Qhov sib txawv ntawm ntug thiab ntsia hlau dislocation yog tias ntug dislocation yog ib hom kab tsis xws luag uas tshwm sim thaum ib nrab-dav hlau ntawm atoms tshwm sim nyob rau hauv nruab nrab ntawm cov siv lead ua lattice whereas cov ntsia hlau dislocation kuj yog ib hom. ntawm kab tsis xws luag tab sis nws tshwm sim thaum lub dav hlau ntawm atoms nyob rau hauv lub siv lead ua lattice taug ib txoj kev helical nyob ib ncig ntawm lub dislocation kab.
Crystallographic defects yog qhov tsis zoo ntawm cov qauv rov ua dua ntawm cov iav siv lead ua. Tsis tas li ntawd, cov teeb meem no cuam tshuam cov qauv tsis tu ncua ntawm cov lattice. Kab defects yog ib daim ntawv ntawm crystallographic defects nyob rau hauv uas qhov tsis xws luag tshwm sim nyob rau hauv ib tug dav hlau ntawm atoms nyob rau hauv nruab nrab ntawm cov siv lead ua lattice. Muaj ob hom kab tsis xws luag; lawv yog ntug dislocation thiab ntsia hlau dislocation, qhov twg atoms ntawm lattice muaj nyob rau hauv ib tug misaligned qauv.
Edge Dislocation yog dab tsi?
Ntug dislocation yog ib hom kab tsis xws luag hauv cov lattices uas qhov tsis xws luag tshwm sim vim muaj lub dav hlau ntxiv ntawm atoms lossis vim poob ntawm ib nrab ntawm lub dav hlau ntawm atoms nyob nruab nrab ntawm lub daim kab xev. Qhov kev tsis zoo no ua rau cov dav hlau nyob ze ntawm atom khoov ntawm qhov dislocation. Yog li ntawd, cov dav hlau nyob ib sab ntawm atoms tsis ncaj. Lub cheeb tsam uas qhov tsis xws luag tshwm sim yog lub hauv paus dislocation los yog cheeb tsam.
Daim duab 01: Ntug Dislocation
Thaum peb siv kev ntxhov siab rau ntawm lub pob zeb uas muaj qhov tsis xws luag, thaj chaw dislocation txav mus rau qhov sib npaug ntawm cov kev ntxhov siab. Txawm li cas los xij, kev txav ntawm thaj av uas ib nrab ntawm lub dav hlau ntawm atoms tsawg heev thaum piv nrog thaj av uas lwm ib nrab ntawm lub dav hlau ntawm atoms tsis tuaj. Ntug dislocations tuaj yeem glide hauv txhua lub dav hlau.
Screw Dislocation yog dab tsi?
Screw dislocation yog lwm hom kab mob uas qhov tsis xws luag tshwm sim thaum lub dav hlau ntawm atoms nyob rau hauv cov siv lead ua lattice taug txoj kev helical nyob ib ncig ntawm txoj kab dislocation. Kev pom cov yam tsis xws luag hauv cov muaju yog qhov nyuaj. Tsis zoo li nyob rau hauv ntug dislocation, thaum peb siv kev ntxhov siab rau ntawm lub pob zeb uas muaj qhov tsis xws luag, thaj chaw dislocation txav mus rau qhov kev taw qhia ntawm kev ntxhov siab.
Daim duab 02: Ntsia Hlau Dislocations
Txawm li cas los xij, qhov kev ntxhov siab tshwm sim los ntawm cov ntsia hlau dislocation yog qhov sib piv tsis yooj yim dua li ntug dislocation. Screw dislocations tuaj yeem glide hauv txhua lub dav hlau.
Qhov txawv ntawm Ntug thiab Ntsia Hlau Dislocation yog dab tsi?
Ntug dislocation yog ib daim ntawv ntawm kab tsis xws luag hauv cov siv lead ua lattices uas qhov tsis xws luag tshwm sim vim muaj lub dav hlau ntxiv ntawm atoms lossis vim poob ntawm ib nrab ntawm lub dav hlau ntawm atoms hauv nruab nrab ntawm lub daim kab xev. Thaum peb siv kev ntxhov siab rau ntawm lub pob zeb uas muaj ntug dislocation, qhov chaw dislocation txav mus rau qhov sib npaug mus rau cov kev taw qhia ntawm kev ntxhov siab. Ntxiv mus, Edge dislocations tuaj yeem glide hauv txhua lub dav hlau.
Ntawm qhov tod tes, cov ntsia hlau dislocation yog ib hom kab mob uas qhov tsis xws luag tshwm sim thaum lub dav hlau ntawm atoms nyob rau hauv lub siv lead ua lattice taug qab txoj kev helical nyob ib ncig ntawm txoj kab dislocation. Thaum peb siv kev ntxhov siab rau ntawm lub pob zeb uas muaj qhov tsis xws luag, thaj chaw dislocation txav mus rau qhov kev taw qhia ntawm kev ntxhov siab. Tsis tas li ntawd, cov ntsia hlau dislocations tuaj yeem glide hauv txhua lub dav hlau. Qhov no yog qhov txawv ntawm ntug thiab ntsia hlau dislocation.
Summary – Ntug vs Screw Dislocation
kab tsis xws luag yog cov ntaub ntawv ntawm crystallographic defects. Muaj ob hom kev tsis xws luag xws li ntug dislocations thiab ntsia hlau dislocations. Qhov sib txawv ntawm ntug thiab ntsia hlau dislocation yog tias ntug dislocation tshwm sim thaum ib nrab-nav dav hlau ntawm atoms tshwm sim nyob rau hauv nruab nrab ntawm cov siv lead ua lattice whereas lub ntsia hlau dislocation tshwm sim thaum lub dav hlau ntawm atoms nyob rau hauv lub siv lead ua lattice taug qab ib tug helical txoj kev nyob ib ncig ntawm lub dislocation. kab.
