ÇÐȸ»ó ¼ö»ó°­¿¬
2020³âµµ ¼®ÃµÇмú»ó ¼ö»óÀÚ

ÀÌÈ£¼º ±³¼ö

°æºÏ´ëÇб³ CV
10¿ù 28ÀÏ(¼ö) 9:00-9:25

¿­ÀüÀç·áÀÇ °ÝÀÚ ¿­Àüµµµµ¿Í °áÁ¤ °áÇÔ

¿­Àü¼ÒÀÚ´Â ¿­À» Àü±â·Î ȤÀº Àü±â¸¦ ¿­·Î Á÷Á¢ º¯È¯½Ãų ¼ö ÀÖ´Ù. ¿­Àü¼ÒÀÚÀÇ Æ¯¼ºÀº ¿­ÀüÀç·áÀÇ ¼º´ÉÁö¼ö, ZT=S2¥ò/¥ê¿¡ Å©°Ô Á¿ìµÈ´Ù. ¿©±â¼­ S´Â Á¦º¤°è¼ö, ¥ò´Â Àü±âÀüµµµµ, ¥ê´Â ¿­ÀüµµµµÀ̸ç ij¸®¾î ¿­Àüµµµµ ¥êc¿Í °ÝÀÚ ¿­Àüµµµµ ¥êl·Î ÀÌ·ç¾îÁ® ÀÖ´Ù. Á¦º¤°è¼ö, Àü±âÀüµµµµ, ij¸®¾î ¿­Àüµµµµ´Â ij¸®¾î ³óµµ¿¡ ÀÇÇØ ¼­·Î Á¾¼ÓÀûÀÎ °ü°è¿¡ ÀÖÁö¸¸ °ÝÀÚ ¿­Àüµµµµ´Â ij¸®¾î ³óµµ¿¡ ¹«°üÇØ µ¶¸³ÀûÀ¸·Î Á¦¾îÇÒ ¼ö ÀÖ´Ù. ZT °ª Çâ»óÀ» À§Çؼ­´Â ÆÄ¿öÆÑÅÍ, S2¥ò¸¦ ³ôÀÌ°í ¿­Àüµµµµ¸¦ ³·Ãß¾î¾ß ÇÑ´Ù. ÆÄ¿öÆÑÅÍ Çâ»óÀ» À§ÇÑ ¹æ¹ý¿¡´Â ¹êµå±¸Á¶¿Í °ø¸í»óÅ Á¦¾î, ¿¡³ÊÁö ÇÊÅ͸µ È¿°ú µîÀÌ ÀÖÀ¸¸ç, °ÝÀÚ ¿­Àüµµµµ °¨¼Ò¸¦ À§ÇÑ ¹æ¹ý¿¡´Â Á¡ °áÇÔ, ÀüÀ§, ÀûÃþ°áÇÔ µî °áÁ¤ °áÇÔ µµÀÔ°ú °áÁ¤¸³ Å©±â Á¦¾î µîÀÌ ÀÖ´Ù. º» ¹ßÇ¥¿¡¼­´Â ¿­ÀüÀç·áÀÇ °ÝÀÚ ¿­Àüµµµµ °¨¼Ò¿¡ ±â¿©ÇÏ´Â °áÁ¤ °áÇÔµéÀÇ Á¾·ù¿Í Ư¡¿¡ ´ëÇØ °íÂûÇØ º¸°íÀÚ ÇÑ´Ù. ƯÈ÷ »ó¿Â¿ë Bi2Te3°è¿¡¼­ ÀûÃþ °áÇÔ, Á߿¿ë GeTe°è¿¡¼­ Ç층º» ±¸Á¶, Mg2Si°è¿¡¼­ ½ÖÁ¤, SnTe°è¿¡¼­ ±ÔÄ¢»ó, PbTe°è¿¡¼­ ³ª³ë ¼®Ãâ¹°, MnSi1.75°è¿¡¼­ ÀûÃþ°áÇÔ°ú ÀüÀ§, NbFeSb ÇÏÇÁ È£À̽½·¯¿¡¼­ ÁÖ»óÁ¤ ±¸Á¶ µî¿¡ ´ëÇØ °£·«ÇÏ°Ô ³íÀÇÇÏ°íÀÚ ÇÑ´Ù.

2020³âµµ ÀüÀÚ¡¤Á¤º¸Àç·á»ó ¼ö»óÀÚ

Á¤¿ìö ±³¼ö

Çѱ¹°úÇбâ¼ú¿ø CV
10¿ù 28ÀÏ(¼ö) 9:25-9:50

Ex-solution, Supported Catalyst Game-Changer:
Case Study of Particle-size Distribution Control

Supported metal catalysts represent one of the major milestones in heterogeneous catalysis. Such catalytic systems are feasible for use in a broad range of applications, including renewable energy devices, sensors, automotive emission control systems, and chemical reformers. The lifetimes of these catalytic platforms depend strongly on the stability of the supported nanoparticles. With this regard, nanoparticles synthesized via ex-solution process emphasize exceptional robustness as they are socketed in the host oxide. Ex-solution refers to a phenomenon which yields selective growth of fine and uniformly distributed metal nano-catalysts on oxide supports upon partial reduction. This type of advanced structural engineering is a game-changer in the field of heterogeneous catalysis with numerous studies showing the benefits of ex-solution process. In this talk, I will highlight the latest research efforts regarding the ex-solution phenomenon, and in particular, present the nucleation and growth kinetics that determine the size distribution of ex-solved metal particles.

2020³âµµ À±µ¿¼®»ó ¼ö»óÀÚ

È«¼øÁ÷ ±³¼ö

°øÁÖ´ëÇб³CV
10¿ù 28ÀÏ(¼ö) 9:50-10:15

Development of structural and functional materials by the powder metallurgy, and investigation of their characteristics and properties.

Powder metallurgy has been expanded to produce the high-performance advanced materials for various functional and structural applications. In fact, new emerging materials such as thermoelectric materials, magnetic materials and high entropy alloys have been majorly fabricated using powder metallurgical approaches for the real time applications in the way of device manufacturing. Nevertheless, a novel method yet to be developed for producing the ascribed alloy powders in a large-scale amount. In this state, we have designed and developed the rapid solidification (gas atomization and water atomization) process, which is the best approach to produce various types of alloy powders in large scale (3-5kgs) with an excellent chemical homogeneity, best segregation and flowability. In these rapid solidification techniques, we can be able to control the particle size distribution and morphology of the alloy powder by adjusting the processing parameters such as nozzle diameter, temperature of the melt and solidification rate. The fabricated alloy powders are compacted by various processes such as high energy magnetic pulsed compaction (MPC), spark plasma sintering (SPS), and hot pressing (HP). In addition, the hierarchical structured materials have been developed for the significant enhancement in mechanical properties with higher electronic properties. The bulks were further analyzed by electron probe micro analyzer (EPMA), atom probe tomography (APT), electron back scattering diffraction (EBSD) and transmission electron microscopy (TEM) respectively. The mechanical properties such as bending strengths, compression strengths, and micro-Vickers hardness values are carried out and interpreted their result with microstructure. The electronic properties, and thermal properties are investigated, and interpretated. The thermoelectric modules are fabricated with good efficiency, and mechanical strength, applicable in commercial purpose.

2020³âµµ ±è¿ëÁø»ó ¼ö»óÀÚ

À̱ÔÇü ±³¼ö

¿¬¼¼´ëÇб³ CV
10¿ù 28ÀÏ(¼ö) 10:15-10:40

¹«±â¼ÒÀç ±â´ÉƯ¼º Áõ´ë¸¦ À§ÇÑ °áÇÔÁ¦¾î ±â¼ú

¹«±â¼ÒÀçÀÇ ±â´ÉƯ¼ºÀº Á¶¼º »Ó ¾Æ´Ï¶ó ¼ÒÀçÀÇ Â÷¿øÀû, ±¸Á¶Àû Ư¼º°ú ¹ÐÁ¢ÇÑ °ü·ÃÀÌ ÀÖ´Ù. °áÇÔÀº ¼ÒÀçÀÇ ±¸Á¶Àû Ư¼ºÀ» ³ªÅ¸³»´Â Áß¿äÇÑ ÀÎÀÚ Áß ÇϳªÀ̸ç, ÃÖ±Ù °áÇÔÁ¦¾î¸¦ ÅëÇÑ ¹°¼º Áõ´ë ¿¬±¸°¡ È°¹ßÈ÷ ÁøÇàµÇ°í ÀÖ´Ù. º» ¹ßÇ¥¿¡¼­´Â ±âÁ¸¿¡ È®¸³µÈ °øÁ¤ ±â¼ú°ú´Â ´Ù¸¥ ±Þ¼ÓÀÀ°í ¹× Àü±âÈ­ÇÐ ±â¹ÝÀÇ »õ·Î¿î °áÇÔ Çü¼º-Á¦¾î °øÁ¤ ¹× ¼³ºñ ±â¼úÀ» ¼Ò°³ÇÏ°íÀÚ ÇÑ´Ù. ƯÈ÷, ±âÁ¸ °øÁ¤ÀÇ °áÇÔ Á¦¾î´É ÇѰ踦 µ¹ÆÄÇϱâ À§ÇÑ ÀÌ·ÐÀû ±Ù°Å¿Í °øÁ¤ÀÎÀÚ Ãø¸é¿¡¼­ÀÇ Æ¯Â¡À» °íÂûÇÑ´Ù. È®¸³µÈ °øÁ¤ ±â¼úÀ» ÀÌ¿ëÇÏ¿© Á¦Á¶ÇÑ °áÇÔÁ¦¾î ¼ÒÀ籺¿¡ ´ëÇÑ ºÐ¼®°ú °³¹ß ¼ÒÀçÀÇ ¹°¸®Àû Ư¼º ÃøÁ¤ °á°ú¸¦ ¿¬°èÇÏ¿© ±â¼úÀû ½ÇÈ¿¼ºÀ» °ËÁõÇÑ´Ù. °áÇÔÁ¦¾î¸¦ À§ÇÑ ½Å°øÁ¤ ±â¼úÀº ´Ù¾çÇÑ ¹«±â¼ÒÀç¿¡ Àû¿ëÇÒ ¼ö ÀÖ´Â ¹ü¿ë±â¼ú·Î °¡Ä¡°¡ Å©¸ç, ±Ã±ØÀûÀ¸·Î °áÇÔÀÇ ±¸Á¶ ¹× ¹Ðµµ°¡ ¿¬¼ÓÀûÀ¸·Î Á¦¾îµÈ LibraryÇü ±â¼úÀ» È®¸³ÇÒ ¼ö ÀÖ´Â ¿øõ±â¼ú·Î °¡Ä¡°¡ Ŭ °ÍÀÌ´Ù.

2020³âµµ û¿õ»ó ¼ö»óÀÚ

Á¤ÀÎÈ£ ±³¼ö

¼­¿ï´ëÇб³ CV
10¿ù 28ÀÏ(¼ö) 10:40-11:05

From CALPHAD Thermodyanmic Database To Virtual Steelmaking Plant

The complex chemical reactions in steelmaking process are hard to solve manually. Therefore, the CALPHAD thermodynamic database containing the thermodynamic data of multicomponent system has been developed over the several decades and widely used to investigate the complex reactions. In order to more closely understand the real-time changes in chemistry and temperature of molten steel and slag in steelmaking process, our research group has developed the steelmaking process simulation models based on so-called Effective Equilibrium Reaction Zone (EERZ) concept over last 10 years. In this study, our group activity on the CALPHAD thermodynamic database and process simulation models will be briefly introduced, and our current research direction to Virtual Steelmaking Plant will be presented.

2020³âµµ ¼­Á¤»ó ¼ö»óÀÚ

±èÇü¿í Ã¥ÀÓ¿¬±¸¿ø

Àç·á¿¬±¸¼Ò CV
10¿ù 28ÀÏ(¼ö) 11:05-11:30

ÀÚµ¿Â÷¿ë Â÷ü¿ë °í°­µµ ¾Ë·ç¹Ì´½ ÇÕ±Ý ÆÇÀç °³¹ß ¹× ÇöȲ

ÀÚµ¿Â÷ÀÇ ¿¬ºñÇâ»ó ¹× ÀÌ»êȭź¼Ò ¹èÃâ °¨¼Ò¸¦ À§ÇØ ¹Ì·¡Çü ģȯ°æÂ÷ÀÇ °³¹ßÀÌ °¡¼ÓµÇ°í ÀÖ´Ù. ±âÁ¸ ³»¿¬±â°üÂ÷·ÎºÎÅÍ, ÇÏÀ̺긮µåÀÚµ¿Â÷, Àü±âÀÚµ¿Â÷, ¿¬·áÀüÁöÀÚµ¿Â÷¿¡ À̸£±â±îÁö ÀÚµ¿Â÷ÀÇ °æ·®È­´Â ÁÖÇà°Å¸® È®º¸ ¹× Â÷·® ¼º´ÉÇâ»óÀ» À§ÇÑ Çʼö¿ä°ÇÀÌ µÇ°í ÀÖ´Ù. ÀÚµ¿Â÷ÀÇ °æ·®È­¸¦ À§ÇØ ±âÁ¸ÀÇ Ã¶°­À縦 ´ëüÇϱâ À§ÇÑ ¾Ë·ç¹Ì´½, ¸¶±×³×½·, ź¼Ò¼¶À¯°­È­ Çöó½ºÆ½ µî ¸¹Àº °æ·®Àç·áµéÀÌ °³¹ßµÇ¾î Àû¿ëµÇ°í ÀÖÀ¸¸ç ±× Áß °í°­µµ ¾Ë·ç¹Ì´½ÇÕ±ÝÀº °¡Àå º¸ÆíÀûÀÎ °æ·®È­ ±Ý¼Ó¼ÒÀç·Î ¸¹ÀÌ »ç¿ëµÇ°í ÀÖ´Ù. ƯÈ÷ ÀÚµ¿Â÷ Â÷üÀÇ °æ¿ì °­µµ¿Í ¼ºÇü¼ºÀÌ ¿ì¼öÇÑ 5xxx°è(Al-Mg°è) ¹× 6xxx°è(Al-Mg-Si°è) ¾Ë·ç¹Ì´½ÇÕ±ÝÀÌ ÁÖ·Î »ç¿ëµÇ°í ÀÖÀ¸¸ç ÃÊ°æ·® Â÷ü¸¦ À§ÇÑ 7xxx°è(Al-Zn-Mg-Cu°è) ÆÇÀçÀÇ Â÷üÀû¿ëÀÌ ÃÖ±Ù È°¹ßÈ÷ ¿¬±¸µÇ°í ÀÖ´Ù. ÀÚµ¿Â÷¿ë ¾Ë·ç¹Ì´½ ÇÕ±ÝÀ¸·Î °³¹ßµÈ 5xxx°è ¾Ë·ç¹Ì´½ ÇÕ±ÝÀÇ °æ¿ì ¼ºÇü¼ºÀÌ ¿ì¼öÇÏ°í °¡°ø°æÈ­·Î ÀÎÇÑ Ç׺¹°­µµÀÇ Áõ°¡¸¦ ±â´ëÇÒ ¼ö ÀÖÀ¸³ª ³»½Ä¼º°ú Ç¥¸é󸮼ºÀÌ ´Ù¼Ò ºÎÁ·ÇÏ°í ¼ºÇü ÈÄ Stretcher-Strain markµîÀ¸·Î ÀÎÇØ Ç¥¸éÇü»óÀÌ ÁÁÁö ¾Ê¾Æ ÁÖ·Î ³»ÆÇ¿¡ È°¿ëµÇ°í ÀÖÀ¸¸ç, ½ÃÈ¿ °æÈ­Çü ÇÕ±ÝÀÎ 6xxx°è ¾Ë·ç¹Ì´½ÇÕ±ÝÀÇ °æ¿ì ¿ì¼öÇÑ ³»½Ä¼º°ú Â÷ü ÆäÀÎÆ® °æÈ­ ½Ã Ãß°¡ÀûÀÎ °­µµ Çâ»óÀ» ±â´ëÇÒ ¼ö ÀÖ¾î ³» ¿ÜÆÇ¿¡ ¸ðµÎ »ç¿ëµÇ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ÇձݵéÀº ÷°¡µÇ´Â ¿ø¼ÒÀÇ ÇÔ·®¿¡ µû¶ó °­µµ ¹× ¼ºÇü¼º¿¡ Â÷À̸¦ º¸ÀÌ¸ç ´Ù¾çÇÑ °¡°ø¿­Ã³¸® ¹æ¹ý¿¡ ÀÇÇÏ¿© ±× Ư¼ºÀ» °³¼± ÇÒ ¼ö ÀÖ´Ù. Áö±Ý±îÁö ÀÚµ¿Â÷ Â÷ü¿ëÀ¸·Î °³¹ßµÈ ´Ù¾çÇÑ ÇձݵéÀÇ Æ¯¼º¿¡ ´ëÇÏ¿© ³íÀÇÇÏ°í ÃÖ±Ù ´Ù¾çÇÑ ¿ä±¸ Ư¼ºÀ» ¸¸Á·½ÃÅ°±â À§ÇÑ »õ·Î¿î ÀÚµ¿Â÷ Â÷ü¿ë ¾Ë·ç¹Ì´½ ÇÕ±ÝÆÇÀçÀÇ Á¦Á¶ °øÁ¤°ú ±× Ư¼º¿¡ ´ëÇÏ¿© ¼Ò°³ÇÏ°íÀÚ ÇÑ´Ù.

2020³âµµ öÀç»ó ¼ö»óÀÚ

Á¤È¯±³ ¼ö¼®¿¬±¸¿ø

¢ßÆ÷½ºÄÚ ±â¼ú¿¬±¸¿ø CV
10¿ù 28ÀÏ(¼ö) 11:30-11:55

ģȯ°æ ¿¡³ÊÁö¿ë °­Àç ±â¼ú °³¹ß µ¿Çâ

±âÁ¸ÀÇ ¿¡³ÊÁö¿ë °­Àç´Â ¼®À¯, °¡½ºµî È­¼®¿¬·áÀÇ Ã¤±¼, ¼ö¼Û ¹× ÀúÀå¿¡ ÀÌ¿ëµÇ´Â °­Àç·Î Á¤ÀǵǾúÀ¸³ª, 2015³â Æĸ®±âÈÄÇù¾à ÀÌÈÄ Ä£È¯°æ¿¡³ÊÁö Á¤Ã¥¿¡ µû¶ó LNG¿Í dz·Â¿¡ ´ëÇÑ °ü½ÉÀÌ ³ô¾ÆÁö°í ÀÖÀ¸¸ç ÃÖ±Ù¿¡´Â ¿¡³ÊÁö¿øÀ¸·Î ¼ö¼Ò¸¦ ÀÌ¿ëÇÏ´Â »ê¾÷ÀÌ »õ·Ó°Ô ÁÖ¸ñ¹Þ°í ÀÖ´Ù. À̵é ģȯ°æ¿¡³ÊÁö ÀÌ¿ëÀ» À§ÇÑ °­Àç´Â ±âÁ¸ ¿¡³ÊÁö °­À縦 ´ëÇ¥ÇÏ´Â ¶óÀÎÆÄÀÌÇÁ¿ë °­Àç¿Í ´Þ¸® º¸´Ù ¾ö°ÝÇÑ ¹°¼º°ú ±ØÈĹ° °­À縦 ¿ä±¸ÇÏ°í ÀÖÀ¸¸ç, ¿¡³ÊÁö »ý»ê°ú ÀÌ¿ë¿¡¼­ È¿À²À» ³ôÀ̱â À§ÇÏ¿© ¿ä±¸µÇ´Â ¹°¼ºÀº º¸´Ù ¾î·Á¿ö Áö°í ÀÖ´Ù. LNG´Â õ¿¬°¡½ºÀÇ ¾×È­»óŸ¦ À¯ÁöÇϱâ À§ÇÏ¿© -196oC¿¡¼­ °ßµô ¼ö ÀÖ´Â °­À縦 ¿ä±¸Çϸç 9%Ni °­, ½ºÅ×Àθ®½º°­ ¹× Invar °­ÀÌ »ç¿ëµÇ¾î ¿Ô´Ù. ÀÌµé °­Àç ´ëºñ °¡°Ý°æÀï·ÂÀÌ ¿ì¼öÇÑ °í Mn°­ÀÌ °³¹ßµÇ¾î LNG À°»óÀúÀåÅÊÅ©¿Í LNGÃßÁø¼± ¿¬·áÅÊÅ©¿¡ Àû¿ëÀÌ µÇ±â ½ÃÀÛÇÏ¿´´Ù. dz·Â¹ßÀü¿¡ À־´Â ÇØ»ódz·Â ¼³Ä¡ Áõ°¡°¡ À¯·´¿¡¼­ ½ÃÀ۵Ǿî Á¡Â÷ µ¿³²¾Æµî Àü¼¼°è Áö¿ªÀ¸·Î È®´ëµÇ°í ÀÖ´Ù. À°»ódz·Â¿ëÀº ÀÏ¹Ý ±¸Á¶¿ë °­À縦 »ç¿ëÇÏÁö¸¸ ÇØ»ódz·ÂÀº Ÿ¿ö¿ë °­Àç »Ó¸¸ ¾Æ´Ï¶ó ÇϺα¸Á¶¹°¿ë °­Àç°¡ ÇÊ¿äÇϸç ÀÌµé °­Àç´Â ¼³Ä¡ºñ¿ë ¹× ¾ÈÁ¤¼º È®º¸¸¦ À§ÇÏ¿© µÎ²² 100mm ÀÌ»óÀÇ °í°­µµ °íÀμº °­Àç°¡ ¿ä±¸µÇ°í ÀÖÀ¸¸ç, ³»ÇÇ·ÎƯ¼º°ú ³»½Ä¼ºµî ºÎ°¡±â´ÉÀ» Çâ»ó½ÃŲ °­Àç¿¡ ´ëÇÑ °³¹ßÀÌ ÇÊ¿äÇÏ´Ù. ÃÖ±Ù ¹Ì·¡¿¡³ÊÁö·Î ¼ö¼Ò¿¡ ´ëÇÑ °ü½ÉÀÌ ³ô¾ÆÁö¸é¼­ ¾ÕÀ¸·Î´Â ¼ö¼Ò»çȸ ±¸Çö¿¡ ÇÊ¿äÇÑ ÀÎÇÁ¶ó ±¸ÃàÀ» À§ÇÑ °­Àç °³¹ßÀ» ¼­µÑ·¯¾ß ÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù. ¼ö¼Ò¿ë °­Àç¿¡ À־ È®º¸ÇØ¾ß ÇÒ ÁÖ¿äÇÑ ±â¼úÀº °í¾Ð¼ö¼Ò¿ë °­Àç¿¡¼­´Â 1GPa±Þ °­µµ¿¡¼­ ³»¼ö¼ÒÃ뼺À» È®º¸ÇÏ´Â °ÍÀÌ°í, ¾×È­¼ö¼Ò¿ë °­Àç¿¡¼­´Â ¼ö¼ÒÀÇ ¾×È­¿ÂµµÀÎ -253oC¿¡¼­ ÀμºÀ» È®º¸ÇÏ´Â °ÍÀÌ´Ù. Àü ¼¼°èÀûÀ¸·Î CO2 Àú°¨À» À§ÇÑ ³ë·ÂÀÌ ÁøÇàµÇ°í ÀÖÀ¸¸ç, È­¼®¿¬·áº¸´Ù´Â ģȯ°æ¿¡³ÊÁö¿¡ ´ëÇÑ ¼ö¿ä°¡ Áõ°¡ÇÏ°í ÀÌ¿¡ µû¶ó ģȯ°æ¿¡³ÊÁö¿ë °­ÀçÀÇ °³¹ß °¡¼ÓÈ­°¡ ÇÊ¿äÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù. ƯÈ÷ ¼ö¼Ò¿ë °­Àç¿¡ ´ëÇÑ °³¹ßÀº ½ÃÀÛ´Ü°è·Î ¼ö¼Ò Value ChainÀÇ ¹ßÀü µ¿ÇâÀ» ¸é¹ÐÈ÷ ¸ð´ÏÅ͸µ Çϸ鼭 °­Àç°³¹ßÀ» ¼­µÑ·¯ ÃßÁøÇØ¾ß ÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.