Results 71 to 80 of about 23,616 (256)

Effect of eggshell powder and nano-hydroxyapatite on the surface roughness and microhardness of bleached enamel [PDF]

, 2023
Background: The aim of the study was to evaluate the remineralizing potential of prepared solutions of eggshell powder (ESP) and nano-hydroxyapatite (nHA) on the surface roughness and microhardness of bleached enamel.
Hassan, Shahinaz, Shahinaz Nabil Hassan, Lamiaa Mahmoud Moharam, Moharam, Lamiaa   +3 more
core   +2 more sources

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Surface Roughness and Microhardness of Two Recent CAD/CAM-Materials After Storage [PDF]

, 2014
Objectives: To investigate surface roughness and microhardness of two recent resin-ceramic materials for computer-aided design/computer-aided manufacturing (CAD/CAM) after polishing with three polishing systems.
Diebold, Elisabeth, Lussi, Adrian, Flury, Simon, Peutzfeldt, Anne   +3 more
core  

Effect of theobromine based dental varnish on the enamel surface microhardness- an in vitro study [PDF]

, 2021
Introduction: Theobromine in recent years has been used as a remineralization agent. It demonstrates increased enamel hydroxyapatite crystal size that strengthens the enamel thus making it resistant to acid attack.
Pushpalatha C
core   +1 more source

Microhardness of polyethylene surface modified by chlorosulphonic acid

Polymer Testing, 2000
Chlorosulphonic acid etching of polyethylene produces changes in its surface structure that can be tested by means of microhardness measurements. The results of different microhardness parameters (Mayer's lines, penetration curves, Vickers microhardness and total microhardness) are compared, discussed and related to the structure of polyethylene.
J.M Pereña, V Lorenzo, G Zamfirova, A Dimitrova   +3 more
openaire   +1 more source

Effect of Probiotic Mouthrinses on Surface Microhardness of Esthetic Restorative Materials

The Journal of Contemporary Dental Practice, 2020
To assess the influence of three probiotic mouthrinses on the microhardness of three esthetic materials used for teeth restorations.Thirty specimens of each material: conventional glass ionomer cement (GIC), resin-modified glass ionomer, and resin composite were randomly assigned to three groups. Surface microhardness was measured at baseline.
Bashaer, Altwaim, Fouad, Salama, Shahad, Alogayyel   +2 more
openaire   +2 more sources

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

Comparing the Effect of Topical Acidulated Phosphate Fluoride on Micro- Hardness of Two Fissure Sealants and One Flowable Composite

Journal of Dental School, 2019
Objective: Probable effect of fluoride containing materials like APF on sealants is very important. The purpose of this study is to assess the effect of frequent application of APF (1.23%) on the surface microhardness of two fissure sealants and one ...
Romina Mazaheri, Leila Pishevar, Neda Keyhanifard, Elnaz Ghasemi   +3 more
doaj   +1 more source

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

The Influence of Field‐Assisted Sintering Technology (FAST) Temperature and Cooling Rate on the Microstructural Evolution in Gamma‐Titanium Aluminide Alloy GE4822

Advanced Engineering Materials, EarlyView.
Controlling the Field Assisted Sintering Technology (FAST) parameters, dwell temperature and cooling rate, significantly influences the microstructural evolution in titanium aluminide GE4822. Significant γ‐lamellar colonies develop only upon cooling through the α‐transus.
Jack Krohn, James Pepper, Martin Jackson
wiley   +1 more source