{"id":66,"date":"2024-03-30T13:34:49","date_gmt":"2024-03-30T05:34:49","guid":{"rendered":"http:\/\/siliconcarbideceramic.net\/?p=66"},"modified":"2024-07-15T20:47:52","modified_gmt":"2024-07-15T12:47:52","slug":"%ec%b2%9c%ec%b2%b4-%eb%a7%9d%ec%9b%90%ea%b2%bd%ec%9a%a9-%ec%8b%a4%eb%a6%ac%ec%bd%98-%ec%b9%b4%eb%b0%94%ec%9d%b4%eb%93%9c-%eb%af%b8%eb%9f%ac-%ec%86%8c%ec%9e%ac","status":"publish","type":"post","link":"https:\/\/siliconcarbideceramic.net\/ko\/silicon-carbide-mirror-material-for-astronomical-telescopes\/","title":{"rendered":"\uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc - \ucc9c\uccb4 \ub9dd\uc6d0\uacbd\uc6a9 \ubbf8\ub7ec \uc18c\uc7ac"},"content":{"rendered":"<p>\uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc(\uce74\ubcf4\ub8ec\ub364\uc774\ub77c\uace0\ub3c4 \ud568)\ub294 \uc2e4\ub9ac\ucf58\uacfc \ud0c4\uc18c \uc6d0\uc790\ub85c \uad6c\uc131\ub41c \ubb34\uae30 \ud654\ud569\ubb3c\ub85c, \uc790\uc5f0\uacc4\uc5d0\uc11c\ub294 \ubaa8\uc774\uc0ac\ub098\uc774\ud2b8 \ud615\ud0dc\ub85c \ubc1c\uacac\ub418\uba70, 1893\ub144\ubd80\ud130 \uc5f0\ub9c8\uc7ac\ub85c \uc0ac\uc6a9\ud558\uae30 \uc704\ud574 \ub300\ub7c9 \uc0dd\uc0b0\ub418\uc5b4 \uc654\ub2e4.<\/p>\n<p>SiC\ub294 70\uac00\uc9c0 \uc774\uc0c1\uc758 \uacb0\uc815 \ud615\ud0dc\ub85c \uc874\uc7ac\ud558\uba70, \uc54c\ud30c \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc(a-SiC)\uc640 \ubca0\ud0c0 \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc(b-SiC)\ub77c\ub294 \ub450 \uac00\uc9c0 \ub2e4\ud615\uccb4\ub85c \ubd84\ub958\ub41c\ub2e4. \uc2e4\ud5d8 \uc624\ucc28 \ubc94\uc704 \ub0b4\uc5d0\uc11c, \ub450 \ud615\ud0dc \ubaa8\ub450 \ucd5c\ub300 10 GPa\uc758 \uc555\ub825\uc5d0\uc11c \ub3d9\uc2dc\uc5d0 \ub179\ub294\ub2e4.<\/p>\n<h2>\uae30\uc6b8\uae30\uac00 \uc74c\uc218\uc785\ub2c8\ub2e4.<\/h2>\n<p>\uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \ub9e4\uc6b0 \ub2e8\ub2e8\ud558\uace0 \ubc00\ub3c4\uac00 \ub192\uc740 \uc18c\uc7ac\ub85c, \ub2e4\uc591\ud55c \uc6a9\ub3c4\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uc18c\uc7ac\ub294 \uc0ac\ud3ec, \uc5f0\uc0ad \ud720, \uc808\uc0ad \uacf5\uad6c, \uc790\ub3d9\ucc28 \ubd80\ud488 \ubc0f \uc790\ub3d9\ucc28\uc6a9 \ub0b4\ud654\uc7ac\uc640 \uac19\uc740 \uc81c\ud488\uc5d0\uc11c \ucc3e\uc544\ubcfc \uc218 \uc788\uc73c\uba70, \ub610\ud55c \ub192\uc740 \uacbd\ub3c4\uc640 \ub0ae\uc740 \uc5f4\ud33d\ucc3d \uacc4\uc218 \ub355\ubd84\uc5d0 \uc6a9\uad11\ub85c, \uac00\ub9c8 \ubc0f \ub0b4\ud654 \ub77c\uc774\ub2dd\uc758 \ub0b4\ud654\uc7ac\ub85c \uc0ac\uc6a9\ub420 \ubfd0\ub9cc \uc544\ub2c8\ub77c \ucc9c\ubb38 \ub9dd\uc6d0\uacbd\uc758 \uac70\uc6b8 \uc7ac\ub8cc\ub85c\ub3c4 \ud65c\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<p>\uc5d0\ub4dc\uc6cc\ub4dc \uad6c\ub4dc\ub9ac\uce58 \uc560\uce58\uc2a8\uc740 1891\ub144, \uc810\ud1a0\uc640 \ubd84\ub9d0 \ucf54\ud06c\uc2a4(\ud0c4\uc18c)\ub97c \ud63c\ud569\ud55c \ubb3c\uc9c8\uc744 \uc804\uae30\ub85c\uc5d0\uc11c \uac00\uc5f4\ud558\uc5ec \u201c\uce74\ubcf4\ub7f0\ub364\u201d\uc73c\ub85c \uc54c\ub824\uc9c4 \uccad\ud751\uc0c9 \ubb3c\uc9c8\uc744 \uc0dd\uc0b0\ud568\uc73c\ub85c\uc368 \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub97c \ucd5c\ucd08\ub85c \ub300\ub7c9 \uc0dd\uc0b0\ud588\ub2e4.\u201d<\/p>\n<p>5~8 GPa \ubc94\uc704\uc758 \uc555\ub825\uc5d0\uc11c \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\uc758 \uc6a9\uc735\uc5d0 \ub300\ud55c \uc5f0\uad6c \uacb0\uacfc, \uc5f0\uad6c \ub300\uc0c1\uc778 \ubaa8\ub4e0 \uc555\ub825 \uc870\uac74\uc5d0\uc11c \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \ub3d9\uc9c8 \uc6a9\uc735\uc744 \ubcf4\uc600\uc73c\uba70, \uadf8 \uc6a9\uc735 \uace1\uc120\uc758 \uae30\uc6b8\uae30\ub294 -44 \u00b1 4 K\/GPa\ub85c \uc74c\uc758 \uac12\uc744 \ub098\ud0c0\ub0c8\ub294\ub370, \uc774\ub294 \ubc00\ub3c4 \ud568\uc218 \uc774\ub860\uc774 \uc774\ub97c \uc815\ud655\ud558\uac8c \uc608\uce21\ud588\uc74c\uc744 \uc785\uc99d\ud558\ub294 \uc99d\uac70\uac00 \ub41c\ub2e4.<\/p>\n<h2>\uae30\uc6b8\uae30\uac00 \uc591\uc218\uc785\ub2c8\ub2e4<\/h2>\n<p>\uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc(SiC)\ub294 \ub6f0\uc5b4\ub09c \ud2b9\uc131\uc744 \uc9c0\ub2cc \ube44\uc0b0\ud654\ubb3c \uc138\ub77c\ubbf9 \uc18c\uc7ac\ub85c, \ub2e4\uc591\ud55c \uace0\uc628 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ub429\ub2c8\ub2e4. SiC\ub294 \uacbd\ub3c4\uac00 \ub192\uc744 \ubfd0\ub9cc \uc544\ub2c8\ub77c \uac15\ub3c4\ub3c4 \ub9e4\uc6b0 \ub6f0\uc5b4\ub098\uba70, \ub2e4\uacb0\uc815 \uccb4\uc758 \uc778\uc7a5 \uac15\ub3c4\ub294 \ucd5c\ub300 27 GPa\uc5d0 \ub2ec\ud569\ub2c8\ub2e4. \ub610\ud55c \uc6b0\uc218\ud55c \ud06c\ub9ac\ud504 \uc800\ud56d\uc131\uc744 \uac16\ucd94\uace0 \uc788\uc744 \ubfd0\ub9cc \uc544\ub2c8\ub77c \uc5f4\ud33d\ucc3d \uacc4\uc218\ub3c4 \ub0ae\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc774\uc0b0\ud654\uc138\ub968(CeO\u2082) \uc138\ub77c\ubbf9\uc740 \ubb3c\uc5d0\ub294 \ub179\uc9c0 \uc54a\uc9c0\ub9cc \uc6a9\uc735 \uc54c\uce7c\ub9ac \ubc0f \ucca0 \uc6a9\uc561\uc5d0\ub294 \uc6a9\ud574\ub418\uba70, \uace0\uc555 \ud658\uacbd\uc5d0\uc11c \ub0b4\ub9c8\ubaa8\uc131, \ub0b4\uc2dd\uc131, \ub0b4\ucda9\uaca9\uc131 \ubc0f \uc5f4\ud33d\ucc3d \uc800\ud56d\uc131\uc744 \uac16\ucd98 \ubaa8\ub4e0 \ucca8\ub2e8 \uad6c\uc870\uc6a9 \uc138\ub77c\ubbf9 \uc911 \uac00\uc7a5 \ub2e8\ub2e8\ud55c \uc7ac\uc9c8\ub85c, \uc6d0\uc790\ub85c \ubd80\ud488\uacfc \uac19\uc740 \uace0\uc628 \uc6a9\ub3c4\uc5d0 \uc0ac\uc6a9\ud558\uae30\uc5d0 \uc774\uc0c1\uc801\uc785\ub2c8\ub2e4.<\/p>\n<p>\uc77c\ubc18\uc801\uc73c\ub85c a-SiC\ub85c \ubd88\ub9ac\ub294 \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \uc804\uae30\ucc28\uc758 \ube0c\ub808\uc774\ud06c\uc640 \ud074\ub7ec\uce58, \ubc29\ud0c4\uc870\ub07c\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub420 \ubfd0\ub9cc \uc544\ub2c8\ub77c, \uc774\uc885 \ucd09\ub9e4\uc758 \uae30\ud310\uc73c\ub85c\ub3c4 \ud65c\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uc18c\uc7ac\ub97c \uc0b0\uc5c5\uc6a9 \uaddc\ubaa8\ub85c \uc0dd\uc0b0\ud558\ub294 \uacfc\uc815\uc5d0\ub294 \uc5ec\uc804\ud788 \uc804\uae30 \uc6a9\uad11\ub85c\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc21c\uc218\ud55c \uaddc\uc0ac \ubaa8\ub798\ub97c \ubbf8\uc138\ud558\uac8c \ubd84\uc1c4\ud55c \ucf54\ud06c\uc2a4\uc640 \ud568\uaed8 \ud658\uc6d0\ud558\ub294 \uacf5\uc815\uc774 \ud3ec\ud568\ub418\uba70, \uc804\ub825 \uc804\uc790 \ubd84\uc57c\uc758 \uace0\uc804\uc555 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c\ub294 \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\uc758 \uc0b0\uc5c5\uc6a9 \uaddc\ubaa8 \uc0dd\uc0b0 \ubc29\uc2dd\uc774 \uc5ec\uc804\ud788 \ub110\ub9ac \uc120\ud638\ub418\uace0 \uc788\ub2e4.<\/p>\n<h2>\ubd80\uc815\uc801\uc778 \uc628\ub3c4 \uacc4\uc218\ub97c \uac00\uc9d1\ub2c8\ub2e4<\/h2>\n<p>\uc774\uc0b0\ud654\uaddc\uc18c\ub77c\uace0\ub3c4 \uc54c\ub824\uc9c4 \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \uaddc\uc18c\uc640 \ud0c4\uc18c\ub85c \uad6c\uc131\ub41c \ub2e8\ub2e8\ud55c \ud654\ud569\ubb3c\ub85c, \uad11\ubb3c\uc778 \ubaa8\uc774\uc0ac\ub098\uc774\ud2b8 \ud615\ud0dc\ub85c \uc790\uc5f0\uc5d0 \uc874\uc7ac\ud558\uc9c0\ub9cc, 1893\ub144\ubd80\ud130 \uc5f0\ub9c8\uc7ac \ubc0f \ubc29\ud0c4\uc870\ub07c\uc6a9 \uc138\ub77c\ubbf9 \ud310\uc7ac \uc7ac\ub8cc\ub85c \uc0ac\uc6a9\ud558\uae30 \uc704\ud574 \ubd84\ub9d0\uacfc \uacb0\uc815 \ud615\ud0dc\ub85c \ub300\ub7c9 \uc0dd\uc0b0\ub418\uc5b4 \uc654\ub2e4. \ud06c\uae30\uac00 \ud070 \ub2e8\uacb0\uc815 \uc785\uc790\ub4e4\uc744 \uc18c\uacb0\ud558\uc5ec \uacb0\ud569\ud558\uba74 \ub9e4\uc6b0 \uac15\uc778\ud55c \uad6c\uc870\uc6a9 \uc138\ub77c\ubbf9\uc744 \uc81c\uc870\ud560 \uc218 \uc788\uc73c\uba70, \ub610\ud55c \ud569\uc131 \ubaa8\uc774\uc0ac\ub098\uc774\ud2b8 \ubcf4\uc11d\uc758 \uc6d0\ub8cc\ub85c\ub3c4 \uc790\uc8fc \uc0ac\uc6a9\ub41c\ub2e4. \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \ubc18\ub3c4\uccb4 \uc5ed\ud560\ub3c4 \uc218\ud589\ud558\uba70, \uc9c8\uc18c\ub098 \uc778\uc744 \ub3c4\ud551\ud558\uba74 n\ud615 \uc18c\uc7ac\uac00 \ub418\uace0, \ub9c8\ucc2c\uac00\uc9c0\ub85c \ubca0\ub9b4\ub968, \ubd95\uc18c \ub610\ub294 \uc54c\ub8e8\ubbf8\ub284\uc744 \ub3c4\ud551\ud558\uba74 p\ud615 \uc18c\uc7ac\ub85c \ubcc0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p>\uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \ub113\uc740 \ubc34\ub4dc\uac2d\uacfc \ub192\uc740 \uc804\uae30\uc7a5 \ud30c\uad34 \uac15\ub3c4\ub97c \uac00\uc9c0\uace0 \uc788\uc5b4, \uadf9\ub3c4\ub85c \ub192\uc740 \uc628\ub3c4\ub098 \uc804\uc555\uc5d0\uc11c \uc791\ub3d9\ud558\ub294 \uc804\uc790 \uc18c\uc790\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \ub610\ud55c, \uc5f4\ucda9\uaca9\uc5d0 \uac15\ud55c \ud2b9\uc131 \ub355\ubd84\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \ub2e4\uc591\ud55c \ub2e8\uc704 \uc140 \ud615\ud0dc(\uc785\ubc29, \ub9c8\ub984\ubaa8\uaf34, \uc721\uac01\ud615)\ub85c \uc874\uc7ac\ud569\ub2c8\ub2e4. \uc810\ud1a0\ub97c \uc0ac\uc6a9\ud558\uc5ec \uace0\ubc00\ub3c4\ud654\ud558\uba74 \ub125(neck)\uc758 \uc131\uc7a5\uc744 \uc5b5\uc81c\ud560 \uc218 \uc788\uc744 \ubfd0\ub9cc \uc544\ub2c8\ub77c, \uadf8\ub807\uc9c0 \uc54a\uc73c\uba74 \ud0c4\uc131 \uacc4\uc218\ub97c \uac10\uc18c\uc2dc\ud0ac \uc218 \uc788\ub294 SiO\u2082\uc758 \ud615\uc131\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2e4\uc591\ud55c \uc5f0\uad6c\uc5d0\uc11c \ubc00\ub3c4 \ud568\uc218 \uc774\ub860(DFT) \uc2dc\ubbac\ub808\uc774\uc158\uc744 \uae30\ubc18\uc73c\ub85c \ud55c \uc81c1\uc6d0\ub9ac \ubd84\uc790 \ub3d9\uc5ed\ud559 \uc2dc\ubbac\ub808\uc774\uc158\uc744 \uc0ac\uc6a9\ud558\uc5ec \uace0\uc555 \ud558\uc5d0\uc11c\uc758 \uc6a9\uc735 \uac70\ub3d9\uc744 \uc870\uc0ac\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\uc591\uc555 \uacc4\uc218\ub97c \uac00\uc9c4\ub2e4<\/h2>\n<p>\uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\ub294 \uadf9\ub3c4\ub85c \ub2e8\ub2e8\ud558\uace0 \uac15\uc131\uc774 \ub192\uc740 \uc138\ub77c\ubbf9 \uc18c\uc7ac\ub85c, \ub192\uc740 \ub0b4\uc5f4\uc131, \ub0ae\uc740 \uc5f4\ud33d\ucc3d \uacc4\uc218 \ubc0f \ud654\ud559\uc801 \ubc18\uc751\uc5d0 \ub300\ud55c \ub0b4\uc131\uc744 \ud2b9\uc9d5\uc73c\ub85c \ud569\ub2c8\ub2e4. \uc774 \uc18c\uc7ac\ub294 \uad6c\ub9e4\uc6a9 \uacfc\ub9bd \ud615\ud0dc\ub294 \ubb3c\ub860, \ub300\ud615 \ub9dd\uc6d0\uacbd\uc758 \uac70\uc6b8\ub85c \uc81c\uc791\ud560 \uc218 \uc788\ub294 \uc6e8\uc774\ud37c \ub4f1 \ub2e4\uc591\ud55c \ud06c\uae30\uc640 \ud615\ud0dc\ub85c \uc81c\uacf5\ub429\ub2c8\ub2e4. \uc2e4\ub9ac\ucf58 \uce74\ubc14\uc774\ub4dc\uc758 \uc81c\uc870 \ubc29\ubc95\uc740 \uc9c1\uc811 \ud0c4\uc18c \ud569\uc131\ubc95\ubd80\ud130 \ud654\ud559 \uae30\uc0c1 \uc99d\ucc29\ubc95\uae4c\uc9c0 \ub2e4\uc591\ud569\ub2c8\ub2e4.<\/p>\n<p>\uae09\ub0c9 \uc2e4\ud5d8 \ubc0f \ud604\uc7a5 \uce21\uc815\uc744 \ud1b5\ud574 3100+40 K\uc5d0\uc11c 5-8 GPa\uc5d0 \uc774\ub974\ub294 \uc628\ub3c4 \ubc94\uc704\uc5d0\uc11c ZB \ubc0f RS SiC\uc758 \ub370\ube44 \uc628\ub3c4\uac00 \uc555\ub825\uc5d0 \ub530\ub77c \uc5b4\ub5bb\uac8c \ubcc0\ud654\ud558\ub294\uc9c0\uc5d0 \ub300\ud55c \uc5f0\uad6c\uac00 \uc218\ud589\ub418\uc5c8\ub2e4. \uadf8 \uacb0\uacfc, \uc0c1\uc555 \uc870\uac74\uc5d0\uc11c\ub294 \ub450 \ub77c\uba54 \uc0c1\uc218(l, m) \ubaa8\ub450 \uc591\uc758 \uac12\uc744 \ubcf4\uc600\uc73c\uba70, \ud2b9\ud788 m\uc758 \ud3b8\ucc28\uac00 \uc810\ucc28 \uc99d\uac00\ud558\ub294 \uac83\uc73c\ub85c \ub098\ud0c0\ub0ac\ub294\ub370, \uc774\ub294 \uace0\uc555\uc5d0\uc11c \uc804\ud558 \uc774\ub3d9 \uc0c1\ud638\uc791\uc6a9\uc744 \uc218\ubc18\ud558\ub294 \ube44\uc911\uc2ec \ub2e4\uccb4\ub825\uc758 \uac15\ub3c4\uac00 \uc99d\uac00\ud558\uc5ec SiC\uc758 \uc555\ucd95\uc131\uc5d0 \uae30\uacc4\uc801 \uac15\uc131\uc774 \uac00\ud574\uc9c0\ub294 \uac83\uc744 \uc2dc\uc0ac\ud55c\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>Silicon carbide (also referred to as carborundum) is an inorganic chemical compound composed of silicon and carbon atoms, naturally found [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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