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Register a new userBrazing of Tantalum with AISI 304 Using Copper Base Filler
لحام المونة لمعدن التانتاليوم بالفولاذ الذي لا يصدأ من النوع (304L AISI) باستخدام سبائك أساسها النحاس
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Damascus University ورقة بحثية
Publication date
2007
fields
Mechanical Engineering
and research's language is
العربية
Created by
Shamra Editor
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يهدف البحث إلى دراسة إمكانية لحام الفولاذ الذي لا يصدأ من النـوع (304L) ذي البنيـة الاوستينيتية و التنتاليوم النقي (Ta%9.99) بطريقة المونة باستخدام سبائك غير فعالة ذات أساس نحاس في وسط من الغاز الخامل.
The aim of this research is to study the ability of brazing austenitic stainless steel AISI 304L to pure tantalum (99.9%Ta) by using copper base nonactive filler under inert gas protection.
References used
(K. Hale, “Brazing – A cost Effective Method”, Welding and Metal Fabrication, Vol. 58, No. 4 , (1990
(H. D. Solomon , “The High – Temperature Wetting Balance and the Influence of Grit Blasting on Brazing”, Welding Journal, Vol. 82, No.10, (2003
(X. Huang, “Activated Diffusion Brazing Technology for Manufacture of Titanium Honeycomb Structures”, Welding Journal, Vol. 85, No. 5, (2004
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In this research we have synthesized a new macrocyclic Schiff base
containing N2O5 donor atomes which was prepared by reaction of 1,7- bis (6-
methoxy - 2 - formyl phenyl)-1,4,7,10,13-penta oxa tridecane with 4',4- oxy
dianiline.
The changes in coefficient of distribution of lead and cupper has been studied in
system with two phases, liquid water contaminated with lead and copper-solid (natural
Phosphate of Syria) correlation of the following factors: Time of mixing phases,
size of the
developed steel ,change the values of PH ,concentration of elemental lead and
concentration of element capper ,the concentration of calcium as a competitor to the
occupation of sites available on the solid phase, the ratio V\m presents the water phase size
on the mass of phase ,the Percentage removal of lead from aqueous samples prepared in
the laboratory91,57-99,95% were the best conditions for a vast proportion removed can be
summarized as follows:
PH=[6,63-10,11], Time of mixing phases =60 minutes and V/m=1000.
The Percentage removal of copper from aqueous samples prepared in the
laboratory 95,27 -99,96 % were the best conditions for a vast proportion removed can be
summarized as follows:
PH= [7,89-11,01] , Time of mixing phases =60 minutes and V/m=1000.
Ideal conditions have been applied that were obtained according to laboratory tests
on water samples from industrial input to Banias refinery and water samples from
industrial drainage to Syrian company for oil transport after Removal for lead was(
100%,99 %). Removal for copper was( 100%,98 %) .
This paper discuss the Laser induced breakdown
spectroscopy (LIBS) by using Nd:YAG which is a high energy
pulsed Laser . The laser radiation is focused on solid targets which
are samples of red Copper (99.5%). Most important Plasma
parameters which are electron temperature and density was
measured.
Design of experiments (DOE)
had been used in the study, and the results had been evaluated by the
surface response method. The results showed that the welding
current is the main parameter by its effect on the mechanical studied
properties and the parameters values which give the best responses
had been determined.
In this research the development of the conditions of the determine copper duo by spectrophotometric method that based on the formation of a complex with Alizarin Red S was accamplished with the presence of fallow acid when the wavelength(220 nm), th
at by studying the effect of PH and the impact if the interference caused by the presence of some metal ions (nickel ions, chromiun ions, 2 inc ions, calciom ions, and triple iron ions) which make it difficult for the progress of determine copper by Alizarin Red S. the best PH value for this process is (pH = 9.5) and the relationship of Lambert Bear realized within the range 0.2 – 125 mg/ml the detection limit was 0.OO1µg/ml.
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