examine the influence of light guide type on the distribution of irradiant emission from a light‐emitting diode (LED) curing light and to measure the effect of light dispersion on surface microhardness across the top and bottom surfaces of two types of composite resins.Materials and Methods:  A laser beam ...
Kraig S, Vandewalle, Howard W, Roberts, Frederick A, Rueggeberg   +2 more
openaire   +2 more sources

Study on Vacuum Brazing Technology of Polycrystalline Diamond and High Speed Steel [PDF]

Cailiao Baohu, 2021
In order to realize the connection between polycrystalline diamond (PCD) and high speed steel, Ag-Cu-Ti-In solder was used for vacuum brazing. The brazing temperature, heating current and holding time were selected as experimental factors by Box-Behnken ...
WU Qi-liang, YU Ai-bing, SUN Lei, ZHAO Shuo, LI Yi, LI Jian-yong
doaj   +1 more source