公开(公告)号：WO9711038A3

公开(公告)日：1999-04-08

申请号：PCT/US9614302

申请日：1996-09-05

Applicant: THERMAT PRECISION TECHNOLOGIES

Inventor： HENS KARL FRANK ,  GROHOWSKI JOSEPH A JR

IPC: C04B35/00 ,  B22F1/00 ,  B22F3/02 ,  B22F3/22 ,  C04B35/634 ,  B22F3/10

CPC classification number: B22F3/225 ,  B22F1/0059 ,  B22F3/22 ,  B22F2001/0066 ,  B22F2998/00 ,  B22F2999/00 ,  C04B35/634 ,  C04B35/63408 ,  C04B35/63488 ,  B22F3/1291 ,  B22F1/0003 ,  B22F9/082 ,  B22F9/305 ,  B22F1/0007

Abstract: Provided is a powder and binder system for manufacturing sintered parts from particulate material, and a method of injection molding parts for sintering. The particulate material includes ceramic, metallic and intermetallic powders. Preferably, selected powder particles are coated with one or more additives (19, 21 and 23) depending on their shape and surface chemistry to create a powder system. The additives may include antioxidants, coupling agents, surfactants, elasticizing agents, dispersants, plasticizer/compatibilizers and lubricants. The surface active additives are designed to improve the interface between the powder and the binder. The powder system may be mixed or compounded with a binder system in an inert atmosphere to form a powder and binder system, or feedstock, for powder molding. The binder system may contain one or more components which are removed prior to sintering the powder. The powder and binder system may also be molded about an expendable core which is extracted prior to sintering.

Abstract translation: 提供了一种用于从颗粒材料制造烧结部件的粉末和粘合剂体系，以及用于烧结的注射成型部件的方法。 颗粒材料包括陶瓷，金属和金属间粉末。 优选地，根据其形状和表面化学性质，选择的粉末颗粒涂覆有一种或多种添加剂（19,21和23）以产生粉末体系。 添加剂可以包括抗氧化剂，偶联剂，表面活性剂，弹性剂，分散剂，增塑剂/增容剂和润滑剂。 表面活性添加剂被设计成改善粉末和粘合剂之间的界面。 粉末系统可以在惰性气氛中与粘合剂体系混合或混合，以形成用于粉末成型的粉末和粘合剂体系或原料。 粘合剂体系可以包含在烧结粉末之前被除去的一种或多种组分。 粉末和粘合剂体系也可以围绕在烧结之前提取的一次性核心模制。