Russian Federal Nuclear Center –

Dr. A. KorshunovDr. A. Korshunov

Workshop « R&D on Materials in Russia and CIS »Workshop « R&D on Materials in Russia and CIS »

Paris, Paris, June 10 -11, 2002June 10 -11, 2002

TECHNOLOGICAL DEPARTMENT OF RFNC-VNIIEF

Main Tasks: investigation of material properties; development of new materials with specified properties; development of advanced technological processes.

Amount:

more than 500 persons including 340 scientific and engineer-technical employees.

Department Structure:12 scientific-technical laboratories;3 divisions;experimental mechanical base (workshop);necessary supporting services.

Fire-Proof Heat-Insulating Material

Distribution of a Temperature Field

Inside of Sandwich-Elements in Their

Joint Point

Heat-Insulating Material

5.1 cm

13.5cm 1.9 cm

steel

2 cm

Material Specifications:Density 400 - 550400 - 550 kg/m3

Compressive Strength 1.3 - 3.61.3 - 3.6 MPaCoefficient of Thermal Conductivity 0.093 - 0.1710.093 - 0.171 W/m·К 80 225 370 460

7 minutes20oC

500oC

<130oC

500oC

32 minutes

Polymer-based ecologically clean materials

• Characteristics: - provides protection at tube pressure of 85 kV ,- density, 2800-2900 kg/m3,- tensile strength 3.0-3.5 МPа, - lead equivalent at thickness of 1.8 mm 0.45 мм.

• Purpose: - is designed to manufacture protective materials for medical personnel and patients in medicalradiology.

X-ray protective material based on silicone rubber

Toxicological tests have been performed, and the permission of the RF Ministry of Public Health for the development and manufactureof protective clothes and shutters used in X-ray facilities.

Radiation-barrier material based on YG-2D polyurethane compound

• Characteristics: - provides protection at tube pressure of 120 кV,- density 4.5 kg/m3,- tensile strength 5.8 МPа,- lead equivalent with thickness of 1 mm 0.35 мм.• Process of production:direct molding

• Purpose:is designed to manu-facture protective materials to be used by medical personnel and patients inmedical radiology

Polymer-based ecologically clean materials

PDI-3A rubber-based radiation shielding material for X-rays

• Production procedure : spray-coating on a rigid base.

• Application:is used in robotics designed to eliminate nuclear power plant

accidents.

Polymer-based ecologically clean materials

CERMETS

Combination of a fire-proof ceramics with a metal binder gives cermets high structural strength, heat and corrosion resistance in aggressive mediums

Salt MeltGases: hydrogen, air

——» ——

Natural Silicate Melt

800

800

1300

LiAlO2+Ni

TiN+Ni

MoSi2+SiC+

+MoB

Working mediumT,°СComposition Application:

structural materials in chemical and glass industries;

electrochemical generator cells

PRODUCTION TECHNOLOGY FOR PLASTIC TUNGSTEN ALLOYS AND ITS PRODUCTS (1)

11670-680690-72016.8-17.1W-Cu

3-53-4620-630700-72018.0-18.1VNJ-3-2

11700-730700-75018.5-18.7VNJ 97,5

3-5~ 10680-700930-95017.9-18.1VNJ 95

4-5~20650-700950-100016.9-17.1VNJ 90

А, J/cm2, %0,2, MPaв, MPa, g/cm3Alloy

PRODUCTION TECHNOLOGY FOR PLASTIC TUNGSTEN ALLOYS AND ITS PRODUCTS (2)

Application:for X-ray shielding;

Gyroscope rotors;

Gamma-flow detectors; transport - transshipping isotopic containers;

Electrical contacts.

USE OF EXPLOSIVE ENERGY For Welding of Heterogeneous Metals

•Production of bimetal joints of various range has been run in. Products may be exposed to different machining methods: cutting, rolling, bending...

Used in thermoelectric conductive systems, non-ferrous metallurgy, power engineering, laser technique, instrument making, machine-building etc.

Advantages:high strength of a joint welded;improved structural rigidity;high economical efficiency

DIFFUSION ZINC PLATINGof structural steels instead of cyanic cadmium plating

Technology allows production of thin (5-30 µm) non-porous coatings on any complex shape parts. Corrosion resistance of diffusion zinc coating is in a par with resistance of coating with galvanic cadmium. Technological process is economical and environmentally friendly. Method is used in production of fixing parts and other parts in different machine-building industries (avia-, automotive industry, etc.)

Summary:

Bearing ability of 190 MPa for undemountable joints; 55 MPa for demountable joints.After 20 thermal cycles at the temperatures from -50 to +50 С a joint didn’t loose its tightness.

Advantages:possibility to join pipes of different materials including ones being unjoinable by conventional methods (welding, soldering and others);fire- and explosive safety in work performance;simplicity and a short time needed for assembly;absence of areas of thermal and electric exposure

Used in : Aviation, spacecrafts, oil- and gas pipelines, construction, medicine, ship-building, chemical industry, automobile industry, etc.

DEMOUNTABLE PIPELINE JOINTS with couplings of titanium nickelide - shape memory alloy