材料期刊网

The isothermal section at 700 degrees C in the Go-rich ternary Gd-Co-B system was determined by means of x-ray diffraction. In this range, nine ternary borides were observed: Gd3Co13B2, GdCo4B, Gd3Co11B4, Gd(2)Go(7)B(3), GdCo3B2 Gd2Co14B, GdCo12B6, GdCo4B4, GdGo(2)B(2). This isothermal section at 700 degrees C is similar to other isothermal sections found in the literatures, but they do not include the compounds Gd3Co13B2 and Gd2Co14B. The first five borides are members of the homologous series Gdm + nCo5m + 3nB2n, which is formed by alternative stacking of m layers of GdCo5 with n layers of GdCo3B2 along the c-axis. (C) 2000 Elsevier Science S.A. All rights reserved.