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公开(公告)号：KR1020110130929A
公开(公告)日：2011-12-06
申请号：KR1020100050493
申请日：2010-05-28
Applicant: 한국과학기술원
CPC classification number: C23C14/16 , C21D1/09 , C23C14/24 , C23C14/5813
Abstract: PURPOSE: A method for preparing a nickel-based alloy having a modified surface is provided to improve the oxidation-resistance and corrosion-resistance of a nickel-based alloy by consecutively supplying a large amount of aluminum to a cracked oxide film. CONSTITUTION: A method for preparing a nickel-based alloy having a modified surface is as follows. Aluminum or nickel aluminide is physically plated on the surface of a nickel based alloy. A laser beam is irradiated to the nickel based alloy plated with the aluminum or nickel aluminide.
Abstract translation: 目的：提供一种制备具有改性表面的镍基合金的方法，以通过连续向裂纹氧化膜供应大量的铝来提高镍基合金的抗氧化性和耐腐蚀性。 构成：制备具有改性表面的镍基合金的方法如下。 铝或镍铝化物被物理地镀在镍基合金的表面上。 将激光束照射到镀铝或镍铝化合物的镍基合金上。
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公开(公告)号：KR101373256B1
公开(公告)日：2014-03-11
申请号：KR1020120031924
申请日：2012-03-28
Applicant: 한국과학기술원
Abstract: 본 발명은 확산 접합된 니켈계 합금의 열처리 방법에 관한 것이다. 본 발명에 따르면, 확산 접합된 니켈계 합금을 소정의 조건으로 열처리할 경우, 확산 접합에 의한 접합면의 미세조직이 모재와 동등한 수준으로 개선될 수 있고, 고온 조건 하에서도 상당한 수준의 연신율을 확보할 수 있어, 보다 폭넓은 재료의 설계 및 응용을 가능케 한다.
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公开(公告)号：KR1020130109845A
公开(公告)日：2013-10-08
申请号：KR1020120031925
申请日：2012-03-28
Applicant: 한국과학기술원
Abstract: PURPOSE: A method for heat-treating the diffused junction nickel-based alloy is provided to improve the micro-structure and the mechanical property of the junction surface of a nickel-based alloy, bonded by the diffused junction, equal to a base material. CONSTITUTION: A method for heat-treating the diffused junction nickel-based alloy comprises the step of growing the crystal grain on a junction surface by heat-treating the diffused junction body of Haynes 230 which is a nickel-based alloy under the high temperature and pressure. The heat-treatment process performs the following steps: heating the diffused junction body at the temperature rising speed of 3 to 6 °C/min from the room temperature to 950 to 1050°C; heating the heated diffused junction body at the temperature rising speed of 0.5 to 2 °C/min up to 1150 to 1250°C; maintaining the heated diffused junction body for 90 to 110 hours at 1150 to 1250°C; and cooling the heated diffused junction body at the room temperature.
Abstract translation: 目的：提供一种热处理扩散结镍基合金的方法，以改善通过扩散结结合的镍基合金的接合表面的微结构和机械性能等于基材。 构成：用于热处理扩散结镍基合金的方法包括通过在高温下对作为镍基合金的Haynes 230的扩散连接体进行热处理，在结合面上生长晶粒的步骤，以及 压力。 热处理工序进行以下步骤：以3〜6℃/分钟的升温速度将扩散连接体从室温加热到950〜1050℃; 以0.5〜2℃/ min的升温速度将加热的扩散连接体加热至1150〜1250℃; 在1150〜1250℃保持热扩散连接体90〜110小时; 并在室温下冷却加热的扩散连接体。
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公开(公告)号：KR1020130109844A
公开(公告)日：2013-10-08
申请号：KR1020120031924
申请日：2012-03-28
Applicant: 한국과학기술원
Abstract: PURPOSE: A method for heat-treating the diffused junction nickel-based alloy is provided to improve the micro-structure and the mechanical property of the junction surface of a nickel-based alloy, bonded by the diffused junction, equal to a base material. CONSTITUTION: A method for heat-treating the diffused junction nickel-based alloy comprises the step of growing the crystal grain on a junction surface by heat-treating the diffused junction body of alloy 617 which is a nickel-based alloy under the high temperature and pressure. The heat-treatment is performed through the next step. Under the condition of the pressure of 1×10-7 torr or 1×10-5 torr, the diffused junction body is heated at a temperature rising speed of 3 to 6 °C/min from the room temperature up to 1000 to 1200°C. The heated diffused junction body is maintained for 15 to 25 hours at 1000 to 1200°C. The heated diffused junction body is cooled to the room temperature.
Abstract translation: 目的：提供一种热处理扩散结镍基合金的方法，以改善通过扩散结结合的镍基合金的接合表面的微结构和机械性能等于基材。 构成：用于热处理扩散结镍基合金的方法包括通过在高温下对作为镍基合金的合金617的扩散接合体进行热处理，在接合面上生长晶粒的步骤，以及 压力。 热处理通过下一步进行。 在1×10-7乇或1×10-5乇的压力条件下，扩散连接体以3〜6℃/ min的升温速度从室温加热至1000〜1200° C。 加热的扩散连接体在1000至1200℃下保持15至25小时。 被加热的扩散连接体被冷却到室温。
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公开(公告)号：KR101373255B1
公开(公告)日：2014-03-11
申请号：KR1020120031925
申请日：2012-03-28
Applicant: 한국과학기술원
Abstract: 본 발명은 확산 접합된 니켈계 합금의 열처리 방법에 관한 것이다. 본 발명에 따르면, 확산 접합된 니켈계 합금을 소정의 조건으로 열처리할 경우, 확산 접합에 의한 접합면의 미세조직이 모재와 동등한 수준으로 개선될 수 있고, 고온 조건 하에서도 상당한 수준의 연신율을 확보할 수 있어, 보다 폭넓은 재료의 설계 및 응용을 가능케 한다.
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Patent Agency Ranking
公开(公告)号：KR101258505B1
公开(公告)日：2013-04-26
申请号：KR1020110024924
申请日：2011-03-21
Applicant: 한국과학기술원
Abstract: 본 발명은 니켈기 초합금(Ni-base superalloy)의 표면에 미세 합금화층을 형성하여 니켈기 초합금 표면을 개질하는 방법에 관한 것으로서, 니켈기 초합금(Ni-base superalloy)의 표면을 실리콘 카바이트(SiC)로 연마하는 단계, 상기 연마된 니켈기 합금의 표면에 알루미늄을 증착하는 단계 및 상기 알루미늄이 증착된 니켈기 합금의 표면을 진공 챔버 내에 넣고, 전자빔을 조사하여 표면에 미세 합금화층을 형성하는 것을 특징으로 하며, 본 발명에 따른 표면 미세 합금화된 니켈기 초합금은 전자빔을 이용해 니켈기 초합금의 표면을 미세 합금화 시킴으로써 고온 산화 환경 하에서 안정적인 보호피막을 형성하여 장기간 사용 시에도 건전성(integrity)을 유지할 수 있으며, 전자빔을 이용해 표면 근처의 조성 및 미세구조를 바꾸어 니켈기 초합금의 고온 산화 저항성을 향상시키고 및 우수한 크립 특성을 가져서 차세대 초고온 가스 냉각로의 열교환기 및 고온 가스로에 활용할 수 있다.
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公开(公告)号：KR1020110130931A
公开(公告)日：2011-12-06
申请号：KR1020100050495
申请日：2010-05-28
Applicant: 한국과학기술원
CPC classification number: C23C14/14 , C23C14/24 , C23C14/5806
Abstract: PURPOSE: A method of manufacturing surface-reformed nickel-base alloy is provided to enhance long-term oxidation resistance and corrosion resistance since aluminum can be continuously supplied. CONSTITUTION: A method of manufacturing surface-reformed nickel-base alloy comprises next steps. Aluminum or nickel aluminide is physically deposited on the surface of nickel-base alloy(a first step). An inter-diffusion thermal treating process is performed under a temperature of 550~650°C(a second step). The thickness of an aluminum or nickel aluminide deposited layer formed by the first step is 3 ~ 6μm. An inter-metal compound coated layer of Al3Ni2 is formed on the surface of the nickel-base alloy from the second step. The thickness of the inter-metal compound coated layer is 10 ~ 20μm.
Abstract translation: 目的：提供一种表面改性镍基合金的制造方法，以提高长期的抗氧化性和耐腐蚀性，因为可以连续供应铝。 构成：表面改性镍基合金的制造方法包括下面的步骤。 铝或镍铝化物物理沉积在镍基合金的表面上（第一步）。 在550〜650℃（第二步骤）的温度下进行扩散扩散热处理。 由第一步形成的铝或镍铝化物沉积层的厚度为3〜6μm。 从第二步骤在镍基合金的表面上形成Al 3 Ni 2的金属间化合物涂层。 金属间化合物涂层的厚度为10〜20μm。
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公开(公告)号：KR1020110130930A
公开(公告)日：2011-12-06
申请号：KR1020100050494
申请日：2010-05-28
Applicant: 한국과학기술원
Abstract: PURPOSE: A diffusion bonding method of nickel-base alloy is provided to enable stable manufacturing of a heat exchanger at a temperature of over 900°C, which is an operation condition of an ultra-high gas cooling furnace. CONSTITUTION: A diffusion bonding method of nickel-base alloy comprises next steps. Aluminum or nickel aluminide is physically deposited on the surface of the nickel-base alloy(a first step). An inter-diffusion thermal treating process is performed under a temperature of 550 ~ 650°C to form an inter-metal compound layer(a second step). A diffusion bonding process is performed between two kinds of nickel-base alloy with the inter-metal compound layer manufactured from the second step, using the inter-metal compound layer as a bonding unit(a third step). The diffusion-bonded nickel-base alloy manufactured from the diffusion bonding method of the nickel-base alloy is provided.
Abstract translation: 目的：提供镍基合金的扩散接合方法，以便能够在超过900℃的温度下稳定地制造超高温气体冷却炉的运行状态。 构成：镍基合金的扩散接合方法包括以下步骤。 铝或镍铝化物物理沉积在镍基合金的表面上（第一步）。 在550〜650℃的温度下进行互扩散热处理，形成金属间化合物层（第二工序）。 在使用金属间化合物层作为接合单元的第二步骤制造的两种镍基合金与金属间化合物层之间进行扩散接合工艺（第三步骤）。 提供了由镍基合金的扩散接合方法制造的扩散接合的镍基合金。
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公开(公告)号：KR101527112B1
公开(公告)日：2015-06-08
申请号：KR1020100050494
申请日：2010-05-28
Applicant: 한국과학기술원
Abstract: 본발명은니켈기합금의확산접합방법에관한것으로서, 보다구체적으로 1) 니켈기합금의표면에알루미늄또는니켈알루미나이드를물리적증착시키는단계, 2) 550 ~ 650℃의온도하에서상호확산열처리(inter-diffusion heat treatment) 공정을수행하여금속간화합물층(Intermetallic compound layer)을형성하는단계, 및 3) 상기 2) 단계로부터제조되는금속간화합물층이형성된니켈기합금 2종간에상기금속간화합물층을접합부로하여확산접합공정을수행하는단계를포함한다. 본발명에따라제조되는확산접합된니켈기합금은접합력이우수하고, 고온부식저항성을향상시킬수 있다.
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公开(公告)号：KR1020120107301A
公开(公告)日：2012-10-02
申请号：KR1020110024924
申请日：2011-03-21
Applicant: 한국과학기술원
Abstract: PURPOSE: A method of surface modification of a nickel-based superalloy by electron beam induced surface alloying is provided to obtain a protective coating that is stable in high-temperature oxidation conditions and thereby maintains the integrity of the nickel-based superalloy for long-time use. CONSTITUTION: A method of surface modification of a nickel-based superalloy by electron beam induced surface alloying comprises the steps of: grinding the surface of the nickel-based superalloy with a silicon carbide, depositing aluminum on the ground surface of the nickel-based superalloy, loading the superalloy in a vacuum chamber, and irradiating the superalloy with electron beams to form a micro-alloy layer on the superalloy surface.
Abstract translation: 目的：提供通过电子束诱导表面合金化对镍基超级合金进行表面改性的方法，以获得在高温氧化条件下稳定的保护涂层，从而长期保持镍基超级合金的完整性 使用。 构成：通过电子束诱导的表面合金化对镍基超级合金进行表面改性的方法包括以下步骤：用碳化硅研磨镍基超级合金的表面，在镍基超级合金的地面上沉积铝 ，将超合金加载到真空室中，并用电子束照射超合金以在超合金表面上形成微合金层。
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