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单词 cementite
释义

Definition of cementite in English:

cementite

noun sɪˈmɛntʌɪtsəˈmɛnˌtaɪt
mass nounMetallurgy
  • A hard, brittle iron carbide present in cast iron and most steels.

    〔冶〕渗碳体,碳化铁

    Example sentencesExamples
    • The harder pearlite is comprised of alternating thin layers or shells of ferrite and cementite, a very hard substance.
    • Fig.8 shows the structure of a steel hardened from 760°C, consisting of particles of cementite dispersed in a matrix of martensite.
    • It has been shown how the difference in solubility of carbon in austenite and ferrite leads to the familiar ferrite / cementite aggregates in plain carbon steels.
    • The equilibrium diagram does not tell us what form is taken by the ferrite or cementite ejected from the austenite on cooling.
    • This cementite is hard (Brinell hardness 600 +), brittle and brilliantly white.

Definition of cementite in US English:

cementite

nounsəˈmɛnˌtaɪtsəˈmenˌtīt
Metallurgy
  • A hard, brittle iron carbide present in cast iron and most steels.

    〔冶〕渗碳体,碳化铁

    Chemical formula: Fe₃C

    Example sentencesExamples
    • It has been shown how the difference in solubility of carbon in austenite and ferrite leads to the familiar ferrite / cementite aggregates in plain carbon steels.
    • The equilibrium diagram does not tell us what form is taken by the ferrite or cementite ejected from the austenite on cooling.
    • The harder pearlite is comprised of alternating thin layers or shells of ferrite and cementite, a very hard substance.
    • Fig.8 shows the structure of a steel hardened from 760°C, consisting of particles of cementite dispersed in a matrix of martensite.
    • This cementite is hard (Brinell hardness 600 +), brittle and brilliantly white.
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更新时间:2025/7/4 15:23:56