公开(公告)号：US3562186A

公开(公告)日：1971-02-09

申请号：US3562186D

申请日：1970-03-02

Applicant: GEN MOTORS CORP

Inventor： KESTEN PATRICK N ,  WEBB RICHARD A ,  FLOCK WILLIAM M

IPC: C04B37/02 ,  H01B1/02 ,  H01T13/20

CPC classification number: C04B37/026 ,  C04B37/025 ,  C04B2235/5436 ,  C04B2235/6567 ,  C04B2235/784 ,  C04B2237/10 ,  C04B2237/123 ,  C04B2237/126 ,  C04B2237/341 ,  C04B2237/62 ,  C04B2237/72 ,  C04B2237/84

Abstract: THIS INVENTION RELATES TO AN IMPROVEDCERAMIC-TO-METAL CONDUCTIVE GLASS SEAL FOR CERAMIC INSULATORS AND MORE PARTICULARLY TO COMPOSITIONS COMRISING GLASS, IRON, COPPER, AND ALUMINIUM WHICH ARE SUITED FOR USE IN THE CENTERBORE OF SPARK PLUGS. THE IMPROVED SEAL OF OUR INVENTION COMPRISES A MIXTURE ON A WEIGHT BASIS OF ABOUT 50-65 PARTS IRON, 1-4 PARTS COPPER, 3-5 PARTS ALUMINUM, AND 30-45 PARTS GLASS; A PREFERRED EMBODIMENT COMPRISES ABOUT 56 PARTS IRON, 2 PARTS COPPER, 3 PARTS ALUMINUM,

AND 39 PARTS GLASS. THE ADDITION OF A FILLER MATERIAL SUCH AS MULLITE ENABLES THE BROADENING OF THE RANGE OF OUR COMPOSITION TO ABOUT 35-55 PARTS IRON, 1-4 PARTS COPPER, 3-5 PARTS ALUMINUM AND 30-50 PARTS GLASS, THE FILLER BEING PRESENT IN AN AMOUNT OF ABOUT 5-15 PARTS; A PREFERRED EMBODIMENT COMPRISES ABOUT 45 PARTS IRON, 2 PARTS COPPER, 3 PARTS ALUMINUM, 40 PARTS GLASS AND 10 PARTS MULLITE.

公开(公告)号：US3615763A

公开(公告)日：1971-10-26

申请号：US3615763D

申请日：1969-06-04

Applicant: GEN MOTORS CORP

Inventor： FLOCK WILLIAM M

IPC: C04B35/111 ,  C04B33/26

CPC classification number: C04B35/111

Abstract: This invention relates to sintered ceramic articles of the type usable as electrical insulators in an environment under which , body is subjected to wide ranges of temperature variation while meeting high-strength requirements and of the type also usable in other applications requiring high-strength and a high resistance to thermal shock such as the turbine and nuclear reactor parts; such a body consisting essentially of a reaction product which, calculated as oxides, approximates 94-96.5 weight percent A12O3 and a mixture of SiO2, CaO, and MgO which mixture falls within a parallelogram-shaped area on a weight percent triaxial diagram approximately bounded by the compositions represented as follows: A B C D SiO2 60% 46% 46% 60% CaO 32% 39% 44% 37% MgO 8% 15% 10% 3%