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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Re: OT: Marcury has a layer of diamond 10 miles thick, NASA spacecraft finds
Date: Fri, 02 Aug 2024 04:50:49 GMT
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On a sunny day (Thu, 01 Aug 2024 13:33:11 -0700) it happened boB
<boB@K7IQ.com> wrote in <06snajlsbbf7iaeioo8tivbn0ncgk633fc@4ax.com>:

>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 ?

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