RSS

Monday, December 13, 2010

Aluminum Nitride (AlN) for heat sink?


Did you know Aluminum Nitride is well used for "heat sink?"

Aluminum Nitride(AlN) is a good insulator but high in thermal conductivity.
It is very popular for using as "heat sink."

It is also used for PCB boards as well from the same reason.

For high heating energy sources, such as power electric devices or LEDs, AlN plays a big role.

Do you know how Aluminum Nitride is made?

AlN is made by sintering.
The thermal characteristic of AlN is differed by how they were sintered.

These days, the sintering technology for AlN has been drastically advanced.
The thermal conductivity of AlN has been improved very much.

It is very significant to control the process of sintering, however, it is a critical issue for the manufacturer to monitor the distribution of thermal conductivity within the product.

But ordinal methods could NOT evaluate the distribution of AlN in details.

Thermal Microscope (TM3) has a spatial resolution of 3um and able to evaluate the distribution of thermal conductivity of the samples in 2D.

The following is the result of AlN which was measured with TM3.

Aluminum Nitride (AlN): 282 W/mK

We also noticed that the thermal conductivity varies within the sample.
It had a range of 219 to 318 W/mK

For details, please take a look at
Journal of the Ceramic Society of Japan 116[12] 1260-1264 2008

We do testing service for AlN using Thermal Microsope (TM3).
If you are interested, please feel free to contact us.

eigyo@bethel.co.jp

Junichi

9 comments:

Glenn Jacob said...

Thanks a lot for sharing this information on your blog!!
Nice and very informative blog!!
Aluminum Heat Sinks

mandi indars said...

I should thank you for writing on aluminum nitride, very useful information you have given through this blog regarding education sector. I will visit again to get more information.

alumina substrate

bradshawjohn said...

Your blog is very useful and provide tremendous facts. It is going to change the way one thing by a sharp angle. I wonder if you write about gadgets also. Keep up the good work ahead.

thin ceramic substrates

bradshawjohn said...

I am going to apply all tips that you have mentioned in your post about aluminum nitride, they could be helpful for anyone.

aluminum nitride

Kathleen O'Connor said...

I must say that you are a wonderful blogger. Your blog simply picturize everything. I wonder if you write next post soon so that I would again have some healthy stuff to read.

optical surface roughness metrology service

mike said...

I’ve been reading numerous articles on this topic but found this one uniquely written. Thanks for sharing

wafer dicing machine

mike said...

Having a superb time reading your blog articles. you know what really your readers want. Keep it up good work.

aluminum nitride machining

bradshawjohn said...

Your blog is very useful and provide tremendous facts. It is going to change the way one think by a sharp angle. I wonder if you write on gadgets also.
Aluminum Nitride substrates

mandi indars said...

Your blog left me warmhearted. And also the matter was expressed beautifully. I am thankful to you on behalf of all others who cannot read this blog.
lapped alumina

Post a Comment