Results 91 to 100 of about 140,919 (361)

PENGARUH JUS JERUK DAN MINUMAN BERKARBONASI TERHADAP KEKERASAN PERMUKAAN RESIN KOMPOSIT

ODONTO: Dental Journal, 2017
Background: Orange juice and Carbonat drink contains an acid agent which can affect the surface hardness of composite resin. Changes of surface hardness of composite resin is caused by infiltration of water containing the acid agent that affect the ...
Rusna Fiki Kafalia, Muh. Dian Firdausy, Arlina Nurhapsari   +2 more
doaj   +1 more source

The Influence of Indenter Rotation Angle on The Quality of Vicker Tester Calibration

Kvalita Inovácia Prosperita, 2011
The object of submitted work is to analyze the influence of the rotation of the indenter (diamond pyramid) and test force on the result of Vickers hardness tester calibration using uncertainty analysis, Measurement systems analysis (MSA), analysis of ...
Jozef Petrík
doaj   +3 more sources

Ultrahigh Strength with Suppressed Flow Instability at Liquid Helium Temperature via Coherent Nanoprecipitation in a Medium‐Entropy Alloy

Advanced Functional Materials, EarlyView.
It is demonstrated that severe lattice distortion and coherent nanoprecipitates overcome the strength–ductility dilemma and mitigate discontinuous plastic flow (DPF) at 4.2 K. Such microstructural design enhances both thermal and athermal stress components, leading to exceptional mechanical performance.
Min Young Sung, Tae Jin Jang, Sang Yoon Song, Chang‐Gi Lee, Jun Ho Lee, Young‐Kyun Kim, Sang‐Ho Oh, Byeong‐Joo Lee, Alireza Zargaran, Se‐Ho Kim, Young‐Sang Na, Seok Su Sohn   +11 more
wiley   +1 more source

Evaluation of Polymerization Efficacy in Composite Resins via FT-IR Spectroscopy and Vickers Microhardness Test

Journal of Dental Research, Dental Clinics, Dental Prospects, 2015
Background and aims. Polymerization efficacy affects the properties and performance of composite resin restorations.The purpose of this study was to evaluate the effectiveness of polymerization of two micro-hybrid, two nano-hybrid and one nano-filled ...
T. Jafarzadeh, M. Erfan, M. Behroozibakhsh, M. Fatemi, Reza Masaeli, Yashar Rezaei, H. Bagheri, Yasaman Erfan   +7 more
semanticscholar   +1 more source

Do the Mechanical and Chemical Properties of Invisalign\u3csup\u3eTM\u3c/sup\u3e Appliances Change After Use? A Retrieval Analysis [PDF]

, 2016
Aim: To investigate the mechanical and chemical alterations of Invisalign appliances after intraoral aging. Materials and methods: Samples of Invisalign appliances (Align Technology, San Jose, California, USA) were collected following routine treatment ...
Bradley, T. Gerard, Eliades, George, Eliades, Theodore, Teske, Lauren, Zinelis, Spiros   +4 more
core   +1 more source

A New Family of Ternary Intermetallic Compounds with Dualistic Atomic Ordering – The ZIP Phases

Advanced Materials, EarlyView.
The ZIP phases are ternary intermetallic compounds with dualistic atomic ordering, i.e., they exhibit one face‐centered cubic (fcc; space group Fd3¯$\bar 3$m) variant and one hexagonal (space group P63/mmc) variant. The ZIP phases in the Nb‐Si‐Ni system are the Nb3SiNi2 (fcc) and Ni3SiNb2 (hexagonal) ternary IMCs, crystal structure schematics of which ...
Matheus A. Tunes, Sean M. Drewry, Franziska Schmidt, James A. Valdez, Matthew M. Schneider, Caitlin A. Kohnert, Tarik A. Saleh, Saryu Fensin, Stuart A. Maloy, Cláudio G. Schön, Sylvain Dubois, Omri Tabo, Anna Eyal, Amit Keren, Asaf Pesach, Ganesh K. Nayak, Stavros‐Richard G. Christopoulos, Marco Molinari, Marcus Hans, Nick Goossens, Shuigen Huang, Jochen M. Schneider, Per O. Å. Persson, Jozef Vleugels, Konstantina Lambrinou   +24 more
wiley   +1 more source

Influence of polymerization time and depth of cure of resin composites determined by Vickers hardness

Dental Research Journal, 2012
Background: Adequate polymerization of resin composites could be considered as a crucial factor in obtaining good clinical performance, particularly in stress-bearing areas.
Marco Lombardini, Marco Chiesa, Andrea Scribante, Marco Colombo, Claudio Poggio   +4 more
doaj   +1 more source

Estimation of the Yield Stress of Stainless Steel from the Vickers Hardness Taking Account of the Residual Stress

, 2013
In this paper, a method that uses the Vickers hardness to estimate the yield stress of a metallic material with taking account of residual stress is proposed.
O. Takakuwa, Yusuke Kawaragi, H. Soyama
semanticscholar   +1 more source

The Effect of Heat Treatment on Mechanical Properties of Cu-0.93 mass％Ni-0.24 mass％P Alloy [PDF]

, 2019
Cu-Ni-P alloys are the typical precipitation-hardening material. Thus, Cu-Ni-P alloys are expected to apply alternative materials for heat-exchanger tubes.
安藤 哲也, 河野 浩三, 稲垣 達
core   +1 more source

Additively Manufacturable High‐Strength Aluminum Alloys with Coarsening‐Resistant Microstructures Achieved via Rapid Solidification

Advanced Materials, EarlyView.
Rapid solidification in laser additive manufacturing facilitates the precipitation of metastable phases in aluminum alloys. These metastable phases significantly enhance the strength by forming a high‐volume fraction of precipitates with an order of magnitude reduced sizes and smaller interspacing, effectively impeding dislocation motion. Consequestly,
S. Mohadeseh Taheri‐Mousavi, Michael Xu, Florian Hengsbach, Clay Houser, Zhaoxuan Ge, Benjamin Glaser, Shaolou Wei, Mirko Schaper, James M. LeBeau, Greg B. Olson, A. John Hart   +10 more
wiley   +1 more source