Compositions – Magnetic – Iron-oxygen compound containing
Patent
1987-01-12
1988-05-03
Bell, Mark L.
Compositions
Magnetic
Iron-oxygen compound containing
252 6258, 252 6259, 501 32, 501 46, C03C 321, C03C 1400, C04B 3526
Patent
active
047418494
ABSTRACT:
The glass composition is particularly applicable for ferrite constituents used for a highly efficient magnetic head. The composition essentially consists of (a) 55-70 wt % of V.sub.2 O.sub.5, (b) 18-wt % of P.sub.2 O.sub.5, (c1) up to 10 wt % of at least one alkaline metal oxide selected from Na.sub.2 O, K.sub.2 O, Rb.sub.2 O, and Cs.sub.2 O and (c3) up to 10 wt % of Tl.sub.2 O. The composition is in a non-crystalline state during reheating and has a softening temperature of 310.degree. C.-400.degree. C. and a thermal expansion coefficient of 70-130.times.10.sup.-7 /.degree.C.
REFERENCES:
patent: 3278317 (1966-10-01), Blair et al.
patent: 3393060 (1968-07-01), Blair et al.
patent: 3520831 (1970-07-01), Trap
patent: 3650778 (1972-03-01), Dumesnil et al.
patent: 3983074 (1976-09-01), Kahn et al.
patent: 4342943 (1982-08-01), Weaver
Denton, E. P. et al.; "Low Expansion Solder Glasses in the System ZnO-B.sub.2 O.sub.3 -V.sub.2 O.sub.5 ", Journal of the Society of glass Technology 252T-259T.
Naito Takashi
Namekawa Takashi
Ogihara Satoru
Bell Mark L.
Hitachi , Ltd.
LandOfFree
Ceramic body glass composition for bonding and filling ceramic p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ceramic body glass composition for bonding and filling ceramic p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic body glass composition for bonding and filling ceramic p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1504579