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From: boB <boB@K7IQ.com>
Newsgroups: sci.electronics.design
Subject: Re: OT: Marcury has a layer of diamond 10 miles thick, NASA spacecraft finds
Date: Thu, 01 Aug 2024 13:33:11 -0700
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On Wed, 31 Jul 2024 15:00:49 -0700, John Larkin
<jjlarkin@highlandtechnology.com> wrote:

>On Wed, 31 Jul 2024 13:04:54 -0700, boB <boB@K7IQ.com> wrote:
>
>>On Wed, 31 Jul 2024 12:38:15 +1000, Bill Sloman <bill.sloman@ieee.org>
>>wrote:
>>
>>>On 31/07/2024 3:46 am, john larkin wrote:
>>>> On Tue, 30 Jul 2024 10:46:45 GMT, Jan Panteltje <alien@comet.invalid>
>>>> wrote:
>>>> 
>>>>> Mercury has a layer of diamond 10 miles thick, NASA spacecraft finds
>>>>> https://www.space.com/mercury-diamond-layer-10-miles-thick-nasa-messenger#main
>>>>>
>>>>> Now there is an incentive to go!
>>>> 
>>>> Diamond, like gold, is valuable because it's rare. Accessing cubic
>>>> miles of diamonds would trash its value.
>>>
>>>Wrong. Diamond is light, hard, strong and has very high thermal 
>>>conductivity. You can buy synthetic diamond heat-sinks right now.
>>>
>>>https://www.msesupplies.com/products/diamond-heat-sink-thermal-conductivity-1500w-m-k?variant=39601902846010
>>>
>>>-- 
>>>Bill Sloman, Sydney
>>
>>
>>Would love to have some diamond (man-made is fine)  heat sink
>>insulator material !  
>>
>>boB
>
>
>If you mean an insulator between a power transistor and an aluminum or
>copper heat sink, a thin aluminum nitride insulator would be almost as
>good as diamond. Or hard anodize.
>
>Really using the heat sink would require lateral heat spreading,
>namely a big thick slab of diamond.

John, this would be used as a lower thermal resistance insulated
interface from case to heat sink.  I wonder if you still need to use
the white bird shit on that interface ?

boB