What makes diamond so excellent for drilling?


by PippaBG
Tags: bonds, diamond, drilling, drills, material
PippaBG
PippaBG is offline
#1
Jan5-10, 07:17 AM
P: 1
I know about the strong covelant bonds, but just why is diamond so much better than any other material for drilling?
Phys.Org News Partner Physics news on Phys.org
A 'quantum leap' in encryption technology
Using antineutrinos to monitor nuclear reactors
Bake your own droplet lens
Rajini
Rajini is offline
#2
Jan5-10, 08:13 AM
P: 598
It is difficult to say precisely!!
As far as i know the main property of diamond is hardness, which makes it essential for the using in drilling tools.
xxChrisxx
xxChrisxx is offline
#3
Jan5-10, 09:31 AM
P: 2,032
Very hard material, meaning you can drill other hard materials. Only the high wear surfeces are coated in it.

Hard material + soft drillbit = ruined drillbit

Andy Resnick
Andy Resnick is offline
#4
Jan5-10, 05:13 PM
Sci Advisor
P: 5,468

What makes diamond so excellent for drilling?


Quote Quote by PippaBG View Post
I know about the strong covelant bonds, but just why is diamond so much better than any other material for drilling?
That's a good question- material properties like 'hardness', 'toughness', and 'strength' are difficult to predict. Diamond appears to be very hard but very brittle- see for example

http://www.lbl.gov/ritchie/Library/P...iamond_APL.pdf

and

http://www.sciencedirect.com/science...ef6c890ddbe287


I suspect this relates to the rate a diamond bit must be replaced. I'm not sure it is 'better than any other material'.
diazona
diazona is offline
#5
Jan5-10, 05:34 PM
HW Helper
P: 2,156
Let's see... for drilling, you're basically trying to get the drill bit to scratch away the material you're drilling into, and not the other way around. Diamond is better at scratching (and harder to scratch away itself) than any other natural material. But as for the microscopic-level physical explanation of that property? I'd imagine it has a lot to do with the tetrahedral lattice, which is generally a very strong structure... but I couldn't say much in detail.


Register to reply

Related Discussions
Unconventional Drilling Mechanical Engineering 5
Drilling PCB using Microcontroller Electrical Engineering 3
Drilling was never too fun. Introductory Physics Homework 4
Alaskan drilling General Discussion 7