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US 2025/0154068 A1Published application
Method of making a diamond composite
AssigneeSandvik Machining Solutions AB
InventorsJohn DE FLON, Malin MARTENSSON, Carl DOSSLING
Life of this patent
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Abstract
In a method of making a diamond composite a diamond green body, together with an infiltrant, is placed onto a graphite crucible and the graphite crucible is placed onto a carbon source, such that during infiltration, excess infiltrant is leaked down to the carbon source and excess infiltrant is thus avoided on the diamond composites.
Claims12
A method of preparing a diamond composite comprising the steps of:
- providing at least one diamond green body including at least 25 vol % of diamond particles and an organic binder;
- providing an infiltrant;
- placing the at least one diamond green body together with the infiltrant onto a graphite crucible;
- subjecting the at least one diamond green body to at least one debinding step before and/or after placing the at least one diamond green body together with the infiltrant onto the graphite crucible, thus forming at least one debound diamond green body;
- and
- subjecting the at least one debound diamond green body to an infiltration step at a temperature of between 1500 and 1680° C., in a vacuum or in a presence of a protective gas at a pressure of below 50 mBar, for a time between 5 and 60 minutes, wherein, during the infiltration step, the graphite crucible, together with the at least one debound diamond green body and the infiltrant, is placed onto an underlying carbon source.
3 more elements
Dependencies are inferred from the claim text.