Corrosion resistant cemented carbide

Patent · Tue Oct 16 00:00:00 EDT 1990

OSTI ID:5154718

Hong, J

This paper describes a corrosion resistant cemented carbide composite. It comprises: a granular tungsten carbide phase, a semi-continuous solid solution carbide phase extending closely adjacent at least a portion of the grains of tungsten carbide for enhancing corrosion resistance, and a substantially continuous metal binder phase. The cemented carbide composite consisting essentially of an effective amount of an anti-corrosion additive, from about 4 to about 16 percent by weight metal binder phase, and with the remaining portion being from about 84 to about 96 percent by weight metal carbide wherein the metal carbide consists essentially of from about 4 to about 30 percent by weight of a transition metal carbide or mixtures thereof selected from Group IVB and of the Periodic Table of Elements and from about 70 to about 96 percent tungsten carbide. The metal binder phase consists essentially of nickel and from about 10 to about 25 percent by weight chromium, the effective amount of an anti-corrosion additive being selected from the group consisting essentially of copper, silver, tine and combinations thereof.

• Assignee: GTE Valenite Corp., Troy, MI (USA)
• Patent Number(s): US 4963183; A
• Application Number: PPN: US 7-318865
• OSTI ID: 5154718
• Resource Relation: Patent File Date: 3 Mar 1989
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TUNGSTEN CARBIDES
CORROSION RESISTANCE
ADDITIVES
BINDERS
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
COPPER COMPOUNDS
NICKEL COMPOUNDS
SILVER COMPOUNDS
TIN COMPOUNDS
CARBIDES
CARBON COMPOUNDS
MATERIALS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
360205* - Ceramics
Cermets
& Refractories- Corrosion & Erosion