Materials and manufacturing technologies

ALOTEK Contact Protection Technology

Fireproof, and efficient operation of electrical contact elements based on the use of shape memory materials. ALOTEK Сontact Protection Technology provides contact temperature control and overheating detection, contact pressure stabilisation, sealing of the contact connection and automatic destruction of the oxide film on the contact surface. The technology provides the widest range of protection among all known technical solutions. Innovative technology provides trouble-free 

ALOTEK Сontact Protection Technology components

• Intermetallic thermal indicators - for continuous monitoring of the temperature regime of the contact connection (24x7), in case of overheating, this fact is recorded
• Intermetallic stabilizers - for automatic control and regulation of contact pressure, connection protection from overheating and thermal destruction
• Composite grease based on Camital alloy powder - automatically destroys oxide films and slows down the aging process of contact elements during the operation of electrical installations

Camital alloy

Functional intermetallic compound that is a part of materials with shape memory and superelasticity effects. The unique properties determines Camital's belonging to smart materials and the high relevance of their study and application in various fields. There is a combination of properties in this group of materials that is usually inherent in several materials or devices. Elements based on these materials combine the functions of temperature sensors and actuators at the same time.

Camital alloy elements develop reactive forces of hundreds of MPa. By converting three types of energy (electrical, thermal, mechanical), in a certain temperature range, Camital acts as a working fluid and an organ at the same time and is the simplest "transformer" of thermal energy into mechanical energy

Camital alloy characteristics

Smelting point, ^оС                     1000-1060

Density, g\cm³.                                   7,05

Electrical resistance, μΩ·cm               9–11

Thermal conductivity, W/cm·^oС        45-60

Young's modulus, GPa 

For stages: beta version                        90

martensite                                              85

Thermomechanical stress, MPa  

For stages: beta version                       500

martensite                                             200

Mechanical strength, MPa                600–800

Temperature conversion scale, ^оС    -120...+200 

Maximum allowable relative deformation, %  5,2