31.12/2018
Merry Christmas and Happy New Year!
29.11/2018
POLEMA showed powders for additive manufacturing at the international exhibition Formnext 2018
05.09/2018
POLEMA, JSC: advanced developments for extreme temperatures and aggressive environments
The implementation of large-scale investment projects and a powerful research laboratory allow POLEMA, JSC to be at the forefront of new materials creating. POLEMA is ready to supply products for the most difficult conditions and participate in solving the tasks of introducing additive technologies at Russian enterprises.
03.06/2011
Progressive materials for multi-functional vacuum coatings
Application fields of materials for multi-functional vacuum coatings, characteristics of sputtering targets and evaporable sources used for technologies of physical deposition of hardening, protective, decorative and light-reflecting coatings, resistive, switching and transparent electro conductive films.
Zink and Zn-Al for coatings
Use
The Zink powder and its alloys are used to protect apparatuses, containers, reservoirs, pools, pipes, heat exchangers, bridges, hydraulic structures, power-industry equipment, vessel hulls, and other metallic structures from continuous and pitting corrosion. Powder ddischarge rate while spraying onto metallic surfaces when creating a coating with a thickness of 200 microns is approximately 1.7-1.8 kg/m2. Handheld gas-fired torches or mechanized apparatuses are used for deposition.
A reliable method for protecting metallic structures made from carbonic and low-alloy steels from corrosion is to apply coatings of Zn-Al alloy to their surfaces. Thermal Zn-Al coating applied using AP-ZnAl16 powder effectively protects structures and equipment used in the atmosphere and in fresh- and saltwater. The servicable life of the coating depends on the thickness of layers applied and can reach several decades.
Zink powder AP-Zn
Chemical composition, %
| Grade | Zn | Fe | Cu | Ti | Pb |
|
AP-Zn Gas-sprayed |
base | 0.1 max | 0.02 max | 0.02 max | 0.02 max |
Particle size (base fraction), microns:
- 0-40;
- 40-100;
- 50-160.
The powder can be prepared with other size requirements.
Powder of Zn-Al alloys AP-ZnAl16
Chemical composition, %
| Grade | Zn | Al | Fe | Cu | Ti | Pb |
|
AP-ZnAl16 Gas-sprayed |
base | 16 | 0.1 max | 0.02 max | 0.02 max | 0.02 max |
Particle size (base fraction), microns:
- -40 (45);
- 40-80, 40-160;
- 140-315.
