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US 5,215,946 AGranted
Preparation of powder articles having improved green strength
AssigneeAllied-Signal Inc.
InventorNguyen Q. Minh
Life of this patent
Estimating the term…
Abstract
A method for preparing an article from a powder includes the step of providing a partially consolidated mixture of a solid powder and an organic binder system. The partially consolidated mixture is contacted with a stiffening solution comprising a stiffening agent that effects at least partial cross-linking of the organic binder system, and a solvent that dissolves the stiffening agent but not the organic binder system. The binder system is thereafter removed, and the article sintered.
Claims13
A method for preparing a preform from a powder, comprising the steps of:
- processing to form a partially consolidated mixture of a solid powder and an organic binder system;
- contacting the partially consolidated mixture with a stiffening, liquid solution comprising
- a stiffening agent that effects at least partial cross-linking of the organic binder system, and
- a solvent that dissolves the stiffening agent but not the organic binder system;
- and drying to remove the solvent of the stiffening, liquid solution.
2 more elements
A method for preparing a preform from a powder, comprising the steps of:
- mixing a solid powder with an organic binder system;
- forming a partially consolidated mixture;
- placing the partially consolidated mixture into a stiffening, liquid solution of
- a stiffening agent that reacts with the organic binder system to form a cross-linked organic structure, and
- an organic liquid that dissolves the stiffening agent but not the organic binder system;
- and drying to remove the solvent of the stiffening, liquid solution.
3 more elements
Dependencies are inferred from the claim text.