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4th October 2010 15:12 #1, .
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4th October 2010 15:20 #2
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4th October 2010 16:07 #3
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- ( , ). http://en.wikipedia.org/wiki/Hard_disk_platter
, - .The material of the main magnetic medium layer is usually a cobalt-based alloy.Last edited by enkov; 4th October 2010 at 16:18.
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4th October 2010 16:15 #4
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4th October 2010 16:23 #5
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Anywhere from one to seven recordable platters are contained within a modern Hard Disk Drive's metallic enclosure. Hard Disk Drive platters are perfectly circular disks made from either an aluminium alloy or a more recently a glass ceramic substrate which is a ceramic disk suspended in a glass outer shell. Onto the surfaces of a disk's platter is laid a thin layer of a magnetically sensitive coating called the recording medium, in modern drives the mixture is a complex amalgam of different materials such as cobalt chromium platinum boron (CoCrPtB) and other such rare metals.
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the predominant technique involves the laminating of magnetic and non-magnetically charged metals such as chromium, cobalt, platinum and alloys of similar
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"" , . - .Precautions
Main article: Cobalt poisoning
Cobalt is an essential element for life in minute amounts. The LD50 values soluble cobalt salts has been estimated to be between 150 and 500 mg/kg. Thus, for a 100 kg person the LD50 would be about 20 grams.[46]
After nickel and chromium, cobalt is a major cause of contact dermatitis and is considered carcinogenic.[47] In 1966, the addition of cobalt compounds to stabilize beer foam in Canada led to cardiomyopathy, which came to be known as beer drinker's cardiomyopathy.[48]The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge. ― Stephen Hawking
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4th October 2010 16:19 #6
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4th October 2010 17:00 #7
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4th October 2010 17:03 #8
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4th October 2010 17:05 #9
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The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge. ― Stephen Hawking
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4th October 2010 21:37 #10
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4th October 2010 21:56 #11
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4th October 2010 22:08 #12
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4th October 2010 22:58 #13
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Last edited by enkov; 5th October 2010 at 00:00.
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4th October 2010 22:54 #14
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NiOOH Madboy BozoMaster Bucket tony HillyBilly tedych Spellcaster MrShadow nbozhinov degman tonich
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4th October 2010 23:00 #15
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NiOOH Madboy BozoMaster Bucket tony HillyBilly tedych Spellcaster MrShadow nbozhinov degman tonich
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5th October 2010 01:16 #16
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5th October 2010 06:17 #17
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It's a man's world, but it would be nothing
without a woman or a girl.
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5th October 2010 12:47 #18
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Asus Crosshair VI Hero|Ryzen 5900X|G.Skill TridentZ 4x8GB DDR4 3600@3733|Water Cooling|SSD Samsung 970Pro 512GB|3xCrusial MX500 RAID0|Asus DRW-24B3LT|Asus ROG Strix RTX 4070 Ti in transit...|X-Fi Titanium Pro|Seasonic Prime Ti. 750W|Logitech G19+Performance MX|Acer XF270HUA|Chieftec CA-01B-B-SL
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5th October 2010 14:34 #19My last Tower: [24/7] [PXP35] [E6500@4026MHz] [ST@1500rpm] [Corsair 8GB DDR2] [GTX280 1GB OC] [Black Diamond 850W] [VelociRaptor 600GB]
ITX rig 10 years later: [24/7] [B450M ITX] [Ryzen 5 3600@4400MHz] [Corsair 32GB 3600MHz] [KFA2 RTX3060Ti 8GB] [Corsair CX550SF] [1TB WD Black SN850]




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