Patent ID: 7785529
Filing Date: 2010-08-31
Classification: B22F,B23K,C23C,Y02P,Y10T

Abstract:
1. A method for fabricating a tridimensional solid object by sintering inorganic particles with a controlled size distribution, the method comprising: simultaneously directing at least one powdery stream of the inorganic particles and at least one heating flux onto a rigid target area; and maintaining at least bidimensional relative movement between the rigid target area, the powdery stream, and the heating flux during said directing operation, wherein the powdery stream is shaped as a cone with a vertex angle of the cone not exceeding 45°, the powdery stream being directed such that a longitudinal axis extends in a direction of the heating flux and a vertex of the cone is disposed on the rigid target area, wherein a dimensional distribution of the inorganic particles is selected such that about 90% by weight of the inorganic particles are 0.5 to 20 μm in size, wherein the inorganic particles are composed of agglomerated crystallites of less than 10 wherein said powdery stream includes the inorganic particles mixed with at least one carrier gas so as to constitute a solid aerosol, wherein the heating flux has a width on the rigid target area not exceeding 20 μm, wherein the inorganic particles are composed of at least two phases: wherein the solid object is fabricated by sintering the inorganic particles directly onto the rigid target area such that only the inorganic particles of the at least one other phase are melted.