Qhov sib txawv tseem ceeb ntawm eutectic thiab eutectoid cov tshuaj tiv thaiv yog tias nyob rau hauv cov tshuaj tiv thaiv eutectic, cov kua hloov mus rau hauv ob theem khoom tib lub sijhawm thaum nyob rau hauv cov tshuaj tiv thaiv eutectoid, cov khoom hloov pauv mus rau ob theem khoom tib lub sijhawm.
Eutectic thiab eutectoid cov tshuaj tiv thaiv yog tshuaj lom neeg cov tshuaj tiv thaiv uas piav qhia txog kev hloov pauv ntawm ib theem mus rau lwm theem raws li qhov kev hloov pauv ntawm qhov kub thiab txias.
Yuav ua li cas yog Eutectic Reaction?
Cov tshuaj tiv thaiv Eutectic yog cov tshuaj tiv thaiv uas cov kua hloov mus rau hauv ob theem khoom tib lub sijhawm thaum txias. Ib qho eutectic system yog homogenous sib xyaw ntawm cov khoom uas tuaj yeem yaj los yog khov ntawm qhov kub thiab txias uas qis dua qhov melting point ntawm cov khoom hauv qhov sib tov. Qhov tseeb, lub sij hawm eutectic kub piav qhia qhov qis tshaj qhov ua tau melting kub rau txhua qhov sib xyaw ua ke uas koom nrog hauv kev tsim cov sib tov.
Daim duab 01: Txawv Eutectic Structures
Thaum cua sov ib qho sib xyaw eutectic, cov lattice ib feem hauv qhov sib tov yuav yaj ua ntej ntawm qhov kub ntawm eutectic. Nyob rau hauv sib piv, raws li txias lub eutectic system, txhua yam nyob rau hauv lub sib tov nyhav rau solidify, tsim lub lattice ntawm cov khoom ntawm ib tug txawv kub. Qhov no solidification tshwm sim kom txog thaum tag nrho cov ntaub ntawv los ua solidification. Feem ntau, eutectic system muaj ob yam khoom; Yog li, ntawm eutectic kub, cov kua hloov mus rau hauv ob theem khoom nyob rau tib lub sijhawm thiab nyob rau tib lub sijhawm. Yog li ntawd, peb tuaj yeem sau npe hom tshuaj tiv thaiv no raws li qhov tshwm sim peb-theem. Qhov no yog ib hom tshuaj tiv thaiv theem. E.g. ib tug kua solidifies, tsim ib tug alpha thiab beta khoom lattices. Ntawm no, cov theem ua kua thiab cov theem khoom yog nyob rau hauv equilibrium nrog ib leeg; thermal equilibrium.
Yuav Ua Li Cas Eutectoid Reaction?
Ib cov tshuaj tiv thaiv eutectoid yog cov tshuaj tiv thaiv tshuaj uas muaj cov khoom hloov pauv mus rau ob theem khoom nyob rau tib lub sijhawm thaum txias. Qhov no yog peb-theem cov tshuaj tiv thaiv vim tias ib theem ntawm cov teeb meem hloov mus rau ob theem ntawm cov teeb meem. Nws yog ib qho tshuaj tiv thaiv isothermal uas tsim ob theem sib xyaw ua ke. Tus naj npawb ntawm cov khib nyiab hauv cov khoom sib tov yog nyob ntawm tus naj npawb ntawm cov khoom hauv lub cev.
Daim duab 02: Hlau yog tsim los ntawm Eutectoid Reactions
Ib qho tshuaj tiv thaiv eutectoid tshwm sim ntawm qhov taw tes eutectoid. Cov tshuaj tiv thaiv no zoo ib yam li cov tshuaj tiv thaiv eutectic; qhov sib txawv yog nyob rau hauv cov theem uas hloov. Eutectoid cov tshuaj tiv thaiv hlau yog ib qho piv txwv ntawm cov tshuaj tiv thaiv no. Cov qauv eutectoid ntawm hlau muaj lub npe tshwj xeeb: pearlite. Pearlite yog sib tov ntawm ob theem; ferrite thiab cementite. Cov qauv no tshwm sim hauv ntau qib ntawm cov hlau, uas yog cov hlau alloy thiab carbon.
Qhov txawv ntawm Eutectic thiab Eutectoid Reaction yog dab tsi?
Eutectic thiab eutectoid cov tshuaj tiv thaiv yog peb theem kev tshwm sim uas ib theem ntawm cov teeb meem hloov mus rau ob theem ntawm cov teeb meem. Qhov sib txawv tseem ceeb ntawm eutectic thiab eutectoid cov tshuaj tiv thaiv yog tias nyob rau hauv cov tshuaj tiv thaiv eutectic, cov kua hloov mus rau hauv ob theem khoom nyob rau tib lub sij hawm whereas nyob rau hauv ib tug eutectoid cov tshuaj tiv thaiv, ib tug khoom hloov mus rau hauv ob qho tib si theem nyob rau tib lub sij hawm.
Hauv qab infographic nthuav tawm qhov sib txawv ntawm eutectic thiab eutectoid cov tshuaj tiv thaiv hauv daim ntawv teev npe.
Summary – Eutectic vs Eutectoid Reaction
Eutectic thiab eutectoid cov tshuaj tiv thaiv yog peb theem kev tshwm sim uas ib theem ntawm cov teeb meem hloov mus rau ob theem ntawm cov teeb meem. Qhov sib txawv tseem ceeb ntawm eutectic thiab eutectoid cov tshuaj tiv thaiv yog tias nyob rau hauv cov tshuaj tiv thaiv eutectic, cov kua hloov mus rau hauv ob theem khoom nyob rau tib lub sij hawm whereas nyob rau hauv ib tug eutectoid cov tshuaj tiv thaiv, ib tug khoom hloov mus rau hauv ob qho tib si theem nyob rau tib lub sij hawm.
