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Why FCC metals are more ductile than Bcc metals?
FCC has a higher packing efficiency and the slip planes are more closely packed than BCC. Infact BCC has more slip systems than FCC. But they are not as closely packed as FCC. For plastic deformation, we need atleast 5 independent slip systems. Both FCC and BCC have those. But the previously mentioned factor makes FCC more ductile than BCC.
What is the radius ratio of SC and Bcc and FCC?
Radius ratio of FCC is 1.0 and of BCC is 0.732
Why carbon is more in FCC iron when compared to BC iron even though FCC iron structure has less void space?
FCC Crystall structure have more number of interstices then BCC so FCC dissolve more carbon then BCC
What is the Kurdjumov Sachs orientation relationship?
•The Kurdjumov-Sachs (KS) relationship is specified as {110}bcc/{111}fcc, <111>bcc//<101>fcc. •These two differ by only a 5.6° rotation in the interface plane.
What are the possible values of h k l for fcc and Bcc crystals?
FCC : (h k l) must all be either odd or even BCC : sum h + k + l must be even. (Otherwise, an in between plane will cancel the reflection)
Which is more efficient body centered cubic or face centered cubic?
They are two of the cubic structures for crystals with atoms linked by ionic or covalent bonds. They are also known as BCC and FCC. Table salt, NaCl, and Silicon, for example, assume a FCC structure. For illustrations, please go to the related link.
What is an allotrope for potassium?
how much is the heat of transformation ptassium(bcc) to potassium (fcc)? i.e., delta H?
What is crystals in science terms?
Crystals are those substances which possess Atoms arranged in a reagular manner.They can be either BCC, FCC or SC.
What is difference between FCC and diamond?
One is a federal commission and the other is a diamond. Unless you're referring to crystal structure: "FCC" is the abbreviation for face-centered-cubic, "BCC" is body-centered-cubic. Diamond is just cubic, which may seem bad, but this crystal structure is nearly indestructible.
How do you calculate density of compounds?
p = n x Mr / Vc x NAwhere n is the atoms/unit cell e.g. fcc packing n = 4 and for bcc packing n = 2Mr is the Atomic Mass in g/molVc is the volume/unit cell cm3 = a3 where a can be found by the radius of the atom and the packing used. e.g in bcc packing it is "a = 4r/1.732" . In Fcc packing it is "a= sin (4r)" or "a = cos (4r)"NA is avorgados constant, = 6.023 x1023
How do you calculate theoretical density of compound?
p = n x Mr / Vc x NAwhere n is the atoms/unit cell e.g. fcc packing n = 4 and for bcc packing n = 2Mr is the atomic mass in g/molVc is the volume/unit cell cm3 = a3 where a can be found by the radius of the atom and the packing used. e.g in bcc packing it is "a = 4r/1.732" . In Fcc packing it is "a= sin (4r)" or "a = cos (4r)"NA is avorgados constant, = 6.023 x1023
What does FCC and USP signify when purchasing chemicals?
USP is "United States Pharmacopeia". FCC is probably "food chemicals codex". They both mean that the chemical in question conforms to the purity standards of the document specified. What that means PRECISELY you'd have to look up in said document, but in both cases it means roughly "this compound is pure enough to use in making drugs (USP) or foods (FCC)." On the purity scale, USP/FCC is usually somewhat less than spectroscopy grade, but better than lab grade or reagent grade.
