The Influence of Seed Priming and Supplementary Irrigation on Improving the Tolerance of some Faba Bean Varieties to Water sterss (Drought)

A field experiment was carried out at Abi Jarash farm at the Faculty of Agriculture at Damascus University during the 2011-2012 agricultural season in order to study the effect of seed hardening and supplementary irrigation in improving the tolerance of faba bean (vicia faba L.) varieties to water stress.

Surface hardening of 7075 aluminum alloy by electroplating of nickel followed by diffusion treatments

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.

Nitriding Double Composite Martensitic- Austenitic Alloy Steel

The thickness of the diffusion layers was studied, along with the phases and the microstructure and composition, across the depth in diffusion zone. The obtained results proved the effect of nitriding system in the growth of the diffusion layers on surface of double composite martensitic - austenitic alloy steel. Analysis of mechanical and tribological characteristics of treated double composite steel under dry friction was also studied. It was found that diffusion treatment had a significant influence on work capacity of tested alloy. Stability of alloy after nitriding was (2.5-4) times higher in magnitude compared to untreated alloy.

Hardening of Aluminum

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.