Skip to main content

Micro-diamond synthesis – a revolutionary new approach


Abstract

Scientists from Goethe University Frankfurt am Main developed a new method for micro-diamond synthesis. The method facilitates diamond formation at much lower pressure and temperature compared to established procedures.


Background

Multiple successful experiments showed the crystallization of diamonds after only 6-15hours at 5-7GPa and 1200-1300°C. These parameters are remarkably lower compared to other industrial applicable methods. In addition the diamonds form without the need of a seed crystal and contain no metal impurities.


Problem

Existing high-pressure-high-temperature methods need to work with extremely high pressure and temperature to allow synthetic diamond formation. Lösung


Solution

The basic idea about the method is the usage of a carbon-containing fluid instead of graphite for diamond synthesis. Special inner and outer capsules together with an adapted pressure medium have been developed that successfully resolve occurring issues using a fluid medium as starting material instead of a solid, e.g. the stabilization of hydrogen fugacity and inhibition of hydrogen exchange. The composition of the carbon-containing fluid, the selection of involved high-pressure materials as well as the pressure and temperature parameters have been carefully optimized to produce a remarkable amount of synthesized micro-diamonds.


Advantages

• Lower costs of synthetic diamond production due to only 5-7GPa pressure and 1200-1300°C temperature

• Much faster (<< 1day) reaction compared to established methods

• No seed crystal needed and no metal impurities

• Method compatible to existing high-pressure-high-temperature methods


Scope of application

Synthetic diamond formation


Service

• The technology can be licensed or assigned

• Collaborations regarding further development are welcome


INNOVECTIS Gesellschaft für Innovations-Dienstleistungen mbH

Kirstin Schilling
06925616320
info@innovectis.de
www.innovectis.de
Address
Altenhöferallee 3
60438 Frankfurt



Development status

Proof of concept


Keywords

synthetic diamond, doped diamonds

Contact | Main Office

TechnologieAllianz e. V.
Christiane Bach-Kaienburg
(Managing Director)

c/o PROvendis GmbH
Schloßstr. 11-15
D-45468 Mülheim an der Ruhr