This research aims to study the effect of adding alloying elements and heat treatment
of Zinc metal on solar energy absorbing , nine alloys ingots were manufactured by
changing the percentages of added Aluminum and Copper on the pure Zinc, and thes
e
ratios of Aluminum were : (10% , 20% , 30% , 40 % , 50%) to demonstrate the effect of
adding Aluminum to Zinc metal on solar energy absorbing , and ratios of copper were :
(20% , 40%) , as well as we prepare two pure zinc samples with 99.2% of purity , one
was rapidly cooled and the other slowly cooled , to demonstrate the effect of heat treatment
on solar energy absorbing .
In order to measure the solar energy absorbing for prepared samples , we
manufactured a device depends on the methods of heat exchange between solar radiation
and the surface exposed to radiation .
The obtained results showed that adding Aluminum and Copper to the pure Zinc
caused a decrease in solar energy absorbing .
As well as increasing the percentages of adding Aluminum and Copper to the pure
Zinc caused a gradually decrease in solar energy absorbing .
comparing the absorbing of pure zinc samples, one was rapidly cooled and the other
slowly cooled , the results showed that the sample was rapidly cooled was better than the
sample slowly cooled on solar energy absorbing .
In this research, specimens of aluminum alloy 6061 were
received, and chemical composition was investigated. After
that solution heat treatment was applied on it at 530°C, a
section of these specimens was quenched in water and anther
quenched in
oil, and two sections were aged at 160°C for
times (1,3,5 h), and thus obtained six samples differ in
condition of heat treatment in addition to as received
specimen.
In this research we are Studying the improvement of the thermal
conductivity of The 6063 aluminum alloys by Alloy elements
Adding such as (Boron & Titanium) .
In this Study we used (6063) aluminum alloy as a base metal
because it using of the fab
rication of Central Processing Unit(CPU)
heat sinks . First, we brought casting mold. We melted Aluminum
after weighting it ,and we adding Alloy elements (Boron &
Titanium), we selected the temperatures of the furnace at 1000 ℃
,for period 60 minute.
In This research a surface hardening process by Ni coating and
subsequent diffusion heat treatments was studied at Al7075 alloy.
Nickel coatings with different thickness were obtained.
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 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.
Aluminum alloys have got extreme industrial importance since 19th century
until now. They enter into several light and heavy industries. aluminum is
hardened by impurity due to industrial application. In this study, aluminumcupper
alloys (with 0.5
% Mg) were prepared, where cupper amount was added
to aluminum in different percentages (2.5%,4%,4.5%) ,no overtaking degree of
saturation 6% of the weight of cupper. After adding definite percentage of
cupper to aluminum, the compounds are fusioned for complete blending, where
cupper atoms diffuse into aluminum. Samples are infusioned by definite
methods and circumstances. The prepared alloys were thermally treated during
8-30 hours for hardening. In this research we will concentrate on the influence
of cupper content on hardening of aluminum and other basic conditions, which
are needed to obtain higher hardness for aluminum alloys.
