Showing papers on "Amorphism published in 1981"
TL;DR: Sulfamethoxazole was microencapsulated with cellulose acetate phthalate and talc, colloidal silica, or montmorillonite clay by a spray-drying technique and exhibited polymorphic transformation, which occurred in the alkaline suspension medium.
46 citations
Patent•
3 Apr 1981
TL;DR: In this article, a transformer iron core was converted into an amorphous alloy for a transformer core by converting the alloy into an Fe-Si-B-C amorphized alloy having a specified composition.
Abstract: PURPOSE:To enhance the amorphism forming capacity and thermal stability of an amorphous alloy for a transformer iron core by converting the alloy into an Fe- Si-B-C amorphous alloy having a specified composition. CONSTITUTION:This amorphous alloy for a transformer iron core has a composition represented by formula I (where a+b+c+d=1, b=0.02-0.08, c=0.08-0.17 and d=0.01-0,08). This alloy is more easily made amorphous as compared to an Fe-B-C alloy, and it is superior to the Fe-B-C alloy in thermal stability. This alloy has a higher crystallization temp., undergoes a much smaller change in the coercive force with the passage of time, e.g., at 140 deg.C, and is thermally stable. On the othr hand, the saturation magnetic flux density is hardly lowered, and the addition of Si results in enhanced exciting characteristics, so this alloy is advantageous as a transformer iron core material.
6 citations