Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userAn-Invitro Study to Some Mechanical Properties of Cobalt-Chrome Alloys in Sodium hypochlorite and distilled water
دراسة مخبرية لبعض الخواص الميكانيكية لخلائط الكروم كوبالت في هيبوكلوريت الصوديوم و الماء المقطر
2371
1 34
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
يهدف البحث الحالي إلى دراسة تأثير المطهرات الكيميائية على خشونة و قساوة السطح لخليطة الكوبالت كروم، حيث تم استخدام محلول هيبوكلوريت الصوديوم بتركيز % 5.25 كمحلول مطهر، و الماء المقطر (العينة الشاهدة)، حيث تم تصنيع 20 هيكلا معدنياً من خليطة الكوبالت كروم، كل مجموعة تحتوي على 10 عينات و تم غمر العينات بالمحاليل المطهرة، ثم تم قياس خشونة السطح باستخدام مجهر القوة الذرية، و قياس قساوة السطح باستخدام جهاز فيكرز لقياس القساوة.
The current research aims to study the effect of chemical disinfectants on the roughness and hardness of the surface of the cobalt chrome alloy, where the use of cleansing Sodium hypochlorite 5.25% and distilled water (the control sample), Been manufacturing 20 structure metal of the alloy cobalt chrome, each group containing 10 samples and was doused with samples intravenously cleared, then it was measured surface roughness using an Atomic force microscope, and measuring the hardness of the surface using a Vickers measuring device hardness.
References used
Abuzar MA, Bellur S, Duong N, Kim BB, Lu P, Palfreyman N, et al. Evaluating surface roughness of a polyamide denture base material in comparison with poly (methyl methacrylate). J Oral Sci 2010;52(4):577–81
Anusavice KJ, Phillips RW, Shen C and Rawls HR. Phillips science of dental materials .(12th ed.). St.Louis,Mo.,Elsevier(2013).50- 71,368-411
Anusavice KJ: Phillips: Science of Dental Materials. 10th ed, Philadelphia, WB Saunders, 1996; p347-359, 423-459
rate research
Read More
In this research study the effect of adding thermal cement as a filler on the properties
of natural rubber STR20, through the preparation of natural rubber mixtures containing
different ratios of thermal cement (0,5,10,15,20 pphr) on the rolling ru
bber machine, then
characterization physico-mechanical properties and chemical of mixtures that prepared
and then tested to measure the tensile strength, resistance friction and determine the
hardness and swelling values in different solvents.
The results showed increased tensile strength with increased thermal cement ratio
until
15( pphr) but after this percentage take tensile strength to decline gradually, where
the relationship becomes counterproductive between the additives and the resistance ratio,
as noted the low percentage of elongation at break gradually with increasing the proportion
of thermal cement, as for the hardness values it has increased in extrusive with increase
the proportion of thermal cement in mixtures, also observed a decrease in friction
resistance with increase the additives proportion even (15 pphr) to rise after that.
Results of the study also showed that the samples swelling in mineral oil was lower
compared to all of the gasoline and diesel, the swelling was in the mineral oil 1.29%, while
in gasoline was 14.15% and in diesel was 12.43%.
In this research, has been studied the spread of chromium atoms mechanism, and mechanical and chemical and properties of the diffusion chrome coating layer in low carbon steel, which is considered one of the surface treatment techniques. Where many p
ractical experiences were carried out in the powdery saturation milieu to form a diffusion coating layer containing atomic chromium who will spread inside the painted
surface, and has studied some mechanical and chemical properties after doing diffusion chrome coating.
The tests results showed that the tensile strength and micro hardness and chemical corrosion resistance improved after the diffusion chrome coating, also increased the depth of coating layer By increasing the retention time in the oven and temperature, where this relationship is reflected with curve of the second degree. Conversely ductility decreased.
Search results confirm the possibility of using diffusion chrome coating as a promising treatment in raising the efficiency of machinery elements that prone to oxidation or chemical corrosion in different temperatures.
The effect of artificial aging on the revolution of mechanical
properties of aluminum alloy 6063-T5 has been studied. Samples of
aluminum profiles which are formed by extrusion process have
chosen, then studied the effect of artificial aging on th
e hardness
and mechanical properties by applied two aging stages and many
stages comparing to the traditional way which be done in one stage.
The hydrodynamic activation of NaOCL plays an important role in increasing
its disinfectant efficacy.
The aim of this study was to evaluate the efficacy of a 5.25% sodium hypochlorite Activated by
EndoActivator device in reducing the bacterial load in the infected root canal.
foamed concrete is a concrete made by cement slurry mixed with foaming agent, so
that foamed concrete is lighter than conventional concrete. The objectives of this study is
to produce this kind of concrete, and to study some of its physical and mec
hanical
properties. Mix design of concrete was made for four required densities (1000,
1300,1600,1900 kg/m3), cement content of 350 kg/ m3, and water to cement ratio equal to
0.5. Different tests were performed to determine some properties of product concrete such
as density, compressive strength and splitting tensile strength. The results demonstrated the
possibility of production foamed concrete with wide range of density and strength. The
oven dry density of foamed concrete was in the range of (870-1773 kg/m3) , compressive
strength was in the range of (2.95-16.2 Mpa ), and the splitting strength was in the range
of (0.32-1.76Mpa).
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
