Structure and Properties of Steels and Non-ferrous Metals
Development (fabrication& characterization) of new Cu nanostructured & nanoceramic-Cu .composites Heider Yasser Thamir; PhD student :Supervised by Dr. M. J. Kadhim Dr. A. SH. Jabur
SUMMARY & AIM OF RESEARCH During recent years, nanomaterials have received increasing attention in advanced technology due to their outstanding mechanical, physical& chemical properties compare with their corresponding bulk counterparts.
. These properties are affected by many parameters such as size, surface area, shape, chemical composition, morphology& structure. Therefore, detailed studies should be taken place to investigate new nanostructured materials. Because of their high electrical& thermal conductivity, copper& its alloys have
found widespread applications, such as resistance welding electrodes, high voltage switches, motor commutators, continuous casting moulds& others. The required properties of these products are the high mechanical properties& high electric& thermal conductivity. Also, its often required that properties remain stable
in different operating conditions,& often also that they are resistant to variant force, current& thermal loads. Some compromise in this regard can be achieved using precipitation hardened alloys. However, a serious drawback of these materials is instability of their mechanical properties& electric& thermal conductivity
at elevated& high temperature, resulting from temperature instability of their microstructure. Therefore, a rising trend to use new copper-based functional materials, such as materials dispersion-hardened, usually by the particles of oxides, carbides& others, obtained by powder metallurgy techniques..
Within this group of materials particular attention is being drawn to those of nanometric size copper matrix grains & ceramic particles :The aims of this study production & characterization of- 1 .nanosize copper powders study the effect of powder technology- 2
:parameters on a- powder technology nanograins copper .products b- the effect of nanosize ceramic powder.cu composites by powder technology Plan of research :The study includes production & characterization of- 1 .nanosize copper powders
study the ability of controlling the- 2 nanosize copper powders' properties like particle size, particle size distribution, shape, morphology, etc. through controlling the parameters of synthesis .method(s) fabrication & characterization of- 3 powder technology products based on
Writing a Summary Definition of a Summary "A summary is a condensed version of a larger reading. A summary is not a rewrite of the original piece . . . To write a summary, use your own words to express...
Contact's start page Personal information Phone Numbers Arbiter.Net presentation for Contacts How do I Sign In? What should I do first? Where can I get further help? How do I manage my schedules? How do I pay officials? Contact's start...
From Existing Camera: R. 2 =0.946 in R. 3 =2.25 in ... Proposed UML Diagram. State Pattern. Increases extendibility of the program by encapsulating different behaviors that a single class will exhibit into external "state" classes.
In the broadest sense, the first technology was the primitive modes of communication used by prehistoric people before the development of spoken language. Mime, gestures, grunts, and drawing of figures in the sand with a stick were methods used to...
Directions: Go to the "Identification of Insects online Dichotomous Key" website (previous slide) in order to identify all 6 insects found on your insect worksheet.Write the common name on the line next to the number & fill in the corresponding...
Ready to download the document? Go ahead and hit continue!