نتایج جستجو برای: titanium alumindes

تعداد نتایج: 36249  

Journal: :international journal of nanoscience and nanotechnology 2012
f. abbasi nargesi r. azari khosroshahi azari khosroshahi n. parvini ahmadi

in this research, the high-energy planetary mill was employed to produce nanocrystalline ti-50al(γ)(at%) powders. initial powders were mechanically alloyed in 99.9999% and 90% purities of argon and also air atmosphere with alloying times up to 50h. the effect of impurity of argon atmosphere on the microstructure and the rate of phase transformation of ti-50al were investigated during mechanical...

F. Abbasi Nargesi N. Parvini Ahmadi R. Azari Khosroshahi Azari Khosroshahi

In this research, the high-energy planetary mill was employed to produce nanocrystalline Ti-50Al(γ)(at%) powders. Initial powders were mechanically alloyed in 99.9999% and 90% purities of Argon and also Air atmosphere with alloying times up to 50h. The effect of impurity of Argon atmosphere on the microstructure and the rate of phase transformation of Ti-50Al were investigated during mechanical...

Journal: :نشریه دانشکده فنی 0
خطیب الاسلام صدر نژاد اسدالله حراتی

low carbon steel samples were both shot into and inoculated with titanium in order to improve mechanical properties such as strength and toughness. sem observations and x-ray analyses revealed that titanium nitride and titanium carbonitride precipitates being scattered in the ferrite substrate reduce the grain size in all as-cast, heat-treated and as-rolled cases. the growth of the grains at hi...

Journal: :بینا 0
محمد اسحاقی m eshaghi تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم حسین سالور h salour تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم محمد ابریشمی m abrishami تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم عباس باقری a bagheri تهران- پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم مریم آل طه m al-taha

purpose: to compare the complications of pegging between the polycarbonate peg system and the titanium peg system. method: complications associated with pegging (polycarbonate: bio-eye or titanium: dr-perry new p-k) were reviewed from the hospital records of 153 patients over 5 years. results: out of 153 cases, 96 (62.3%) were male and 57 (37.7%) were female. mean age was 27.7 yr (6-59 yr). in ...

2002
Z. M. Yan T. W. Guo Y. M. Zhang Z. C. Li

Titanium is an ideal material for use in prosthodontics because of its biocompatibility, corrosion resistance, and mechanical strength combined with its lightweight. Recently the use of titanium and titanium alloys for fixed restorations has increased substantially, mainly due to the improvement of techniques for the casting titanium and its alloys. This article reviewed the studies on titanium...

Sabokrouh , M. ,

In this article the effects of carburizing heat treatment on girth weld with containing titanium oxide and titanium carbide nanoparticles (X-65 grade of gas pipeline) is evaluated. The charpy results show that in the carburized sample containing titanium oxide and titanium carbide nanoparticles compared to the no heat treatment sample (containing titanium carbide and titanium carbide nanopartic...

Journal: :iranian journal of basic medical sciences 0
mohaddeseh behjati cardiovascular research center, isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, iran heart failure research center, isfahan cardiovascular research institute, isfahan, isfahan university of medical sciences, isfahan, iran iman moradi nanotechnology consultancy and development center (ncdc), padova, italy mohammad kazemi department of genetics, isfahan university of medical sciences, isfahan, iran

objective(s):anodized treated titanium surfaces, have been proposed as potential surfaces with better cell attachment capacities. we have investigated the adhesion and proliferation properties of h9c2 cardiac myoblasts on anodized treated titanium surface.  materials and methods: surface topography and anodized tubules were examined by high-resolution scanning electron microscopy (sem). control...

Journal: :iranian journal of pharmacology and therapeutics 0
h. ahmadvand m. ani a. a. moshtaghie

titanium salts are widely used in pharmacy and industry as intensely white permanent pigment with good covering power in paints , paper , toothpaste , plastics and food dye s. this ion is a redox-active transition metal and may cause oxidative damages to lipids, proteins and dna molecules. in spite of abundant literature, questions about the side effects of titanium ions still remain to be answ...

Sabokrouh , M. ,

In this article the effects of carburizing heat treatment on girth weld with containing titanium oxide and titanium carbide nanoparticles (X-65 grade of gas pipeline) is evaluated. The charpy results show that in the carburized sample containing titanium oxide and titanium carbide nanoparticles compared to the no heat treatment sample (containing titanium carbide and titanium carbide nanopartic...

Journal: :Journal of biomedical materials research. Part B, Applied biomaterials 2008
Shinji Takemoto Masayuki Hattori Masao Yoshinari Eiji Kawada Yutaka Oda

Although fluoride induces corrosion in titanium in an oral environment, the influence of protein on this corrosion remains to be clarified. The objective of this study was to investigate suppression of fluoride-induced corrosion of titanium where albumin was either present in a solution or where albumin was preadsorbed on titanium. Titanium dissolution in titanium specimens and surface characte...

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