نتایج جستجو برای: ptfeco alloy

تعداد نتایج: 52245  

2016
Pavel Doležal Josef Zapletal Stanislava Fintová Zuzanka Trojanová Miroslav Greger Pavla Roupcová Tomáš Podrábský

New Mg-3Zn-2Ca magnesium alloy was prepared using different processing techniques: gravity casting as well as squeeze casting in liquid and semisolid states. Materials were further thermally treated; thermal treatment of the gravity cast alloy was additionally combined with the equal channel angular pressing (ECAP). Alloy processed by the squeeze casting in liquid as well as in semisolid state ...

2014
Tatjana Puskar Danimir Jevremovic Robert J. Williams Dominic Eggbeer Djordje Vukelic Igor Budak

Dental alloys for direct metal laser sintering (DMLS) are available on the market today, but there is little scientific evidence reported on their characteristics. One of them is the release of ions, as an indicator of the corrosion characteristics of a dental alloy. Within this research, the difference in the elution of metals from DMLS and cast (CM) samples of Co-Cr-Mo dental alloy in saliva-...

Journal: :Brazilian dental journal 2003
Heloisa Módena Ferreira da Costa Renata Cristina Silveira Rodrigues Maria da Glória Chiarello de Mattos Ricardo Faria Ribeiro

Several formulations of alternative alloys have been proposed for the substitution of gold-based alloys used in Dentistry. Recently, a Ni-Cr-Ti-based alloy has been introduced. The purpose of this work was to verify the marginal adaptation obtained with one-piece superstructures for implant-supported prostheses obtained in Ni-Cr-Ti alloy, compared to a semi-noble alloy Pd-Ag. Eight superstructu...

2014
Yulin Liu Ming Liu Lei Luo Jijie Wang Chunzhong Liu

In AA2618 aluminum alloy, the iron- and nickel-rich intermetallics formed during solidification are of great effect on the mechanical properties of the alloy at both room temperature and elevated temperatures. However, the solidification behavior of the alloy and the formation mechanism of the intermetallics during solidification of the alloy are not clear. This research fills the gap and contr...

Journal: :The Chinese journal of dental research : the official journal of the Scientific Section of the Chinese Stomatological Association 2012
Chang Yuan Zhang Hui Cheng Dong Hong Lin Ming Zheng Mutlu Ozcan Wei Zhao Hao Yu

OBJECTIVE To evaluate the effects of recasting on the biocompatibility of a commercially available Ni-Cr alloy. METHODS The alloy tested was cast and subsequently recast four more times. For each cast condition, 24 disk shaped specimens were fabricated (5 mm in diameter, 0.5 mm in thickness). All the recasting was performed without adding new alloy. After the first cast and following each rec...

Journal: :Physical chemistry chemical physics : PCCP 2014
Anne Neumeister Jurij Jakobi Christoph Rehbock Janine Moysig Stephan Barcikowski

Chemical syntheses of homogenous solid solution alloy nanoparticles of noble metals require high temperature above 100 °C. Beside this, aqueous co-reduction methods lead to phase separation. In contrast, pulsed laser ablation in liquid (PLAL) allows synthesis of alloy nanoparticles with totally homogeneous ultrastructure in aqueous media at room temperature without reducing agents or organic li...

Journal: :Dental materials journal 2006
Setsuo Saitoh Yoshima Araki Masayuki Taira

Commercial Ag-based alloy (46Ag-20Pd-12Au-20Cu alloy) is widely used in Japan as a casting alloy. As opposed to the commercial composition, we prepared five experimental Ag-based alloys with reduced Pd content of 10 or 12%, increased Au content of 20 to 30%, and reduced Cu content of 12 to 20%. We then evaluated their sulfuration resistance by analyzing cast specimen surfaces dipped in 0.1% Na2...

2017
Xiaohao Sun Weiwei Zhou Keiko Kikuchi Naoyuki Nomura Akira Kawasaki Hisashi Doi Yusuke Tsutsumi Takao Hanawa

A low magnetic Zr-1Mo alloy was fabricated by a powder bed fusion (PBF) process using a fiber laser. The microstructure, surface morphology, and pore distribution of the as-built Zr-1Mo alloy were observed. Its magnetic susceptibility and Vickers hardness were evaluated by magnetic susceptibility balance and a microindentation tester, respectively. The as-built Zr-1Mo alloy mainly consisted of ...

2017
Chun-Huei Tsau Wei-Li Wang

This study investigates the effects of niobium and molybdenum on FeCoNi alloy, including on the microstructures and hardness of FeCoNiNb0.5Mo0.5 and FeCoNiNb alloys, and the polarization behaviors of these alloys in 1 M sulfuric acid and 1 M sodium chloride solutions. The results in this study indicate that both FeCoNiNb0.5Mo0.5 and FeCoNiNb alloys had a dual-phased dendritic microstructure; al...

2014
A. E. Mahmoud M. G. Mahfouz

The influence of zirconium on the grain refinement of Al 6063 alloy has been experimentally investigated. The microstructure and macrostructure of the refined alloy were investigated. The experimental results reveal that, the coarse dendrites in the microstructure of the alloy are effectively refined with the addition of zirconium to the melt prior to solidification. Grains of Al 6063 alloy can...

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