公开(公告)号：KR1020040096756A

公开(公告)日：2004-11-17

申请号：KR1020030039879

申请日：2003-06-19

Applicant: 한국전력공사

Inventor： 김민태 ,  정진성 ,  김의현

IPC: C22C38/18

Abstract: PURPOSE: To reduce damage of parts for slurry pumps and extend life cycle of the slurry pumps by properly controlling contents of chromium (Cr), nickel (Ni) and molybdenum (Mo) in a material for impeller and liner of the slurry pumps, thereby improving corrosion resistance and abrasion resistance of the slurry pumps. CONSTITUTION: The alloy material for slurry pumps of flue gas desulfurization system comprises 26 to 32 wt.% of chromium (Cr), 1.7 to 2.7 wt.% of carbon (C), 1.5 to 2.5 wt.% of nickel (Ni), 1.5 to 2.5 wt.% of molybdenum (Mo), traces of silicon (Si), phosphorus (P), sulfur (S), vanadium (V) and manganese (Mn), and a balance of iron (Fe).

Abstract translation: 目的：通过适当控制泥浆泵叶轮和衬套材料中铬（Cr），镍（Ni）和钼（Mo）的含量，减少泥浆泵的零件损坏，延长浆料泵的寿命，从而 提高泥浆泵的耐腐蚀性和耐磨性。 构成：用于烟道气脱硫系统的浆料泵的合金材料包括铬（Cr）26-32重量％，碳（C）1.7-2.7重量％，镍（Ni）1.5-2.5重量％ 1.5〜2.5重量％的钼（Mo），痕量的硅（Si），磷（P），硫（S），钒（V）和锰（Mn）和余量的铁（Fe）。

公开(公告)号：KR1020040037445A

公开(公告)日：2004-05-07

申请号：KR1020020065928

申请日：2002-10-28

Applicant: 한국전력공사

Inventor： 김의현 ,  김민태 ,  장동식 ,  정진성

IPC: C21D1/70

Abstract: PURPOSE: A preliminary oxidation method for extending life time of thermal barrier coating applied to gas turbine operated at high temperature by simply performing thermal treatment in an existing coating process is provided. CONSTITUTION: In a preliminary oxidation method applied to the parts of gas turbine operated at high temperature by blasting the surface of a matrix of IN738LC that is a nickel based superalloy having a composition comprising 16.0 wt.% of Ni, 8.5 wt.% of Cr, 1.7 wt.% of Co, 2.6 wt.% of Mo, 1.7 wt.% of W, 0.9 wt.% of Ta, 3.4 wt.% of Nb, 3.4 wt.% of Al, 0.11 wt.% of Ti and a balance of C, coating a metallic intermediate bonding layer on the surface of the matrix using powder of Ni-211(Ni-22Cr-10Al-1Y) (wt.%) by air plasma spraying, forming an upper ceramic layer on the metallic intermediate bonding layer using powder of ZrO2-8Y2O3 (wt.%), and heat treating the upper ceramic layer coated material at 1,050 deg.C and in vacuum atmosphere for 4 hours, the preliminary oxidation method is characterized in that thermal treatment is performed at 1,050 deg.C in air for 1 to 50 hours so that a stable aluminum oxide is formed on the surface of the metallic intermediate bonding layer by the thermal treatment after coating the metallic intermediate bonding layer on the matrix.

Abstract translation: 目的：提供一种预热氧化方法，用于延长在高温下运行的燃气轮机的热障涂层的使用寿命，只需在现有的涂层工艺中进行热处理即可。 构成：在通过喷射IN738LC基质表面的初步氧化方法中，该反应器是具有组成包含16.0重量％Ni，8.5重量％Cr的镍基超级合金的基体的表面 ，1.7重量％的Co，2.6重量％的Mo，1.7重量％的W，0.9重量％的Ta，3.4重量％的Nb，3.4重量％的Al，0.11重量％的Ti和 余量为C，使用Ni-211（Ni-22Cr-10Al-1Y）粉末（重量％）通过空气等离子体喷涂在基体表面上涂覆金属中间粘结层，在金属上形成上层陶瓷层 中间粘合层，使用ZrO2-8Y2O3粉末（重量％），在1050℃，真空气氛下将上层陶瓷层涂覆材料热处理4小时，其特征在于热处理在 在空气中1050℃下进行1至50小时，以便通过热量在金属中间粘合层的表面上形成稳定的氧化铝 在基体上涂覆金属中间粘合层后进行处理。

公开(公告)号：KR102170813B1

公开(公告)日：2020-10-28

申请号：KR1020130080410

申请日：2013-07-09

Applicant: 한국전력공사 ,  한국남동발전 주식회사 ,  한국중부발전(주)

Inventor： 정용찬 ,  이태희 ,  김민태 ,  김기태

IPC: C23C16/455 ,  C23C16/452 ,  C23C16/453

公开(公告)号：KR1020160027412A

公开(公告)日：2016-03-10

申请号：KR1020140114088

申请日：2014-08-29

Applicant: 한국전력공사

Inventor： 김민태 ,  정용찬 ,  이주형 ,  김기홍

IPC: C23C26/00 ,  C23C30/00

CPC classification number: C23C26/00 ,  C21D9/08 ,  C23C2/12 ,  C23C30/00

Abstract: 금속튜브의 Al 도금방법이개시된다. 본발명의일 측면인금속튜브의 Al 도금방법은, 금속튜브를준비하는단계; 상기금속튜브의외면에 Al계금속와이어를일정간격으로권선하는단계; 상기 Al계금속와이어가권선된금속튜브의외면에플럭스(flux)를도포하는단계; 및상기플럭스(flux)가도포된금속튜브를유도가열하여, 금속튜브의외면에 Al 도금층을형성하는단계를포함한다.

Abstract translation: 公开了一种用于金属管的镀铝方法。 根据本发明的一个方面的用于金属管的Al镀覆方法包括：制备金属管的步骤; 将铝基金属丝缠绕在金属管的外表面上的步骤; 在Al基金属丝缠绕的金属管的外表面上涂布助焊剂的工序; 以及通过感应加热涂覆有焊剂的金属管，在金属管的外表面上形成Al镀层的步骤。 本发明的Al镀覆方法可以显着提高金属管的耐高温氧化性和耐腐蚀性。

公开(公告)号：KR101125329B1

公开(公告)日：2012-03-27

申请号：KR1020090058581

申请日：2009-06-29

Applicant: 한국전력공사

Inventor： 김민태 ,  김두수 ,  오원영

IPC: B05D5/00 ,  B05D7/14 ,  B05D1/08

CPC classification number: C23C4/04 ,  C23C4/02 ,  C23C4/11 ,  C23C4/12 ,  C23C4/123 ,  C23C18/122 ,  C23C18/1225 ,  C23C18/1241 ,  F01D5/288 ,  F02C3/30 ,  F05D2230/90 ,  F05D2260/60 ,  Y02T50/67 ,  Y02T50/671

Abstract: 본 발명은 가스터빈의 운전 중에 상기 가스터빈에서 연료의 연소가스와 접하는 부분의 표면에 기저층이 형성되도록 제1 조건하에서 실리콘을 함유하는 유기화합물을 상기 연료에 첨가하는 단계와, 상기 기저층 위에 상기 기저층 보다 많은 기공을 가지는 다공성층이 형성되도록 제2 조건하에서 실리콘을 함유하는 유기화합물을 상기 연료에 첨가하는 단계를 포함하는 가스터빈의 운전 중 열차폐 코팅층 형성방법을 제공한다.

公开(公告)号：KR1020080040343A

公开(公告)日：2008-05-08

申请号：KR1020060108179

申请日：2006-11-03

Applicant: 한국전력공사

Inventor： 김민태 ,  장성용 ,  원종범

IPC: F02C7/30 ,  F02C7/22 ,  F02C3/20

CPC classification number: C23C26/00 ,  C10L1/28 ,  C10L1/285 ,  C10L3/003 ,  C10L10/04 ,  Y02E20/16 ,  Y02T50/67

Abstract: 본발명은가스터빈의운전을위하여사용되는 LNG나경유등의연료에실리콘과같은금속성분이포함된유기화합물을첨가, 또는연소공기에별도로분무하여연료와같이연소하도록하여가스터빈운전중에고속으로회전하는가스터빈의블레이드를포함하는고온부품에이산화규소와같은내식, 내산화물질을효과적으로증착하여가스터빈고온부품의내구성을향상시키는방법에관한것으로서, 실리콘유기화합물이연료와같이연소됨으로써생성되는이산화규소가고온연소기체에노출되는모든가스터빈고온부품에균일하게퇴적하여수 내지수십μm 두께의산화물코팅층이입혀지도록하는가스터빈운전중에내식, 내산화층을형성시키는것을특징으로한다.

Abstract translation: 提供一种使用燃料添加剂在燃气轮机的热气路部件上形成耐腐蚀和抗氧化涂层的方法，通过将包括诸如硅的金属成分的有机化合物加入到燃料中来改善耐腐蚀和抗氧化性能。 通过使用燃料添加剂在燃气轮机的热气体路径部件上形成腐蚀和抗氧化涂层的方法包括将包括气态金属或液态金属的金属有机物质添加到燃气轮机的燃料或喷射金属有机物的步骤 燃烧空气。 当燃气轮机运行时，金属有机物被燃烧。 具有高耐热性的金属氧化物涂覆在燃气轮机运转期间与燃烧气体接触的部件的表面上。

公开(公告)号：KR100663204B1

公开(公告)日：2007-01-02

申请号：KR1020050100729

申请日：2005-10-25

Applicant: 한국전력공사

Inventor： 김민태 ,  장성용 ,  오원영 ,  원종범

IPC: B23K9/04

Abstract: A method of curing weld defects of ni-based superalloy components for a gas turbine is provided to cure a coagulation crack or a liquefaction crack by processing ni-based superalloy components at high temperature and pressure with an HIP device. After overlay-welding a damaged part of ni-based superalloy components regenerated in a gas turbine driving at high temperature in a traditional way such as a TIG(Tungsten Inert Gas) welding, a plasma welding or a razor welding, a method of curing weld defects of Ni-based superalloy components for a gas turbine processes the component under the condition of high temperature 1000‹C~1250‹C, and high pressure 1000 atm ~ 1500 atm by using an HIP(Hot Isostatic Press) device.

Abstract translation: 提供了一种固化用于燃气轮机的ni基超级合金部件的焊接缺陷的方法，以通过用HIP装置在高温高压下处理ni基超级合金部件来凝固凝结裂纹或液化裂纹。 在以TIG（钨惰性气体）焊接，等离子焊接或剃刀焊接等传统方式在高温驱动的燃气轮机中再生的镍基超级合金构件的损坏部分之后，重叠焊接固化焊接 通过使用HIP（热等静压机）装置，在高温1000℃〜1250℃，高压1000atm〜1500atm的条件下处理该部件的燃气涡轮用Ni基高温合金部件的缺陷。

公开(公告)号：KR1020050009471A

公开(公告)日：2005-01-25

申请号：KR1020030048797

申请日：2003-07-16

Applicant: 한국전력공사

Inventor： 김민태 ,  오제명 ,  이중범 ,  지준화

IPC: C10M171/06 ,  B82Y30/00

Abstract: PURPOSE: Provided are lubricant oil, and improved lubricating and cooling system for turbine rotor having improved efficiency and endurance by providing lubricant oils having excellent cooling and lubricant property. CONSTITUTION: The lubricant oil contains from 0.2 to 3 vol.% of carbon nano-tube having from 20 to 100 nm in diameter and from 10 to 100 micrometers in length. The lubricant oil is prepared by mixing the carbon nano-tube with lubricant oil for turbine rotor; mixing oleic acid as surfactant to disperse the carbon nano-tube uniformly; and treating the mixture of nano particles and lubricant oil by means of ultrasonic oscillator for 10 hours. The content of carbon nano-tube is preferably from 0.2 to 3 vol.% in terms of the friction coefficiency and the thermal transmittance. In improved lubricating and cooling system for turbine rotor, lubricant oil(42) heated by shear movement on the surface of bearing and journal(41) is recovered into lubricant oil tank and then cooling is performed by assistant cooling water(46) in oil cooler(43).

Abstract translation: 目的：提供润滑油，通过提供具有优异的冷却和润滑性能的润滑油，提高了涡轮转子的润滑和冷却系统，提高了效率和耐久性。 构成：润滑油含有0.2〜3体积％的直径为20〜100nm，长度为10〜100微米的碳纳米管。 通过将碳纳米管与涡轮转子用润滑油混合来制备润滑油; 混合油酸作为表面活性剂均匀分散碳纳米管; 并用超声波振荡器处理纳米颗粒和润滑油的混合物10小时。 碳纳米管的含量以摩擦系数和热透射率计优选为0.2〜3体积％。 在改进的涡轮转子润滑和冷却系统中，通过轴承和轴颈（41）表面上的剪切运动加热的润滑油（42）被回收到润滑油箱中，然后通过冷却水中的辅助冷却水（46）进行冷却 （43）。

公开(公告)号：KR1020030035017A

公开(公告)日：2003-05-09

申请号：KR1020010066875

申请日：2001-10-29

Applicant: 한국전력공사

Inventor： 정진성 ,  김민태 ,  김의현 ,  장동식

IPC: C23C10/30

CPC classification number: C23C10/56 ,  C22C21/02

Abstract: PURPOSE: A diffusion coating powder composition for obtaining diffusion layer of aluminum and silicon alloy having high corrosion resistance and oxidation resistance at high temperature on the surface of metal, and a powder diffusion coating method using the same are provided. CONSTITUTION: The powder composition for simultaneously coating aluminum and silicon on the surface of metal comprises 5 to 50 wt.% of silica (SiO2) as a silicon source for providing silicon; 5 to 30 wt.% of aluminum (Al) for reducing silica into silicon; 2 to 5 wt.% of halide as an activator for activating the reduced silicon and aluminum; and 15 to 85 wt.% of non-reactive filler for preventing condensation, wherein the halide is sodium chloride (NaCl) or sodium fluoride (NaF), and wherein the non-reactive filler is alumina (Al2O3). The method for simultaneously coating aluminum and silicon on metal surface comprises a step (A) of preparing the powder composition for simultaneously coating aluminum and silicon on the surface of metal; and a step (B) of simultaneously coating aluminum and silicon on the surface of the metal by sealing the container or heating the container at a temperature of 800 to 1,200 deg.C for 1 to 30 hours under the inert gas or hydrogen atmosphere after putting the composition into a heat resistant container and burying a metal to be coated under the composition in the container.

Abstract translation: 目的：提供一种用于获得在金属表面具有高耐腐蚀性和抗氧化性的铝和硅合金的扩散层的扩散涂层粉末组合物和使用其的粉末扩散涂覆方法。 构成：在金属表面上同时涂覆铝和硅的粉末组合物包含5至50重量％的二氧化硅（SiO 2）作为用于提供硅的硅源; 5至30重量％的用于将二氧化硅还原成硅的铝（Al）; 2至5重量％的卤化物作为活化还原的硅和铝的活化剂; 和15〜85重量％的用于防止冷凝的非反应性填料，其中卤化物是氯化钠（NaCl）或氟化钠（NaF），其中非反应性填料是氧化铝（Al 2 O 3）。 在金属表面上同时涂覆铝和硅的方法包括制备粉末组合物以在金属表面上同时涂覆铝和硅的步骤（A）; 以及通过在惰性气体或氢气氛下在800-1200℃的温度下密封容器或加热容器1至30小时，同时在金属表面上涂覆铝和硅的步骤（B） 将该组合物装入耐热容器中并将待涂覆的金属埋在该容器内的组合物下。