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   [¿¬±¸½Ç] ¼ÒÀç¹× Àç·áº¹ÇÕ½ÇÇè  

A replication of H.J. Rounds LED experiments

Early, non-systematic and often non-recognized syntheses of silicon carbide had been reported by Despretz (1849), Marsden (1880) and Colson (1882).[3] Wide-scale production is credited to Edward Goodrich Acheson around 1893. He patented the method for making silicon carbide powder on February 28, 1893.[4] Acheson also developed the electric batch furnace by which SiC is still made today and formed The Carborundum Company to manufacture bulk SiC, initially for use as an abrasive.[5] In 1900 the company settled with the Electric Smelting and Aluminum Company when a judge's decision gave "priority broadly" to its founders "for reducing ores and other substances by the incandescent method".[6] It is said that Acheson was trying to dissolve carbon in molten corundum (alumina) and discovered the presence of hard, blue-black crystals which he believed to be a compound of carbon and corundum: hence carborundum. Or, he named the material "carborundum" by analogy to corundum, which is another very hard substance (9 on the Mohs scale).Historically, first use of SiC was as an abrasive. They were followed by electronic applications. In the beginning of the 20th century, silicon carbide was used as a detector in the first radios,[7] and in 1907 Henry Joseph Round produced the first light emitting diod̀ (LED) by applying a voltage to a SiC crystal and observing yellow, green and orange emission at the cathode. Those experiments were later repeated by O. V. Losev in the Soviet Union in 1923.


Ãʱâ , źȭ ±Ô¼Ò ÀÇ ºñ ü°èÀûÀÌ°í ºÒ¿ÏÀüÇÑ ÇÕ¼ºÀº µ¥½ºÇÁ·¹Ã÷(1849) , ¸¶½º ´ø(1880) ¿Í Äݽ¼(1882) ¿¡ ÀÇÇغ¸°í µÇ¾ú´Ù. »ó¿ëÀ¸·Î Àû¿ëµÈ ½ÃÁ¡Àº 1893°æ¿¡ ¿¡µå¿öµå ±Â ¸®Ä¡ ¾ÖÄ¡½¼¿¡ ¹ß°ß µË´Ï´Ù. ±×´Â 1893³â 2¿ù 28ÀÏ ¿¡ źȭ±Ô¼Ò ºÐ¸»À» ¸¸µé±âÀ§Çѹæ¹ý¿¡ °üÇÏ¿© ƯÇ㸦 Ãâ¿øÇÏ¿´°í. ¾ÖÄ¡½¼µµ ÀÌ  SiC°¡  Ãʱ⿬¸¶Á¦·Î »ç¿ëÇϱâ À§ÇØ, ´ë·®ÀÇ SiC¸¦ Á¦Á¶ÇÏ´ÂÄ«º¸·±´ý ȸ»ç ¸¦ ¼³¸³ÇÑ ½Ã±â¿¡ ÀÏ°ý °³¹ßÇß´Ù. ƯÇã¼Ò¼Û¿¡¼­[ÆÇ»çÀÇ °áÁ¤Àº ¼³¸³ÀÚ¿¡ " ±¤¹üÀ§ÇÏ°Ô ¿ì¼± ¼øÀ§¸¦ " ÀÎÁ¤¹Þ¾Ò´Ù] 1900 ³â¿¡ ÀÌ È¸»ç´Â "¹é¿­µî ¹æ¹ýÀ¸·Î ±¤¼® ¹× ±âŸ ¹°ÁúÀ» ÁÙÀ̱âÀ§ÇÑ "Àü±âÁ¦·Ã ¹× ¾Ë·ç¹Ì´½ ȸ»ç¿Í ÇÕÀÛÇß´Ù. ±×°ÍÀº ¾ÖÄ¡½¼ÀÌ ÇÏ·Á°íÇß´ø °ÍÀ¸·Î ¾Ë·ÁÁ® ÀÖ½À´Ï´Ù ¿ëÀ¶ Ä¿·±´ý ( ¾Ë·ç¹Ì³ª )¿¡ ź¼Ò¸¦ ¿ëÇØÇÏ¿© ź¼Ò¿Í Ä¿·±´ýÀÇ È­ÇÕ¹° ·Î ¿©°ÜÁö°í Çϵå, ºí·ç, ºí·¢ Å©¸®½ºÅ»ÀÇ Á¸À縦 ¹ß°ßÇÔ¿¡µû¶ó Ä«º¸ ·±´ýÀÌ ¶Ç ´Ù¸¥ ¸Å¿ì ´Ü´ÜÇÑ ¹°ÁúÀÌ´Ù¶õ °ÍÀ» ¹ß°ßÇÏ°í ±× Àç·á¸¦ " Ä«º¸ ·±´ý "À̶ó ¸í¸íÇß´Ù. ¿ª»çÀûÀ¸·Î´Â  SiC¸¦ óÀ½ »ç¿ë ¿¬¸¶Á¦·Î Çß´Ù. ±×¸®°í ÀüÀÚÀÀ¿ë ÇÁ·Î±×·¥¿¡¼­ ÃßÀû°üÂû ÇÏ¿´´Ù. 20 ¼¼±â°¡ ½ÃÀ۵Ǹ鼭, źȭ±Ô¼ÒÁ¦°¡ ¶óµð¿ÀÀÇ ÀüÆÄ °ËÃâ±â·Î¼­ »ç¿ë ÇÏ¿´´Ù  1907 ³â Ç Á¶¼Á ¶ó¿îµåÀÇ SiC °áÁ¤¿¡Àü¾ÐÀ» °¡ÇÏ°í ºÒ²É»öÀ» °üÂûÇÔÀ¸·Î½áÁ¦ ¹ß±¤ DIOD (LED )¸¦ »ý»ê, À½±Ø¿¡¼­ ³ì»ö°ú ÁÖȲ»ö ¹ß±¤ . ±× ½ÇÇèÀº ÀÌÈÄ 1923 ³â¿¡ ¼Ò·Ã¿¡¼­ OV Losev À¸·Î ¹Ýº¹ ÇÏ¿´´Ù .


 

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[¿¬±¸½Ç] ¼ÒÀç¹× Àç·áº¹ÇÕ½ÇÇè
A replication of H.J. Rounds LED experimentsEarly, non-systematic and often non-recognized syntheses of silicon carbide had been reported by Despretz (1849), Marsden (1880) and Colson (1882).[3] Wide-scale production is credited to Edward Goodrich Acheson around 1893. He patented the method for making silicon carbide powder on February 28, 1893.[4] Acheson also developed the electric batch furnace by which SiC is still made today and formed The Carborundum Company to manufacture bulk SiC, initially for use as an abrasive.[5] In 1900 the company settled with the Electric Smelting and ¡¦
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[Thin filament pyrometry]Main article: Thin filament pyrometryImage of the test flame and glowing SiC fibers. The flame is about 7 cm tall.Silicon carbide fibers are used to measure gas temperatures in an optical technique called thin filament pyrometry. It involves the placement of a thin filament in a hot gas stream. Radiative emissions from the filament can be correlated with filament temperature. Filaments are SiC fibers with a diameter of 15 micrometers, that is 5 times thinner than human hair. Because the fibers are so thin, they do little to disturb the flame and their tempera¡¦
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ÀúÇ×°ú ¿Âµµ¿ÍÀÇ °ü°è±×¸²1) ÀϹÝÀûÀÎ ÀúÇ× ¿Âµµ Ư¼º µµ 1¿¡ µµ½Ã µÈ ¹Ù¿Í °°ÀÌ (¿Âµµ´Â ÀúÇ× °ªÀÌ ³»·Á°¡¸é.) "SiC Heater"ÀúÇ× ¿Âµµ Ư¼ºÀÇ ¿Âµµ °è¼ö°¡650-700µµ±îÁö ºÎÁ¤ÀûÀ̳ª, ´Ù½Ã ¿Âµµ°¡ »ó½ÂÇϸé(±àÁ¤ÀûÀ¸·Î ¹Ù²î¸é ¿Âµµ ¿Ã¶ó°£´Ù) ÀúÇ× °ªÀÌ ¿Ã¶ó °£´Ù.Âü°í : SiC ÀúÇ×Àº ÀϹÝÀûÀ¸·Î ³ëÃâµÈ ¾ß¿Ü ´ë±â¿Âµµ 1000µµ ¿¡¼­ ÃøÁ¤µË´Ï´Ù. ¸í½ÃµÈ °øĪ ÀúÇ×Àº½Ç¿Â¿¡¼­ ÃøÁ¤ÇÑ °Í°ú °ü°è°¡ ¾ø½À´Ï´Ù. (ÂüÁ¶ ±×¸² 1)1000¡ÆCÀÇ Ç¥ÁØ ±³Á¤¿¡ SiC ¹ß¿­Ã¼ÀÇ Á¤°Ý °ªÀº Æò±ÕÀúÇ×À¸·Î ¼³°è½Ã ±âÁØÀº 1000µµÀÔ´Ï´Ù.È­ÇÐÀûƯ¼ºSiC ¹ß¿­Ã¼´Â È­ÇÐÀûÀ¸·Î ¾ÈÁ¤µÈ, Àç°áÁ¤ ½Ç¸®ÄÜ Ä«¹ÙÀ̵å·Î ÀÌ·ç¾îÁö°í, °í¿Â ¾È¡¦
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¡á ºÐÀ§±âÀÇ SiCÈ÷ÅÍ¿¡ ´ëÇÑ ¿µÇâ    ·Î(ÒÄ) ³»ºÎÀÇ ºÐÀ§±â´Â SiC È÷ÅÍÀÇ ¼ö¸í¿¡ Å« ¿µÇâÀ» ¹ÌÄ£´Ù. °¡µ¿ Áß¿¡ SiC È÷ÅÍ´Â Á¡Â÷ »êÈ­µÇ¾î SiO©ü·Î º¯È­µÈ´Ù. SiO©ü´Â SiC ¼öÁ¤ ¼ººÐÀ» ºÐ¸®½ÃÅ°°í, ÀÌ¿¡ µû¶ó ÀúÇ×ÀÌ Áõ°¡ÇÏ´Â ºÎÀ§°¡ »ý°Ü ºÎÇÇ°¡ È®´ëµÇ°í, SiC È÷ÅÍ°¡ ÆļյȴÙ. °ÇÁ¶ÇÏ°í ¼ø¼öÇÑ °ø±â Áß¿¡¼­ SiC È÷ÅÍ´Â 2000½Ã°£À» °è¼Ó »ç¿ëÇÒ ¼ö ÀÖ´Ù.¡á ºÐÀ§±â¿¡µû¸¥ ÃÖ°í »ç¿ë ¿Âµµ(¡É)     ¢º SiC (źȭ±Ô¼Ò)°è¿­             Air(°ø±â) 1500¡É        Vacuum(Áø°ø) 1000-1200¡É¡¦