单词 | eutectic point |
释义 | > as lemmaseutectic point That is a eutectic; of or pertaining to a eutectic or its liquefaction or solidification; eutectic point, the melting-point of a eutectic, or the point representing it in a constitutional diagram. ΚΠ 1884 F. Guthrie in London, Edinb. & Dublin Philos. Mag. 5th Ser. 17 462 The main argument..hinges upon the existence of compound bodies, whose chief characteristic is the lowness of their temperatures of fusion. This property..may be called Eutexia, the bodies possessing it eutectic bodies or eutectics (εὖ τήκειν)... It will, however, perhaps be better to make the term more useful by limiting its application. I shall use it..for bodies made up of two or more constituents..in such proportion to one another as to give to the resultant compound body..a lower temperature of liquefaction than that given by any other proportion. 1885 Nature 5 Nov. 21/1 When metals do unite in atomic ratios the alloy produced is never eutectic, i.e., having a minimum solidifying-point. Thus pure cast-iron is..an eutectic alloy of carbon and iron. 1902 [see sense B. 1]. 1910 Encycl. Brit. I. 705/2 The two sloping lines cutting at the eutectic point are the freezing-point curves of alloys. 1911 Encycl. Brit. XXI. 330/1 This mixture, which is known as the eutectic mixture, has the lowest melting-point of any which can be formed from these minerals. 1950 Engineering 16 June 672/2 Fusible plugs of eutectic alloys. 1967 A. H. Cottrell Introd. Metall. xvi. 253 This is the ternary eutectic point at which the liquid is in equilibrium with all three solids A, B and C. < as lemmas |
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