Permanent magnet anisotropic properties

[...]-to-an LC)=820 oersted. If the alloy is cast so that the crystals themselves into columnar orientation such that the direction (100) is parallel to the magnetic axis, is obtained (the BH) between 6.10 " and 7.10 Gaussian oersted, and a coercive force greater than 850 oersted. In another example embodiment of the invention, a [...] 8% iron containing aluminum, 13% nickel, 25% cobalt, 3% copper, 1% 3% tantalum and titanium, subjected to magnetic quenching and aging resistance specified in the example previous without formation of columnar crystals, provides, an anisotropic magnetic material having the following properties: remanence (brr)=10,000 gaussian, (the BH)=3.85 x 10g Gaussian oersted and coercive force (HCs)=790 oersted. In a third example embodiment of the invention, an iron-based alloy containing 8% aluminum, 13% nickel, 25% cobalt, 3% copper, 3% and 1.5% niobium [...], subjected to the quenching magnetic and aging under the same conditions as those specified in the at least two examples provides an anisotropic magnetic material having the following properties: Remanence (brr)=11,500 Gaussian. (Bh)=4.55 × 10=Gaussian oersted and coercive force (an HO - - - - 770 oersted. Finally, in a fourth exemplary embodiment of the invention, an iron-based alloy to same aluminum contents, a nickel, a cobalt, copper, tantalum and niobium that in the previous example, and further containing 1% titanium, subjected to the quenching magnetic and aging specified above, provides an anisotropic magnetic material having the following properties: [...] (brr)=10,800 Gaussian, (the BH) Gaussian oersted=4.05 × 10, and coercive force (HCs)=790 oersted. In the table below be other typical examples of compositions and properties according to the invention. In each case, the has' the Li PGCs was cast in a sand mold, cooled 1300° 600° C. C. one average rate of 1.1 °C. per second in a magnetic field of 3000 oersted, and then again heated to 585° C during ri4 hours. UT AF-lo and 7.5 or coagent Cul (the BH) 3 5, 3 3 brr + 75o 975o.... t/10g 3,o 70o 7ço 78o an HO

1° anisotropic permanent magnet in a magnetic iron-based alloy, characterized in that it contains 6 to 11% aluminum, 10 to 20% nickel, 30% of LFI to cobalt, 0 to 10% niobium, 0.5 to 12% tantalum, 0 to 7% 0 to 5% copper and titanium.

2° embodiments of the magnet specified under 1 degrees, which may have the following features taken separately or. according to the various possible combinations: a. its tantalum content does not exceed 10%; andb. Its tantalum content is less than 8%; C.. It also contains small amounts of one or more of the following: tungsten, chromium, molybdenum, vanadium alloy, [...], the calcium, cerium and silicon; D.. The crystal orientation is predominant in the direction (100).

3° magnet manufacturing method such as specified by 1° e. characterized in that the magnetic [...] is cast into a mold and solidified under conditions such that heat is taken from that substantially in a single direction that is parallel to that of the desired magnetic axis, and subjected, during cooling, in an area of temperature from a temperature higher than that corresponding to the Curie point and about fi00° C, at a magnetic field of same direction as recited above, and finally aged àfi00° c or to about 600° C..

4° anisotropic permanent magnet rotor by the method specified under 3 degrees; characterized in that it is finally magnetized in the direction of the. magnetic field used during cooling. Company [...]: N. V PHILLIPS' [...]. Proxy: J. a GASA [...] (office of ARA. [...] young!" Lice ' sale booklets, to address the I W m [...] rev, national, 27, street of the agreement, bets (!5).