نتایج جستجو برای: Co-Cr-Mo alloy

تعداد نتایج: 447188  

Journal: :iranian journal of pharmaceutical sciences 0
abdolreza simchi department of material science and engineering, institute for nanoscience and nanotechnology, sharif university of technology, tehran, iran, mahdi dourandish department of material science and engineering, dirk godlinski fraunhofer institute for manufacturing technology and applied materials research ifam, wiener, germany

the fabrication of complex-shaped parts out of (wt %) co-28cr-6mo alloy by three-dimensional printing (3dp) was studied using two grades of the alloy with average particle sizes of 20 and 75 μm. to produce sound specimens, 3dp processing parameters were tuned. the sintering behavior of the powders was characterized by the dilatometric analysis. batch sintering in argon atmosphere at 1280 °c for...

Short life of current total hip replacement metallic implants is generally dependent on the aseptic loosening of the implant, which occurs due to mismatch of elastic modulus between bone and metallic implant materials. Decreasing in elasticmodulus of implant could be successful. Forsterite is biocompatible and bioactive ceramic which has suitable mechanical properties. In presented research the...

Journal: :dental research journal 0
mohammadhossein fathi mehdi ahmadian mojgan bahrami

background: dental cobalt base alloys are biocompatible dental materials and have been widely used in dentistry. however, metals are bioinert and may not present bioactivity in human body. bioactivity is the especial ability to interact with human body and make a bonding to soft and hard tissues. the aim of the present research was fabrication and bioactivity evaluation of novel cobalt alloy/ f...

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-...

2009
Adriana Cláudia Lapria Faria Renata Cristina Silveira Rodrigues Rossana Pereira de Almeida Antunes Maria da Gloria Chiarello de Mattos Adalberto Luiz Rosa Ricardo Faria Ribeiro

UNLABELLED Cell culture system has been used to evaluate alloy cytotoxicity under different environments, testing the extracts, but the effect of temperature variation on the cytotoxicity of dental alloys has not been analyzed. OBJECTIVE The aim of the present study was to investigate if temperature variation could affect dental alloy cytotoxicity, testing alloy extracts in an epithelial cell...

2017
J. Loch

The work presents the results of the studies of Co-Cr-Mo casting alloys used in the production of frame casts of removable dentures, crowns and bridges in dental prosthetics. The studies were performed on four Co-Cr-Mo alloys of different contents of Mo, W and other additives. Electrochemical tests were performed, which aimed at examining the corrosion resistance of the alloys and observing the...

2015

The presented paper studies the effect of the casting technology on the corrosion resistance of Co-Cr-Mo alloy. The investigations were conducted on a commercial alloy with the brand name ARGELOY N.P SPECIAL (Co-Cr-Mo) produced by Argen as well as the same alloy melted and cast by the lost wax casting method performed by a dental technician. The corrosion behavior of the dental alloys in an art...

Journal: :Brazilian dental journal 2012
Rodrigo Galo Ricardo Faria Ribeiro Renata Cristina Silveira Rodrigues Luís Augusto Rocha Maria da Glória Chiarello de Mattos

The aim of this study was to determine the effect of the oral environment on the corrosion of dental alloys with different compositions, using electrochemical methods. The corrosion rates were obtained from the current-potential curves and electrochemical impedance spectroscopy (EIS). The effect of artificial saliva on the corrosion of dental alloys was dependent on alloy composition. Dissoluti...

Journal: :Brazilian dental journal 2005
Adriana da Fonte Porto Carreiro Ricardo Faria Ribeiro Maria da Gloria Chiarello de Mattos Renata Cristina Silveira Rodrigues

The purpose of this study was to compare the castability of Co-Cr-Mo-W (Remanium 2000), Ni-Cr (Durabond) and Co-Cr-Mo (Vera PDI) alloys invested with either conventional (phosphate- and silica-based) or mixed investing techniques. A 10 X 10 mm square-shaped nylon net containing 100 open squares served as a template for construction of wax patterns, which were invested with phosphate-based inves...

2008
Sang-Hak Lee Naoyuki Nomura Akihiko Chiba

An improvement in the mechanical properties of a biomedical Ni-free Co-Cr-Mo alloy under as-cast condition has been examined by means of tensile tests and microstructure observations. The solubility of N in Co-Cr-Mo alloys increases with increasing Cr content from 29 to 34mass%. This results in a significant improvement in mechanical properties such as yield stress, tensile strength, and fractu...

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