B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 3/11 (2006.01) A61L 27/04 (2006.01) A61L 27/30 (2006.01)
Patent
CA 2393040
The invention relates to a mixture of two particulate phases which is used in the production of a green compact that can be sintered at higher temperatures. According to the invention, A) the first phase contains particles that consist of a metal and/or a metal alloy and/or a metal compound, and B) the second phase contains particles from the group of the inorganic compounds which do not release any decomposition products at temperatures of more than 400 °C that are interstitially soluble in the sintering metal phase and/or that react with said phase to stable compounds. The inventive mixture, by providing the second phase, is effective in supporting the fine structure of the first phase against the forces of surface tension during the sintering process. During sintering, the second phase remains thermally stable and substantially chemically inert with respect to the first phase.
La présente invention concerne un mélange constitué de deux phases particulaires, servant à produire un compact vert apte au frittage à des températures élevées, dans lequel: A) la première phase contient des particules constituées d'un métal et/ou d'un alliage métallique et/ou d'un composé métallique; et B) la seconde phase contient des particules comprenant des composés minéraux qui ne libèrent pas de produits de décomposition au-dessus de 400 DEG C, qui, dans la phase métallique de frittage, sont solubles du point de vue interstitiel et/ou qui réagissent avec elle pour donner des composés stables. Le mélange présente un effet support efficace de la structure fine de la première phase contre les forces de tension superficielle qui s'exercent par la seconde phase lors du processus de frittage. Lors de ce processus de frittage, la seconde phase reste non seulement thermiquement stable, mais aussi essentiellement chimiquement inerte vis-à-vis de la première phase.
Marks & Clerk
Stratec Medical Ag
LandOfFree
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