Powder for laser sintering, and use
AssigneesInfinite Flex GmbH, Infinite Flex (Taicang) Co. Ltd.
InventorsKangkai Ma, Ulrich Andreas Hirth
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Abstract
A surface-modified powder for laser sintering that allows improved incoupling of the radiation energy of the laser. The surface-modified powder avoids problems arising in the laser sintering of materials having a low absorptance for the laser radiation. The surface-modified powder has particles having particle cores and having laser absorbers bonded to a surface of each particle core, the laser absorbers covering at least 25% of the surface of each particle core and having a higher absorptance for laser radiation for laser sintering than the particle core.
Claims9
A surface-modified powder for laser sintering, comprising
- particles, each of the particles having a particle core consisting of pure copper and laser absorbers bound to a surface of each particle core, wherein the laser absorbers partially occupy the surface of each particle core to an extent of at least 25% and have a higher degree of absorption for laser radiation in the near infrared range for laser sintering with respect to the particle core,
- wherein the laser absorbers consist of dicopper hydroxide phosphate, are bound by physisorption to the surface of the each particle core by a process of mixing the particle cores and the laser absorbers, and have a degree of absorption of at least 20% for the laser radiation.
Dependencies are inferred from the claim text.