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1. 发明授权

US10557183B2 Work hardenable yield ratio-controlled steel and method of manufacturing the same 有权
公开(公告)号：US10557183B2
公开(公告)日：2020-02-11
申请号：US14811223
申请日：2015-07-28
申请人： Korea Institute of Machinery and Materials
发明人： Youngseon Lee , Chang Gil Lee
IPC分类号： C21D9/08 , C22C38/06 , C22C38/04 , C22C38/02 , C21D6/00 , C21D8/06
摘要： A method of manufacturing yield ratio-controlled steel, including the steps of subjecting alloy steel to rolling or wire drawing, thus obtaining a bar material; performing a first heat treatment, in which the material is heated and maintained for a predetermined period of time at a first temperature ranging from Ac1 to Ac3 based on Ac1 and Ac3 transformation temperatures; and cooling the material to a second temperature ranging from Mf to Ms based on a martensite start temperature (Ms) and a martensite finish temperature (Mf), and performing a second heat treatment, in which the material is maintained at the second temperature for a predetermined period of time.

2. 发明授权

US10253403B2 Method of manufacturing grain-refined aluminum-zinc-magnesium-copper alloy sheet 有权
公开(公告)号：US10253403B2
公开(公告)日：2019-04-09
申请号：US14573314
申请日：2014-12-17
申请人： KOREA INSTITUTE OF MACHINERY AND MATERIALS
发明人： Hyoung-Wook Kim , Yun-Soo Lee , Cha Yong Lim , Jae Hyung Cho
IPC分类号： C22F1/053 , B22D11/00 , B22D11/06 , C22C21/10
摘要： Provided is a method of manufacturing a grain-refined aluminum-zinc-magnesium-copper alloy sheet, including manufacturing an aluminum alloy sheet from an aluminum-zinc-magnesium-copper alloy melt by twin-roll strip casting, primarily rolling the aluminum alloy sheet manufactured in step 1, cold rolling the aluminum alloy sheet manufactured in step 2, and performing a heat treatment on the aluminum alloy sheet manufactured in step 3, thereby reducing processing time and cost by using twin-roll casting. Since grain refinement and homogenization of the sheet manufactured by the twin-roll casting are maximized by sequentially performing warm rolling, cold rolling, and a heat treatment on the sheet, elongation may be improved.

3. 发明授权

US10161061B2 Potassium sodium niobate ceramics with single crystal 有权
公开(公告)号：US10161061B2
公开(公告)日：2018-12-25
申请号：US15260320
申请日：2016-09-09
申请人： KOREA INSTITUTE OF MACHINERY AND MATERIALS
发明人： Cheol-Woo Ahn , Jung-Ho Ryu , Byung-Dong Hahn
IPC分类号： H01L41/18 , C30B29/30 , C30B29/22 , C30B1/04 , C04B35/495 , H01L41/187
摘要： Disclosed is a (K,Na)NbO3 (abbreviated by “KNN”)-based single crystal ceramic. The KNN-based single crystal ceramic according to the present disclosure is formulated by (K0.5−x/2Na0.5−x/2−y□y/2Mx+y/2)Nb1−x/3+yO3, wherein M indicates a metal having a different valence from Na, and □ indicates a metal vacancy. The above formulated KNN-based single crystal ceramic allows compensating for the volatilization of Na in a growing grain due to the addition of M2+ ions, and substituting M2+ ions for Na+ ions to form metal vacancies, thereby making possible the single crystal growth.

4. 发明授权

US10046360B2 Method for manufacturing aluminum electrode using solution process 有权
公开(公告)号：US10046360B2
公开(公告)日：2018-08-14
申请号：US13637235
申请日：2010-12-08
申请人： Hye Moon Lee , Dong-Won Lee , Jung-Yeul Yun
发明人： Hye Moon Lee , Dong-Won Lee , Jung-Yeul Yun
IPC分类号： B05D5/12 , C23C18/10 , B05D1/02 , B05D3/12 , B05D3/02 , B05D1/28
摘要： The present invention provides a method for manufacturing an aluminum electrode using a solution process and an aluminum electrode manufactured thereby. The manufacturing method includes the steps of: manufacturing an aluminum precursor solution for the solution processing using AlH3 as a basic material before forming aluminum; coating the aluminum precursor solution on a substrate through the solution process and drying the aluminum precursor solution; and forming a low work function aluminum electrode through a low-temperature baking process at the temperature of at most 150° C. The method for manufacturing the aluminum electrode according to the present invention improves a thermal defect of the electrode due to a high-temperature baking process, prevents excessive loss of raw materials, and can manufacture aluminum electrodes of various sizes with area ranging from small to large at relatively low costs and by a simple process under atmospheric pressure.

5. 发明授权

US09889234B2 Scaffold for hard tissue regeneration containing active ingredient for treating osteoporosis and preparing method thereof 有权
公开(公告)号：US09889234B2
公开(公告)日：2018-02-13
申请号：US14952471
申请日：2015-11-25
申请人： KOREA INSTITUTE OF MACHINERY AND MATERIALS
发明人： Hui-suk Yun
IPC分类号： A61K31/00 , A61L27/54 , B33Y10/00 , B33Y40/00 , B33Y70/00 , B33Y80/00 , B28B1/00 , A61L27/12
CPC分类号： A61L27/54 , A61L27/12 , A61L2300/112 , A61L2430/00 , A61L2430/02 , B28B1/001 , B33Y10/00 , B33Y40/00 , B33Y70/00 , B33Y80/00
摘要： A scaffold for hard tissue regeneration comprising an active ingredient for treating osteoporosis and a preparation method thereof. The scaffold for hard tissue regeneration is prepared by the steps of mixing a polyphenol-based natural substance containing Quercetein or Genistein involved in the activation of osteoblasts and osteoclasts and the biofunctional analog thereof with a ceramic scaffold material and molding the mixture at room temperature into a three-dimensional scaffold. The biofunctional material included in the scaffold above may be sustain-released slowly over the long period of time so that the osteoblast activity is directly improved and at the same time the osteoclast activity is suppressed in the course of bone regeneration, to have the effect of improving bone regeneration.

6. 发明授权

US09663850B2 High-performance high-nitrogen duplex stainless steels excellent in pitting corrosion resistance 有权
公开(公告)号：US09663850B2
公开(公告)日：2017-05-30
申请号：US14251349
申请日：2014-04-11
申请人： KOREA INSTITUTE OF MACHINERY AND MATERIALS
发明人： Heon Young Ha , Tae-Ho Lee , Byoung Chul Hwang
IPC分类号： C22C38/58 , C22C38/22 , C22C38/38 , C22C38/44 , C22C38/00 , C22C38/02 , C21D6/00
CPC分类号： C22C38/58 , C21D6/002 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/22 , C22C38/38 , C22C38/44
摘要： The present invention relates to high-nitrogen duplex stainless steels with an excellent eco-index and pitting corrosion resistance, in particular, to providing duplex stainless steels with ferrite-austenite phases, including: 16.5-19.5 wt. % of chromium (Cr), 2.3-3.5 wt. % of molybdenum (Mo), 1.0-5.5 wt. % of tungsten (W), 5.5-7.0 wt. % of manganese (Mn), 0.35-0.45 wt. % of nitrogen (N), with a remainder of iron (Fe). The high nitrogen duplex stainless steels with excellent eco-index and pitting corrosion resistance according to the present invention use manganese (Mn) and nitrogen (N) to exclude or mostly substitute Ni, which increases price instability of the steel grades and environment burden, to result in enhancing economic efficiency, price stability and eco-friendliness.

7. 发明授权

US09336922B2 Method of fabricating thermoelectric materials using core-shell structured nano-particles, and thermoelectric materials fabricated by the same 有权
标题翻译：使用核 - 壳结构化纳米颗粒制造热电材料的方法，以及由其制造的热电材料
公开(公告)号：US09336922B2
公开(公告)日：2016-05-10
申请号：US13552372
申请日：2012-07-18
申请人： Kyung Tae Kim , Gook Hyun Ha
发明人： Kyung Tae Kim , Gook Hyun Ha
IPC分类号： H01L35/16 , H01B1/20 , B82Y30/00 , H01L35/12 , H01L35/18 , H01L35/34
CPC分类号： H01B1/20 , B82Y30/00 , H01L35/12 , H01L35/16 , H01L35/18 , H01L35/34
摘要： A fabrication method of thermoelectric materials using core-shell structured nano-particles and thermoelectric materials fabricated by the same are provided. The method includes preparing core-shell structured nano-particles having thermoelectric elements coated on the surface thereof (step 1); adding and mixing the prepared core-shell structured nano-particles of step 1, bismuth (Bi) salts, tellurium (Te) salts and a surfactant in a solvent (step 2); adding and dispersing a reducing agent in the mixture of step (step 3); and heating the mixture of step 3 in which reducing agent is added and dispersed (step 4). According to the present invention, thermoelectric materials, nano-phase is homogeneously dispersed inside of thermoelectric grain boundary, can be fabricated and if the fabricated materials are used after sintering and bulking, the thermoelectric materials are maintained in a state that the nano-particles remain in dispersed phase even after sintering.
摘要翻译：提供了使用芯壳结构的纳米颗粒的热电材料及其制造的热电材料的制造方法。该方法包括制备具有涂覆在其表面上的热电元件的芯壳结构的纳米颗粒（步骤1）; 将制备的步骤1的核 - 壳结构纳米颗粒，铋（Bi）盐，碲（Te）盐和表面活性剂加入并混合在溶剂中（步骤2）; 在步骤（步骤3）的混合物中加入和分散还原剂; 并加热其中添加和分散还原剂的步骤3的混合物（步骤4）。根据本发明，可以制造热电材料纳米相均匀地分散在热电晶界内部，并且如果在烧结和膨胀之后使用制造的材料，则将热电材料保持在纳米颗粒保持的状态即使在烧结后也是分散相。

8. 发明申请

US20140271332A1 Method of Manufacturing Cold-rolled Magnesium Alloy Sheet for Improving Formability and Cold-rolled Magnesium Alloy Sheet Having Improved Formability Manufactured thereby 审中-公开
标题翻译：制造用于提高成形性的冷轧镁合金板的方法和由此制造的具有改进的成形性的冷轧镁合金板
公开(公告)号：US20140271332A1
公开(公告)日：2014-09-18
申请号：US14189549
申请日：2014-02-25
申请人： KOREA INSTITUTE OF MACHINERY AND MATERIALS
发明人： Se-Jong Kim , Young-Seon Lee
IPC分类号： B21B39/02 , B21B1/22 , C22C23/02
CPC分类号： B21B39/02 , B21B1/22 , B21B2001/221 , B21B2001/383 , B32B15/01 , C22C23/02 , C22F1/06
摘要： A method of manufacturing a cold-rolled magnesium alloy sheet for improving formability, including, (a) preparing a composite sheet which is composed of a main sheet made of magnesium alloy and a restrainer made of steel and functioning to suppress transverse plastic deformation (plastic deformation in a transverse direction) of the main sheet during a rolling process, (b) performing a cold-rolling of the composite sheet, and (c) separating the cold-rolled magnesium alloy sheet from the cold-rolled composite sheet obtained from (b). The magnesium alloy sheets manufactured by the invention has improved formability at an ambient temperature, and thus can be usefully applied to extensive industrial fields such as automobiles and aircrafts.
摘要翻译：一种制造用于提高成型性的冷轧镁合金板的制造方法，包括（a）制备由镁合金制的主板和由钢制成的抑制材料构成的复合片材，其功能是抑制横向塑性变形（塑料在轧制过程中，主板的横向变形），（b）进行复合板的冷轧，（c）将冷轧的镁合金板与从（ b）。本发明制造的镁合金板在环境温度下具有改善的成形性，因此可以有效地应用于广泛的工业领域如汽车和飞机。

9. 发明申请

US20140219857A1 HIGH-PERFORMANCE HIGH-NITROGEN DUPLEX STAINLESS STEELS EXCELLENT IN PITTING CORROSION RESISTANCE 有权
标题翻译：高性能高氮不锈钢优良的耐腐蚀性
公开(公告)号：US20140219857A1
公开(公告)日：2014-08-07
申请号：US14251349
申请日：2014-04-11
申请人： Korea Institute of Machinery and Materials
发明人： Heon Young HA , Tae-Ho LEE , Byoung Chul HWANG
IPC分类号： C22C38/58 , C22C38/00 , C22C38/22 , C22C38/02 , C22C38/44 , C22C38/38
CPC分类号： C22C38/58 , C21D6/002 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/22 , C22C38/38 , C22C38/44
摘要： The present invention relates to high-nitrogen duplex stainless steels with an excellent eco-index and pitting corrosion resistance, in particular, to providing duplex stainless steels with ferrite-austenite phases, including: 16.5-19.5 wt. % of chromium (Cr), 2.3-3.5 wt. % of molybdenum (Mo), 1.0-5.5 wt. % of tungsten (W), 5.5-7.0 wt. % of manganese (Mn), 0.35-0.45 wt. % of nitrogen (N), with a remainder of iron (Fe). The high nitrogen duplex stainless steels with excellent eco-index and pitting corrosion resistance according to the present invention use manganese (Mn) and nitrogen (N) to exclude or mostly substitute Ni, which increases price instability of the steel grades and environment burden, to result in enhancing economic efficiency, price stability and eco-friendliness.
摘要翻译：本发明涉及具有优异的生态指数和耐点腐蚀性的高氮双相不锈钢，特别涉及提供具有铁素体 - 奥氏体相的双相不锈钢，其包括：16.5-19.5wt。铬（Cr）％，2.3〜3.5重量％钼（Mo）的％，1.0-5.5重量％钨（W）％，5.5-7.0重量％锰（Mn）％，0.35-0.45重量％％的氮（N），剩余的铁（Fe）。根据本发明，具有优异的生态指数和耐点腐蚀性的高氮双相不锈钢使用锰（Mn）和氮（N）来排除或主要代替将钢种和环境负担的价格不稳定性增加的Ni 从而提高经济效益，价格稳定和生态友好。

10. 发明申请

US20140178139A1 METHOD OF MANUFACTURING SUPER HARD ALLOY CONTAINING CARBON NANOTUBES, SUPER HARD ALLOY MANUFACTURED USING SAME, AND CUTTING TOOL COMPRISING SUPER HARD ALLOY 审中-公开
标题翻译：制造含有碳纳米管的超硬合金的方法，使用其制造的超硬合金以及包含超硬合金的切割工具
公开(公告)号：US20140178139A1
公开(公告)日：2014-06-26
申请号：US14076460
申请日：2013-11-11
申请人： KOREA INSTITUTE OF MACHINERY AND MATERIALS
发明人： KyungTae KIM , GOOK-HYUN HA
IPC分类号： B22F5/00 , B23B27/14
CPC分类号： C22C26/00 , B22F3/225 , B22F2005/001 , C22C2026/002 , Y10T407/27
摘要： Disclosed is a method of manufacturing a super hard alloy containing carbon nanotubes, including (a) forming a carbon nanotube-metal composite from carbon nanotubes and metal powder, (b) mixing the carbon nanotube-metal composite obtained in (a) with hard-phase powder, (c) molding the powder mixture obtained in (b), and (d) sintering the molded body obtained in (c). In the method of the invention, the reaction between carbon nanotubes and transition metal carbide in the super hard alloy is minimized, thus maximizing an increase in toughness by virtue of the addition of carbon nanotubes, thereby obtaining the super hard alloy having both high hardness and high toughness. The super hard alloy containing carbon nanotubes manufactured using the method of the invention has high hardness and high toughness, and thus can be effectively utilized in cutting tools, molds, wear-resistant members, heat-resistant structural materials, etc.
摘要翻译：公开了一种制造含有碳纳米管的超硬合金的方法，其包括（a）从碳纳米管和金属粉末形成碳纳米管 - 金属复合物，（b）将（a）中得到的碳纳米管 - 金属复合物与硬质合金（c）成型（b）中得到的粉末混合物，（d）烧结（c）中得到的成型体。在本发明的方法中，超硬合金中的碳纳米管与过渡金属碳化物之间的反应最小化，由于添加碳纳米管而使韧性增加最大化，从而获得具有高硬度和高硬度的超硬合金高韧性使用本发明的方法制造的包含碳纳米管的超硬合金具有高硬度和高韧性，因此可有效地用于切削工具，模具，耐磨构件，耐热结构材料等。

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