Abstract: Disclosed is a composition for metallizing a ceramic surface which consists essentially of 10.0 to 32.5% by weight of Mn, 45.0 to 67.5% by weight of W, up to 5.0% by weight of at least one member selected from Ti and Zr, and Ag and Ni in a total amount of 15.0 to 35.0% by weight, the amount of Ni being 5.0 to 20.0% by weight of the total amount of Ni and Ag. This composition is applied to the surface of a ceramic body in the form of a metal paste or metal powder and heat-fusion-bonded to the ceramic surface, or the composition is applied to the surface of a ceramic body by the gas-phase deposition method.

Abstract: A metallizing composition essentially consists of given amounts of Ni, Nb, Cr, C, Si, Zr, SiC and W and is used for metallizing the surface of ceramics such as Si.sub.3 N.sub.4, SIALON, A1N, high purity alumina and so on. This composition forms a metallized layer having an excellent bonding strength to the ceramic surface.

Abstract: Amorphous alloys containing zirconium as an amorphus forming metal and having the formula X.sub..alpha. Z.sub..gamma. wherein X is at least one of Fe, Co and Ni, .alpha. is 80 to 92 atomic %, Z is zirconium, .gamma. is 8 to 20 atomic % and the sum of .alpha. and .gamma. is 100 atomic %, cause very little variation of properties during aging and embrittlement because they contain no metalloid as the amorphous forming element, and they further have excellent strength, hardness, corrosion resistance and heat resistance and maintain superior magnetic properties which are characteristic of iron group elements.

Abstract: Amorphous alloys containing zirconium as an amorphous forming metal and having teh formula X.sub..alpha. Z.sub..gamma. wherein X is at least one of Fe, Co and Ni, .alpha. is 80 to 92 atomic %, Z is zirconium, .gamma. is 8 to 20 atomic % and the sum of .alpha. and .gamma. is 100 atomic %, cause little variation of properties during aging and embrittlement because they contain no metalloid as the amorphous forming element, and they further have excellent strength, hardness, corrosion resistance and heat resistance and maintain superior magnetic properties which are characteristic of iron group elements.

Abstract: Microcrystalline thin strips for highly permeable magnetic material having a tensile strength of more than 35 kg/mm.sup.2 and a bending fracture strain of more than 8.times.10.sup.-3 and consisting of 7.0-9.6% of Si, 5.5-7.5% of Al, 0.3-3.0% of Mo, 0.3-4.0% of Ni, 0-0.5% of Ca and the remainder being substantially Fe. The thin strips are easy to produce and have high tensile strength and flexibility. Thus the thin strips can be used for a variety of magnetic materials by working the thin strips. Two examples of commercial utility of the invention include a core for a voltage or current transformer and a magnetic head core for use in recording devices.