HiPIMS refers to the technology of high power impulse magnetron sputtering. Researchers were constantly seeking for methods to enhance the plasma density of coating technologies. Vladmir Kouznetsov was the pioneer who demonstrated the possibility of gaining high density plasma by pulsing the cathodes with negative voltage in short pulses.
The high plasma density made it possible to obtain high quality coatings with high density and excellent mechanical properties, and brings the possibility of generating nano structured materials with size effects.
Plasmatrix has already spent 10 years of effort to understand the physics behind.
ViBraCoat-a brand new material brings damping with stiffness:
‘VibraCoat’ is one of the brand names of Plasmatrix Materials AB and refers to a member of a family of multi-functional nanostructured metal matrix composites with elastic modulus comparable to metals, resilience comparable to rubbers, hardness comparable to ceramics and vibration damping comparable to polymers. The proposal aims at commercialize the process technology and VibraCoat material for an integrated vibration damping solution for tooling systems used in manufacturing industry: tool holders and cutting insert supports (shims). At this stage, the developed VibraCoat material has an elastic modulus of 50 GPa, hardness of 2.5 GPa, resilience of 60% spring-back, loss factor of ~40% and withstand temperature up to 450°C. These properties make VibraCoat a unique candidate for absorbing shocks and vibration energy during machining as there are very few viable solutions in the harsh environment of machining.
Material's Properties Table Under Ambient Conditions:
Materials | Young's modulus | Lossfactor | Loss modulus | Hardness | Temperature | Machinability | Friction Coef. |
Visco. Polymer | <100 MPa | 0.5-1 | <100 MPa | NA | <50 °C | No | 1 |
Grey Cast Iron | ~ 87 GPa | 0.017 | ~ 1.48 GPa | 2.14 GPa | ~500 °C | Yes | 0.2-0.3 |
Carbon NT¹ | 6 GPa | ~ 0.12 | ~ 0.66 GPa | NA | ~ 400 °C | No | N.A. |
PMMA² | 4.2 GPa | ~ 0.085 | 0.378 GPa | <0.3 GPa | ~ 160 °C | Difficult | 0.2-0.3 |
ViBraCoat | 40 GPa | 0.08 | 3.2 GPa | >3.7 GPa | ~ 400 °C | Yes | 0.04 |
It is clearly seen from the table that ViBraCoat has its own competence over other materials on constructing high dynamic stiffness structures. It\s friction coefficient property is extraudinary as it is lower than teflon material or most diamond like carbon (DLC).
¹ Liu, Qianli, et al. Interlocked CNT networks with high damping and storage modulus. Carbon, 2015.
² http://www.csm-instruments.com/en/Investigation-of-creep-behaviour-using-Micro-or-Nano-Indentation-Tester-MHT-NHT
Plasmatrix in HiPPOCAMP
In HiPPOCAMP project, Plasmatrix discovered the bridge between material's mechanical properties and nano structures..
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