تم تحضير مسحوق تيتانات الباريوم BaTiO3 انطلاقاً من كربونات الباريوم BaCO3 و ثنائي أوكسيد التيتانيوم TiO2 بطريقة تفاعل الحالة الصلبة.
قدم في هذا البحث طريقتان لتحديد درجة تفاعل مكونان تيتانات الباريوم الموافقة للجزء الأعظمي المتفاعل، حيث تعتمد الطريقة الأولى على المشتق الأول والثنائي التقليديين، والطريقة الثنائية على نمذجة القيم التجريبية مابين قيم الجزء المتفاعل (Fraction Reacted) وقيم درجات الحرارة المطبقة، تم التوصل إلى علاقة رياضية مناسبة باستخدام برنامج SPSS الاحصائي، وإجراء المشتقين الأول والثنائي، والرسومات البيانية المتعلقة بها.
Barium titanate powder was prepared from barium carbonate and titanium dioxide using the solid state reaction method.. In this research, two methods have been demonstarted to determine the fraction reacted temperature of barium titanate components, where the first method depends on the traditional first -and second derivatives, while the second method has been based on modeling the experimental data of reacted fraction with temperature, then a mathematical relationship has been presented using statistic SPSS program. After that, the first -and second derivatives have been taken of this relation with graphs related to it.
In this work, the processing of aluminum alloys - copper, which
added amounts of copper to aluminum in different parentages (2.5-
4-4.5%) so as not to exceed the limit of saturation Aluminum 6 %(
copper).
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
In line quenching and tempering has allowed ASCO (Arabian Steel Company) to
have higher ductility bar at higher strength levels compared with classic rebar production
with substantial reduction in alloy consumption by using heat treatment (thermex)
As a result of the development of the use of reinforced Composites with fibers in
practical applications continuously, research aims to study the effect of proportion piroxide
additives to unsaturated polyester resin on the tensile properties of th
A new group of Z n - Al alloys suitable for casting was developed in the late sixties, These alloys are
ZA - 8 , ZA - 12 and ZA – 27, where the numbers represent the approximate percentage of aluminum in the alloy. These alloys compete with cast iro