| 摘要 |
A selective inhibition of sintering (SIS) technique may be used to fabricate a three-dimensional (3-D) dense metal object from a binderless metal powder. A number of layers (205) of metal powder are provided on a build tank (210). For each layer, regions of the layer are sinter-inhibited, e.g., by depositing a sinter-inhibiting material (225) such as a ceramic slurry, a metal salt, or oxidizing metal particles in the powder using chemicals or a concentrated heat source. Each layer may be compacted (235) before the next layer is provided. A final compact may then be sintered (240). Unwanted sintered sections (250) may be removed from the compact at boundaries formed by the sinter- inhibited (unsintered) regions, and the object extracted (245). |
