英语词汇“troostite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

　

单词	troostite
释义	troostite troost·ite T0377600 (tro͞o′stīt′)n. A white or colored crystalline mineral, a variety of willemite, in which the zinc is partly replaced by manganese. [After Gerard Troost (1776-1850), Dutch-born American geologist.] troostite (ˈtruːstaɪt) n (Minerals) a reddish or greyish mineral that is a variety of willemite in which some of the zinc is replaced by manganese[C19: named after Gerard Troost (died 1850), US geologist] Troostite Troostite a structural component of steel and cast iron; a highly dispersed variety of pearlite, namely, a eutectoid mixture of ferrite and cementite. Troostite was named in honor of the French scientist L. J. Troost (1825–1911). It is formed as a result of the decomposition of austenite at temperatures below 600°C. The interlaminar distance in troostite is less than 0.1 micrometer. Troostite is harder than either pearlite or sorbite. The laminar structure of troostite, with a fan-shaped arrangement of the layers, may be observed using electron microscopy. Dark segments of troostite on a background of light fields of martensite are visible under an optical microscope. REFERENCES Guliaev, A. P. Termicheskaia obrabotka stali, 2nd ed. Moscow, 1960. Bunin, K. P., and A. A. Baranov. Metallografia. Moscow, 1970.
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