- #1
sparkle123
- 175
- 0
In the Body-centered-cubic (BCC) unit cell which types of holes (interstices) are there? (tetrahedral, octahedral, or cubic) How many of each type?
Thanks!
Thanks!
Body-centered-cubic # and types of holes?
- Thread starter sparkle123
- Start date
-
- Tags
- Holes
In summary, there is a discussion about the types of holes (interstices) present in the Body-centered-cubic (BCC) unit cell, specifically whether they are tetrahedral, octahedral, or cubic. The conversation mentions that online literature lists conflicting information about the type of holes, with some sources saying tetrahedral, cubic, or both tetrahedral and octahedral. The conversation also includes links to images and websites that may provide clarification on the issue.
- #2
berkeman
Mentor
- 66,994
- 19,794
sparkle123 said:
What do you think? What would your answers be and why?
http://www.members.tripod.com/~eppe/jpgs/bodcubic.jpg
- #3
sparkle123
- 175
- 0
They look like octahedral holes to me, but online literature says tetrahedral OR cubic OR tetrahedral and octahedral.
MEGACONFUSION
MEGACONFUSION
- #4
berkeman
Mentor
- 66,994
- 19,794
Nuts, my image source went away. I got it from Google Images, so here's another:
http://www.ul.ie/~walshem/fyp/Bcc%20unit.gif
[PLAIN]http://www.ul.ie/~walshem/fyp/Bcc%20unit.gif
You might try browsing through some Google Images for Body Centered Cubic, to see if the images help to show the shape of the spaces better...
http://www.ul.ie/~walshem/fyp/Bcc%20unit.gif
[PLAIN]http://www.ul.ie/~walshem/fyp/Bcc%20unit.gif
You might try browsing through some Google Images for Body Centered Cubic, to see if the images help to show the shape of the spaces better...
Last edited by a moderator:
- #5
berkeman
Mentor
- 66,994
- 19,794
sparkle123 said:
Can you post the links to the conflicting online sources? Thanks.
- #6
berkeman
Mentor
- 66,994
- 19,794
BTW, this website looks promising, but I'm not able to run the animations here at work (the Active-X control is not being allowed past our firewall). See if it helps you?
http://www.chm.davidson.edu/vce/crystals/index.html
.
http://www.chm.davidson.edu/vce/crystals/index.html
.
1. What is a body-centered-cubic (BCC) structure and where is it commonly found?
A body-centered-cubic structure is a type of crystal lattice structure in which atoms are arranged in a cubic shape with one atom at each corner of the cube and one atom at the center. This structure is commonly found in metals such as iron, chromium, and tungsten.
2. How many atoms are in a unit cell of a BCC structure?
There are two atoms in a unit cell of a BCC structure, one at each of the eight corners of the cube and one at the center of the cube.
3. What are the types of holes present in a BCC structure?
The two types of holes present in a BCC structure are octahedral holes and tetrahedral holes. Octahedral holes are located at the center of each face of the unit cell, while tetrahedral holes are located at the center of each edge of the unit cell.
4. How do the sizes of octahedral and tetrahedral holes compare in a BCC structure?
The size of octahedral holes is larger than the size of tetrahedral holes in a BCC structure. This is because octahedral holes are surrounded by eight atoms, while tetrahedral holes are surrounded by four atoms.
5. What is the significance of the types of holes in a BCC structure?
The types of holes in a BCC structure play a crucial role in determining the physical and mechanical properties of the material. These holes can affect the diffusion of atoms, the formation of defects, and the ability of the material to deform under stress.
Similar threads
-
Biology and Chemistry Homework Help
-
Classical Physics
Engineering
Bravais lattice from lattice points
-
Engineering and Comp Sci Homework Help
-
Special and General Relativity
-
Chemistry
-
Atomic and Condensed Matter
-
Biology and Chemistry Homework Help