Compositions: ceramic – Ceramic compositions – Refractory
Patent
1988-06-17
1989-10-10
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Refractory
501123, 501125, 501128, 501133, C04B 3582
Patent
active
048732095
ABSTRACT:
Insulating lightweight refractory materials which are resistant to attack by molten metals, particularly molten aluminum and its alloys and compositions used to form such materials. The materials are settable compositions which comprise a mixture of ceramic fibers, wollastonite powder and aqueous colloidal silica having a solids content of about 5-25% and preferably 12-15% by weight. The weight ratio of the ceramic fibers to the wollastonite powder is 0.8-1.2:1.5-2.5, respectively. The composition optionally contains carbon fibers or metal fibers as reinforcements. The composition can be cast to form shaped products or used as a joining material or as a "face-off" material to protect an underlying article. When dried, the composition forms a material which is insulating, light-weight and resistant to high temperature and chemical attack by metals. The material can be made even more resistant to attack by a silicate and/or fluoride surface treatment. The material is useful for forming items used in metal foundries and the like.
REFERENCES:
patent: Re31589 (1984-05-01), Phoenix et al.
patent: 3558591 (1971-01-01), Yendrek
patent: 3567667 (1971-03-01), Rumbold
patent: 4069859 (1978-01-01), Nagai et al.
patent: 4174331 (1979-11-01), Myles
patent: 4248752 (1981-02-01), Myles
patent: 4257812 (1981-03-01), Johnson et al.
patent: 4366255 (1982-12-01), Lankard
patent: 4430121 (1984-02-01), Shima
patent: 4455246 (1984-06-01), Schmidt et al.
patent: 4506025 (1985-03-01), Kleeb et al.
patent: 4681819 (1984-06-01), Gnyra
patent: 4773470 (1988-09-01), Libby et al.
"Methods for Upgrading Common Silicate Refractories and Foundry Iron Implements Against the Attack by Molten Aluminum Alloys", B. Gnyra-Published in Light Metals, 1986, p. 797.
Alcan International Limited
Dixon Jr. William R.
Group Karl
LandOfFree
Insulating lightweight refractory materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Insulating lightweight refractory materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Insulating lightweight refractory materials will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1957580