نتایج جستجو برای: alloys

تعداد نتایج: 44198  

2014
Nan Zhao Nevija Watson Zhigang Xu Yongjun Chen Jenora Waterman Jagannathan Sankar Donghui Zhu

Magnesium (Mg) based alloys are the most advanced cardiovascular stent materials. This new generation of stent scaffold is currently under clinical evaluation with encouraging outcomes. All these Mg alloys contain a certain amount of rare earth (RE) elements though the exact composition is not yet disclosed. RE alloying can usually enhance the mechanical strength of different metal alloys but t...

2014
Youssef S. Al Jabbari

Cobalt-Chromium (Co-Cr) alloys are classified as predominantly base-metal alloys and are widely known for their biomedical applications in the orthopedic and dental fields. In dentistry, Co-Cr alloys are commonly used for the fabrication of metallic frameworks of removable partial dentures and recently have been used as metallic substructures for the fabrication of porcelain-fused-to-metal rest...

2016
H. F. Li K. J. Qiu F. Y. Zhou L. Li Y. F. Zheng

In the case of medical implants, foreign materials are preferential sites for bacterial adhesion and microbial contamination, which can lead to the development of prosthetic infections. Commercially biomedical TiNi shape memory alloys are the most commonly used materials for permanent implants in contact with bone and dental, and the prevention of infections of TiNi biomedical shape memory allo...

2017
Shengfeng Guo Ruoyu Liu Xianquan Jiang Hongju Zhang Dingfei Zhang Jingfeng Wang Fusheng Pan

Knowledge of statistical characteristics of mechanical properties is very important for the practical application of structural materials. Unfortunately, the scatter characteristics of magnesium alloys for mechanical performance remain poorly understood until now. In this study, the mechanical reliability of magnesium alloys is systematically estimated using Weibull statistical analysis. Intere...

1999
X. H. Lina W. L. Johnson W M. Keck

Formation of bulk metallic glass in quaternary Ti-Zr-Cu-Ni alloys by relatively slow cooling from the melt is reported. Thick strips of metallic glass were obtained by the method of metal mold casting. The glass forming ability of the quaternary alloys exceeds that of binary or ternary alloys containing the same elements due to the complexity of the system. The best glass forming alloys such as...

Journal: :Journal of dental research 1961
K ASGAR F A PEYTON

The casting of cobalt-base alloys in dentistry is comparatively new in relation to the casting of gold alloys and other restorative procedures. It has been less than thirty years since these alloys were introduced to dentistry, but each year they have become more popular. A survey of the choice of dental alloys for removable partial dentures conducted by Lane' in 1949 showed that five times as ...

ژورنال: مجله دندانپزشکی 2004
لوّاف, شیرین, منزوی, عباس,

Statement of Problem: Nowadays economical issues on high gold alloys have changed the practice of metal-ceramic restorations toward base-metal alloys. Minalux is one of the base-metal alloys produced in Iran. Marginal fitness is of high importance to be evaluated in dental alloys.Purpose: The aim of the present study was to compare the marginal adaptation of two base-metal alloys, Minalux (Mava...

2008
Gregory Henshall Ranjit S. Pandher Keith Howell Stephen Tisdale

Recently, the industry has seen an increase in the number of Pb-free solder alloy choices beyond the common neareutectic Sn-Ag-Cu (SAC) alloys. New wave solder alloys have been developed with the intent of addressing concerns with copper dissolution, barrel fill, wave solder defects, and the high cost of alloys containing significant amounts of silver. Concerns regarding the poor drop/shock per...

2016
Mitsuo Niinomi Yi Liu Masaki Nakai Huihong Liu Hua Li

Biomedical titanium alloys with Young's moduli close to that of cortical bone, i.e., low Young's modulus titanium alloys, are receiving extensive attentions because of their potential in preventing stress shielding, which usually leads to bone resorption and poor bone remodeling, when implants made of their alloys are used. They are generally β-type titanium alloys composed of non-toxic and all...

Journal: :Dental materials journal 2002
Masatoshi Takahashi Masafumi Kikuchi Yukyo Takada Osamu Okuno

In this study, experimental Ti-Ag alloys (5, 10, and 20 mass% Ag) and Ti-Cu alloys (2, 5, and 10 mass% Cu) were made in an argon-arc melting furnace. The alloys were cast into magnesia molds using an argon gas-pressure dental casting machine, and the mechanical properties and microstructures of the castings were investigated. As the concentration of silver or copper in the alloys increased, the...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید