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Aluminum Alloys for Cable Technology

#T-1090


Creation of Low-Alloy Corrosion-Resisting Aluminum Alloys for Cable Technology

Tech Area / Field

  • MAN-MAT/Engineering Materials/Manufacturing Technology
  • MAT-ALL/High Performance Metals and Alloys/Materials

Status
3 Approved without Funding

Registration date
21.10.2003

Leading Institute
Institute of Chemistry named after V.I.Nikitin, Academy of Sciences, Republic of Tajikistan, Tajikistan, Dushanbe

Supporting institutes

  • Tajik Technical University named after M.S.Osimi, Tajikistan, Dushanbe

Collaborators

  • University of California / Department of Chemical Engineering and Materials Science, USA, CA, Davis\nUniversity of Southern California / Department of Aerospace and Mechanical Engineering, USA, CA, Los-Angeles

Project summary

The purpose of the Project is creation of the composition of low-alloy corrosion-resisting aluminum alloys for cable technology.

Today it is rational to use aluminum instead of deficient lead for creation of cable threads and cable sheaths. Aluminum sheaths are hermetic, totally enclosed and in 2-2.5 times more resistant than lead. They are highly resistant to vibration loads and do not have spontaneous crystal growth (we may see this spontaneous crystal growth in lead cable sheaths), which cause cable sheaths’ destruction. Cable with aluminum sheath has weighs considerably less than that with lead sheath. High electric conductivity of aluminum allows using aluminum sheaths as cable guard shield, protecting from electric effects, or as null thread of drive cables.

But the considerable disadvantage of aluminum sheath is its low corrosion resistance in comparison with lead’s one. This disadvantage requires special protection measures. Improvement of corrosion resistance of aluminum is the most important problem of contemporary material sciences as it is connected with increase of exploitation period of the materials on the basis of aluminum.

One of the methods of increase of corrosion resistance of aluminum is selection of alloying elements, which are anodes or cathodes of aluminum. Some transition metals and some alkaline earth metals are very perspective in this regard.

Thus, creation of the composition of low-alloy corrosion-resisting special aluminum alloys for cable technology is a new, little-studied and perspective task. Use of these alloys allows making thinner cable shielding for 15-20%, which in its turn promotes considerable economy of metal and funds. For example, 10 % decrease of metal intensity of cable shielding allows to have economical effect in the amount of: 3 000 tons * 1500 = 4 500 000 US $.

Project is oriented on creation of reorientation conditions for scientists, which engaged in the development of materials for the armaments industry and involvement of these scientists for solution of problems, connected with development of alloys for cable technology.

In order to solve this problem we plan to solve the following tasks:

1. Metal research tasks, connected with research of phase composition of the developing alloys with involvement of the main methods of physico-chemical analysis.

2. Corrosion tasks, connected with influence investigation of phase and chemical composition of alloys on their corrosion behavior. Climatic, natural, and working tests of alloys.

3. Electrochemical tasks connected with express-tests of synthesized alloys in standard environments, identification of electrochemical parameters of electrochemical corrosion process, identification of alloys’ corrosion mechanism and etc.

4. Kinetico-chemical and technological tasks connected with research of chemical activity of alloy from temperature and composition, determination of kinetic parameters, high-temperature corrosion process. Technological tasks are connected with determination of the complex of parameters and properties of alloys, first of all, of physical and technological nature.

We shall have regular information exchange with collaborator about work progress, jointly use some special equipment, and provide experimental models of alloys for testing.


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The International Science and Technology Center (ISTC) is an intergovernmental organization connecting scientists from Kazakhstan, Armenia, Tajikistan, Kyrgyzstan, and Georgia with their peers and research organizations in the EU, Japan, Republic of Korea, Norway and the United States.

 

ISTC facilitates international science projects and assists the global scientific and business community to source and engage with CIS and Georgian institutes that develop or possess an excellence of scientific know-how.

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