Results 31 to 40 of about 111,237 (217)

The Measurement of Surface Hardness of Mineral Trioxide Aggregate Material (MTA) using Two Techniques of Condensation. [PDF]

Al-Rafidain Dental Journal, 2008
Aims: This in vitro study was conducted to exam the effect of condensation technique on surface hardness of MTA. Materials and Methods: In this study, 20 acrylic blocks were used.
Maha A. AlMurad
doaj   +1 more source

Chemical analysis and Vickers hardness of orthodontic mini-implants

Brazilian Journal of Oral Sciences, 2015
Orthodontic mini-implants are used in clinical practice to provide efficient and aesthetically-pleasing anchorage. Aim: To evaluate the hardness (Vickers hardness) and chemical composition of miniimplant titanium alloys from five commercial brands ...
Christiane Cavalcante Feitoza, Guilherme José Pimentel Lopes de Oliveira, Rafael Leonardo Xediek Consani, Eloisa Marcantonio Boeck, Karina Eiras Dela Coleta Pizzol, Nadia Lunardi   +5 more
doaj   +1 more source

Microstructure Characteristics in the Interface Zone of Gray Cast Iron Solid State Bonds [PDF]

Engineering and Technology Journal, 2014
In the present study, gray cast iron was diffusion bonded under air atmosphere and in inert environment (argon). In air it was carried out at the temperatures of 700, 750, 800, 850, and 900 °C under UN pressing load of 1 and 2 ton for 15, 30 and 60min ...
Awfa Abdul-Rassol Abdullah, Rasha Rahman Rawhdan   +1 more
doaj   +1 more source

Surface Roughness Effect on Microhardness Measurements

Tribology in Industry
Micro-Vickers hardness measurements are essential for evaluating micro-scale material hardness, providing insights into surface properties and material strength. However, many factors can influence the precision of hardness measurements.
Raimonds Sirants, Janis Lungevics
doaj   +1 more source

Selective laser melting of WC-Co reinforced AISI 1045 steel composites: microstructure characterization and mechanical properties

Journal of Materials Research and Technology, 2022
Due to the limited wear resistance, AISI 1045 steel has limited applications in harsh environments, and the friction effect leads to premature scrapping.
Shifeng Liu, Yunzhe Li, Yan Wang, Yingkang Wei, Liangliang Zhang, Jianyong Wang, Xin Yang   +6 more
doaj  

Assessment of Micro-Hardness, Degree of Conversion, and Flexural Strength for Single-Shade Universal Resin Composites

Polymers, 2022
Single-shade universal resin composites (SsURC) are preferred in clinical practice to reduce time for shade selection and obtain good esthetic results. In this study, the static mechanical properties of seven new SsURCs were investigated, their spectral ...
P. Yılmaz Atalı, B. Doğu Kaya, Aybike Manav Özen, B. Tarçın, Ayşe Aslı Şenol, Ezgi Tüter Bayraktar, B. Korkut, Gülçin Bilgin Göçmen, D. Tağtekin, C. Türkmen   +9 more
semanticscholar   +1 more source

Mechanical Assessment of CAD/CAM Fabricated Hybrid Ceramics: An In Vitro Study

Applied Sciences
The current study aimed to compare the mechanical properties of CAD/CAM fabricated hybrid ceramic restorative materials. The current study assessed the mechanical properties of additively and subtractively manufactured CAD/CAM fabricated hybrid ceramic ...
Khalid K. Alanazi, Abdulaziz A. Alzaid, Ali A. Elkaffas, Sarah A. Bukhari, Ramzi O. Althubaitiy, Khalid A. Alfaifi, Ibrahim M. Alfahdi, Hussain A. Alqahtani   +7 more
doaj   +1 more source

Influence of pre-deformation on the precipitation of Cu-rich clusters in RPV model steel

MATEC Web of Conferences, 2018
The effect of pre-deformation on the precipitation process of Cu-rich clusters in reactor pressure vessels (RPV) model steel is studied. In this research, Fe-1.16wt%Cu binary alloy is selected as RPV model steel to simulate the precipitation process of ...
Tan Zhaozhao, Li Chengliang, Shu Guogang, Liu Wei, Li Qiulin   +4 more
doaj   +1 more source

Flexural Properties, Impact Strength, and Hardness of Nanodiamond-Modified PMMA Denture Base Resin

International Journal of Biomaterials, 2022
Purpose Investigate the effect of low nanodiamond (ND) addition and autoclave polymerization on the flexural strength, impact strength, and hardness of polymethylmethacrylate (PMMA) denture base.
Shaimaa M. Fouda, M. Gad, Passent Ellakany, Maram A. Al Ghamdi, S. Khan, S. Akhtar, Mohamed S Ali, F. Al-Harbi   +7 more
semanticscholar   +1 more source

Microstructure and corrosion properties of SiC/Al-Mg-Cu-Si-Sn composites

Science and Engineering of Composite Materials, 2017
The SiC/Al-Mg-Cu-Si-Sn composites with different quantities of SiC particles by volume were fabricated using hot-pressing sintering. The effects of SiC volume fraction on the microstructure, Vickers hardness, and corrosion behavior of the composites were
Shen Rujuan, Zhou Pengfei, Xiao Daihong, Song Min   +3 more
doaj   +1 more source