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Article
Nano Ferrites as Corrosion Inhibitors for Carbon Steel in Local Iraqi Bentonite Mud

Authors: N.A. Al-Rubaiey --- F.S. Kadhim --- A.A. Ati
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2017 Volume: 35 Issue: 8 Part (A) Engineering Pages: 849-855
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Corrosion processes are accountable for serious losses in the oil industry. Although organic and inorganic materials and mixed materials inhibitors have been used for a long time to control or reduce corrosion. Using nano-materials as inhibitors has gained an increasing applications role because of their exceptional properties. Nano materials are good corrosion inhibitors because they possess many advantages such as high efficiency of inhibition, low cost, minimum toxicity and effortless production. This work examines the use of nano-materials as inhibitors to prevent corrosion of carbon steel in drilling mud. Anti-corrosion properties of zinc and nickel ferrite nano materials (ZnFe2O4, Zn0.6Ni0.4Fe2O4) have been investigated over carbon steel in local Iraqi bentonite mud as a source of the corrosion. It has been found that under the given conditions, ferrites act as efficient corrosion inhibitors of carbon steel.


Article
Design, Construction and Operation of a Multi-Stage Large-Bore CO2 Laser

Authors: D.N. Raouf --- N.A. Al-Rubaiey --- S.I. Abdul-Latif
Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2005 Volume: 1 Issue: 1 Pages: 25-29
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

In this work, a CO2 laser system of five discharge stages was designed, constructed and operated with longitudinal electrical discharge and axial gas flow. The system was characterized throughout measuring output laser power as function of output coupler reflectivity, length of discharge tube and cooling water temperature. The maximum output power delivered was 135W at the TEM10 mode.

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