公开(公告)号：US20030170137A1

公开(公告)日：2003-09-11

申请号：US10095272

申请日：2002-03-11

Applicant: Advanced Materials Technologies Pte Ltd.

Inventor： Chee-Tian Yeo ,  Lye-King Tan

IPC: B22F003/10

CPC classification number: C22C1/058 ,  B22F3/1003 ,  B22F3/1035 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C32/0063 ,  C22C32/0089 ,  B22F1/0014 ,  B22F3/1025 ,  B22F3/225 ,  B22F3/1021

Abstract: Although MIM (metal injection molding) has received widespread application, aluminum has not been widely used for MIM in the prior art because of the tough oxide layer that grows on aluminum particles, thus preventing metal-metal bonding between the particles. The present invention solves this problem by adding a small amount of material that forms a eutectic mixture with aluminum oxide, and therefore aids sintering, to reduce the oxide, thereby allowing intimate contact between aluminum surfaces. The process includes the ability to mold and then sinter the feedstock into the form of compacted items of intricate shapes, small sizes (if needed), and densities of about 95% of bulk.

Abstract translation: 虽然MIM（金属注射成型）已经得到广泛应用，但是由于在铝颗粒上生长的韧性氧化物层，因此铝在现有技术中尚未广泛用于MIM，从而防止颗粒之间的金属 - 金属结合。 本发明通过添加少量与氧化铝形成共晶混合物的材料来解决该问题，因此有助于烧结以减少氧化物，从而允许铝表面之间的紧密接触。 该方法包括将原料模塑并随后烧结成复杂形状，小尺寸（如果需要）和压实体积约95％的压实物品的形式的能力。