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Metal - Diamond Powder Composites

#1935


Metal-Matrix Composites on the Basis of Nano-Diamond and Nano-Metal Powders

Tech Area / Field

  • MAT-COM/Composites/Materials

Status
3 Approved without Funding

Registration date
19.07.2000

Leading Institute
Institute of Electrophysics, Russia, Sverdlovsk reg., Ekaterinburg

Supporting institutes

  • MISIS (Steel and Alloys), Russia, Moscow\nVNIITF, Russia, Chelyabinsk reg., Snezhinsk

Collaborators

  • Korea Atomic Energy Research Institute, Korea, Yusung Taejon\nForschungszentrum Karlsruhe Technik und Umwelt, Germany, Karlsruhe

Project summary

The metal-matrix composites are the perspective class of engineering materials, which fields of application are extremely wide [1].

There are two basic ways of obtaining of metal-matrix composites. They are based on foundry technologies and on powder metallurgy.

The traditional ways of a powder metallurgy not always can complete with foundry technologies at wide production of metal-matrix composites. However some technologies from area of a powder metallurgy are rather competitive, for example, OSPPREI-METHOD. The proposed project based on applying of other extremely effective way based on usage of nanotechnologies.

In the advanced project it is supposed to conduct researches and to elaborate new ways of obtaining of metal-matrix composites, namely: using a high surface activity of nanopowders, which one will be applied both to creation of a matrix, and for strengtheners, to increase essentially wetting and considerably to increase properties of MMC at usage of powders of strengtheners from nanodiamond powders. Existing manufacturing techniques of foundry MMC do not allow to apply nanodiamond powders, because diamond as graphite can not be at high temperatures.

In the project will be used metal nanopowders, received by an electroexplosive way, designed in IEP UD of RAS, and also will be investigated the processes of interplay of these powders with strengthening particles of nanodiamond powders, the way of obtaining of which is designed in VNIITF.

The technology of mixing of nanopowders in different proportions will be designed in the project. It is necessary to mark, that nanoparticle sizes in a mixture of nanopowders influence on their interplay between themselves. The biggest part of the project is dedicated to research of interplay different nanoparticles between themselves.

The technologies of intensive pulse mechanical treatment of nanopowder mixtures in vacuum, ensuring both achievement of high degrees of condensation, and modification of pattern of reshaped composites under operating of intensive plastic deformation will be designed. The basis of such technologies will be processes of fast pulse movement of environment with speeds ~ 30 m/s at pulse pressure 1-3 GPa, realizable on the magnetic-pulse equipment created in IEP of UD of RAS. Due to realization of all process in vacuum, it is probably to eliminate and to control the contents of oxygen and other foreign materials in a metal matrix.

For strengthening of wetting processes there probably will need the processing of samples with pressure up to 20GPa, that will be realized on the RFNC-VNIITF equipment.

The major part of the project is the research of influence of heat treatment on properties of metal-matrix composites on the basis nanodiamond and nanometal powders. The relevance of this problem is underlined by impossibility of hyperthermal processing because of presence of diamond nanopowders.

Designed technologies will allow receiving new materials. The considerable part of the project is dedicated to research of properties of new materials, determination of relations between a structure of metal-matrix composites and their properties. The database on properties of new materials will be created.

The participants of the project have a sufficient backlog for fulfilment of the proposed project. In IEP of UD of RAS the direction of obtaining metal nanopowders by a method of electrical detonating of wire is advanced, and also methods of their dynamic compacting, that is showed in the ISTC project #483 [2-5].

VNIITF for the long time fruitfully works on a problem of obtaining of nanodiamond powders with the help of different methods, and also disposes the equipment for pressing materials with pulse pressure up to 20 GPa.

The leader assistant from MSISA drove training on subject "Metal-matrix composites" in Delpth University (Netherlands); he has a number of patents on the given subject and now some applications for obtaining of the patents are esteemed in FIPS.

The institutes have the basic complex of the indispensable experimental and analytical equipment requiring for fulfilment of activities on the project, and also qualified personnel.

As a result of fulfilment of activity will be obtained as new basic knowledge of processes of nanoparticle interplay from different materials and about the MMC characteristics, obtained on new technologies, and worked out technologies of obtaining of MMC with the improved properties.

Literature:

1. O.T.Modling and O.Grong. Processing and Properties of Particle Reinforced Al-SiC MMCs./ “Key Engineering Materials”, Vols.104-107, 1995, pp.329-354.

2. Kotov Yu.A., Azarkevich E.I., Beketov I.V., Demina T.M. Murzakaev A.M., Samatov O.M. Producing Al and Al2O3 Nanopowders by Electrical Explosion of Wire. Key Engineering Materials. Trans. Tech. Pub., V. 132-136, pp. 173-176.

3. Kotov Yu.A., Azarkevich E.I., Beketov I.V., Murzakaev A.M Synthesis of Nanometer-sized Powders of Alumina Containing Magnesia. Proceed. оf 9th Intern. Confer. on Modern Materials Technologies – CIMTEC-98, June 14-19, 1998, Florence, Italy, Part B, pp. 277-284.

4. Ivanov V., Paranin S., Nozdrin A. Principles of Pulsed Compaction of Ceramic Nanometer-sized Powders. Key Engineering Materials, 1997, V.132-136, pp. 400-403.

5. Ivanov V.,Khrustov V. Preparation of Ceramics from Magnetic-pulsed-compacted Nanometer-sized Al2O3 Powder. Inorganic Materials, 1998, V. 34, 4, pp. 401-404.


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