公开(公告)号：KR100663975B1

公开(公告)日：2007-01-02

申请号：KR1020050098378

申请日：2005-10-19

Applicant: 한국교통대학교산학협력단

Inventor： 어순철 ,  김일호

IPC: H01L35/14 ,  H01L35/34

CPC classification number: H01L35/14 ,  H01L35/18 ,  H01L35/20 ,  H01L35/34

Abstract: A skutterudite-based thermoelectric material doped with Fe and a manufacturing method thereof are provided to manufacture a skutterudite alloy of CoSb3 having little micro crack through a simple process. Powders of Fe, Co, and Sb are prepared to obtain a composition of FexCo(4-x)Sb12, and then the powders are mixed. The mixed powders are subjected to a mechanical alloy process under an inert atmosphere. The powders subjected to the mechanical alloy process are subjected to a hot rolling and compression molding process. The mechanical alloy process is performed by an attritor.

Abstract translation: 提供掺杂Fe的方钴矿基热电材料及其制造方法，通过简单的工艺制造具有微小裂纹的CoSb3的方钴矿合金。 制备Fe，Co和Sb的粉末以获得FexCo（4-x）Sb12的组成，然后将粉末混合。 混合粉末在惰性气氛下进行机械合金处理。 对经过机械合金处理的粉末进行热轧和压缩加工。 机械合金工艺由磨碎机进行。

公开(公告)号：KR1020010018176A

公开(公告)日：2001-03-05

申请号：KR1019990034005

申请日：1999-08-17

Applicant: 한국교통대학교산학협력단

Inventor： 이정일 ,  김일호 ,  어순철 ,  이영근

IPC: B22D18/04

CPC classification number: B22D18/02 ,  B22D21/007

Abstract: PURPOSE: A method for manufacturing an alloy for squeeze casting is provided to improve castability by pressurizing effect during squeeze casting, and improve tensile strength by pressurizing and rapidly cooling effects due to squeeze casting. CONSTITUTION: A method for manufacturing an alloy for squeeze casting comprises the processes of choosing an alloy in which 1 to 7 wt.% of Fe is contained and AC4C alloy as starting alloys, melting the alloys at a temperature of 850 to 900 deg.C in an electric resistance furnace, gravity casting and squeeze casting the melted alloys with melt which is multi-gas treated within the range of 0.2 melt weight, manufacturing a sample in a bar shape having a size of 5 mm (diameter) x 10 cm (length) using a vertically pressurized type squeeze casting press (1) in the squeeze casting, wherein 750 deg.C of a temperature of the melt is maintained as an injection temperature, preheating a mold (4) at a temperature of 200 to 250 deg.C so that inner surface of the mold (4) and a punch (2) are coated with an oil based graphite releasing agent, and presetting a pressurizing pressure of 50 to 100 MPa, a pressurizing time of 60 sec, and a pressurizing rate of 20 mm/sec after injecting the melt.

Abstract translation: 目的：提供一种制造用于挤压铸造的合金的方法，以通过挤压铸造期间的加压效果来提高铸造性，并且通过挤压加压和快速冷却效果来提高拉伸强度。 构成：制造用于挤压铸造的合金的方法包括选择含有1至7重量％的Fe的合金和AC4C合金作为起始合金的方法，在850至900℃的温度下熔化合金 在电阻炉中，重力铸造并熔融熔融的熔融合金，该熔融合金在0.2熔体重量的范围内进行多气体处理，制造尺寸为5mm（直径）×10cm的棒状样品（ 长度），在挤压铸造中使用垂直加压型挤压铸造压力机（1），其中将熔体的温度保持750℃作为注射温度，在200至250℃的温度下预热模具（4） 使得模具（4）的内表面和冲头（2）涂覆有油基石墨脱模剂，并且预设加压压力为50至100MPa，加压时间为60秒，加压速率 注射熔体后为20mm / sec。

公开(公告)号：KR101569512B1

公开(公告)日：2015-11-16

申请号：KR1020140032944

申请日：2014-03-20

Applicant: 한국교통대학교산학협력단 ,  현대성우메탈 주식회사

Inventor： 어순철 ,  곽윤식 ,  김정호 ,  윤형석

IPC: G01N33/20

Abstract: 본발명은금속물성을예측할수 있는방법에관한것으로서, 특히저압주조법으로제조된알루미늄휠에사용되는알루미늄합금의기계적특성을용이하게예측할수 있는금속물성예측방법에관한것으로, 알루미늄합급재료에따른물성변환방정식을생성하는단계와생성된물성변환방정식에대해서중요도를설정하는단계와기계물성값중하나의기계물성값을입력하는단계와입력된기계물성값과생성된물성변환방정식을이용하여나머지기계물성값을계산하는단계로이루어진다.한편, 상기중요도를설정하는단계는오차범위가작은순서대로설정하고, 기계물성값으로는이차수지상정간격(SDAS),항복강도, 인장강도, 비커스경도, 브리넬경도, 피로강도, 충격에너지, 연신율이다.

公开(公告)号：KR1020150109738A

公开(公告)日：2015-10-02

申请号：KR1020140032944

申请日：2014-03-20

Applicant: 한국교통대학교산학협력단 ,  현대성우메탈 주식회사

Inventor： 어순철 ,  곽윤식 ,  김정호 ,  윤형석

IPC: G01N33/20

CPC classification number: G01N33/20

Abstract: 본발명은금속물성을예측할수 있는방법에관한것으로서, 특히저압주조법으로제조된알루미늄휠에사용되는금속소재의기계적특성을용이하게예측할수 있는금속물성예측방법에관한것으로, 금속재료에따른물성변환방정식을생성하는단계와생성된물성변환방정식에대해서중요도를설정하는단계와기계물성값중하나의기계물성값을입력하는단계와입력된기계물성값과생성된물성변환방정식을이용하여나머지기계물성값을계산하는단계로이루어진다. 한편, 상기중요도를설정하는단계는오차범위가작은순서대로설정하고, 기계물성값으로는이차수지상정간격(SDAS),항복강도, 인장강도, 비커스경도, 브리넬경도, 피로강도, 충격에너지, 연신율이다.

Abstract translation: 本发明涉及一种用于预测金属性质的方法，特别涉及一种用于预测能够容易地预测通过低压铸造工艺制造的铝合金车轮中使用的金属材料的机械特性的预测金属性能的方法。 用于预测金属性质的方法包括以下步骤：根据金属材料生成属性转换方程; 设置生成的属性转换方程的重要性; 输入机械性能值之一; 以及使用所输入的机械特性值和所生成的属性转换方程式计算其它机械特性值。 另外，设置重要性的步骤是将属性转换方程从小误差范围设置到大的误差范围。 机械性能值为二次枝晶臂间距（SDAS），拉伸强度，屈服强度，维氏硬度，布氏硬度，疲劳强度，冲击能和伸长率。

公开(公告)号：KR101371356B1

公开(公告)日：2014-03-07

申请号：KR1020120087917

申请日：2012-08-10

Applicant: 한국교통대학교산학협력단

Inventor： 윤만순 ,  어순철 ,  이영근

IPC: C01G49/00 ,  C01B25/37 ,  H01M10/052

Abstract: pH 조절을 이용한 FePO
4 제조 방법 및 이를 이용한 리튬이차전지 양극용 LiFePO
4 /C 제조 방법에 대하여 개시한다.
본 발명에 따른 FePO
4 제조 방법은 (a) 인산염 함유 용액에 3가 철 함유 물질을 첨가하는 단계; (b) 상기 (a) 단계의 결과 용액의 pH를 조절하여 FePO
4 를 침전시키는 단계; (c) 상기 침전된 FePO
4 를 여과하는 단계; 및 (d) 상기 여과된 FePO
4 를 건조하는 단계;를 포함하는 것을 특징으로 한다.

Abstract translation: 公开了使用pH控制的FePO 4的制造方法和锂二次电池的正极的LiFePO 4 / C的制造方法。 本发明的FePO 4的制造方法包括以下步骤：（a）将含有三价含铁材料添加到含磷酸盐溶液中的工序; （b）通过调节来自（a）步骤的溶液的pH来沉淀FePO 4的步骤; （c）过滤沉淀的FePO 4的步骤; 和（d）用于干燥过滤的FePO 4的步骤。 （附图标记）（AA）开始; （BB）结束; （S110）在H_3PO_4溶液中加入FeCl_3; （S120）通过添加NH_4OH沉淀FePO_4; （S130）洗涤/过滤; （S140）干燥; （S150）热处理

公开(公告)号：KR1020140019086A

公开(公告)日：2014-02-14

申请号：KR1020120082260

申请日：2012-07-27

Applicant: 한국교통대학교산학협력단

Inventor： 김일호 ,  어순철 ,  신동길

IPC: H01L35/34 ,  H01L35/12

CPC classification number: H01L35/14 ,  H01L35/34

Abstract: The present invention relates to a method for manufacturing a high manganese silicide-based thermoelectric material having excellent performance with low costs by hot pressing high manganese silicide powder, formed by planetary ball milling, in a vacuum state, the method comprising: a first step of mixing manganese powder and silicon powder according to the composition of MnSi1.75-x(0

Abstract translation: 本发明涉及一种在真空状态下通过行星式球磨制成的通过热压高硅化锰粉末而具有优异性能，低成本的高硅锰化物热电材料的方法，该方法包括：第一步骤 根据MnSi1.75-x（0≤x≤0.03）的组成混合锰粉和硅粉末; 通过行星式球磨制造高锰硅电力的第二步; 以及在真空状态下热压高硅锰化物粉末进行烧结的第三步骤。 通过行星式球磨形成的高锰硅粉末在真空状态下热压制造高锰硅化物热电材料，从而降低制造成本。 与现有技术相比，本发明的制造方法便宜，同时需要工艺条件的优化，本发明可以提供最佳的工艺条件。

公开(公告)号：KR101339880B1

公开(公告)日：2013-12-10

申请号：KR1020110112137

申请日：2011-10-31

Applicant: 한국교통대학교산학협력단

Inventor： 어순철 ,  김일호

IPC: C22C1/04

Abstract: 열전 특성이 우수한 고효율 열전 재료 및 그 제조방법을 제공한다. 이를 위하여, 원료물질인 Zr, Ni, Sn, Sb 분말을 혼합하여 혼합 분말을 제조하는 단계; 상기 혼합 분말을 기계적 합금화 처리하는 단계; 및 진공 핫 프레스 공정을 수행하는 단계를 포함하여 ZrNiSn
1
-x Sb
x (0

公开(公告)号：KR101330062B1

公开(公告)日：2013-11-18

申请号：KR1020120054297

申请日：2012-05-22

Applicant: 한국교통대학교산학협력단

Inventor： 어순철 ,  김일호

IPC: H01L35/34 ,  H01L35/12

CPC classification number: H01L35/14 ,  H01L35/34

Abstract: The present invention relates to a method for manufacturing a high manganese silicide thermoelectric material having excellent performance with a low cost by hot pressing high manganese silicide powder formed by a mechanical alloying in a vacuum state comprising a first step of mixing manganese powder and silicon powder according to the composition of MnSi1.75-x(0≤x≤0.04); a second step of manufacturing high manganese silicide power with a mechanical alloying; and a third step of hot pressing the high manganese silicide powder in the vacuum state for sintering. The present invention can drastically reduce a manufacturing cost compared to performing sintering by existing pulse carrying sintering or discharging plasma sintering as well as manufacturing high manganese silicide thermoelectric material having an excellent thermoelectric property by sintering high manganese silicide, which is manufactured by the mechanical alloying, by hot pressing in the vacuum state.

Abstract translation: 本发明涉及通过在真空状态下通过机械合金化而形成的高硅锰化物热压制成具有优异性能，低成本的高锰硅化物热电材料的方法，该方法包括：将锰粉末和硅粉末混合在一起的第一步骤， 对于MnSi1.75-x（0＆le; x＆le; 0.04）的组成; 用机械合金化制造高锰硅电力的第二步; 以及在真空状态下热压高硅锰化物粉末进行烧结的第三步骤。 与通过现有脉冲承载烧结或放电等离子体烧结进行烧结相比，本发明可以大大降低制造成本，并且通过烧结通过机械合金化制造的高锰硅化物制造具有优异热电性能的高锰硅热电材料， 通过在真空状态下热压。

公开(公告)号：KR101217567B1

公开(公告)日：2013-01-02

申请号：KR1020100138084

申请日：2010-12-29

Applicant: 한국교통대학교산학협력단

Inventor： 김경일 ,  유성웅 ,  김환기 ,  어순철 ,  홍태환

IPC: C22C23/00

Abstract: 본발명은마그네슘-티타늄계 수소저장합금에관한것으로, 마그네슘과티타늄의비율이 MgTi이고, 니켈이첨가원소로첨가되며, 수소가압기계적합금법으로제조되는과정에서형성된수소화물을포함하는것을특징으로한다. 또한, 본발명에의한마그네슘-티타늄계 수소저장합금의제조방법은, 순도 99% 이상의마그네슘, 티타늄및 니켈을절분의형태로준비하는단계; 상기마그네슘과상기티타늄을조성비가 8:2가되도록혼합하고, 상기니켈을첨가하여용기에장입하는단계; 상기용기를수소분위기로가압하는단계; 및수소가압된 분위기에서기계적합금화처리하는단계;를포함한다. 본발명은, Mg-Ti 계수소저장합금에탈수소화거동의촉매역할을하는 Ni을첨가함으로써, 수소저장합금의성능을향상시킬수 있는효과가있다. 또한, 수소가압기계적합금법으로제조되는과정에서형성된수소화물을포함하여초기활성화공정을배제할수 있는효과가있다. 나아가본 발명은기계적합금법을이용하여 Mg-Ti 계수소저장합금을제조함으로써, 합금화가어려운것으로알려진 Ni이첨가된 Mg-Ti 계수소저장합금을제조할수 있다.

公开(公告)号：KR1020120076089A

公开(公告)日：2012-07-09

申请号：KR1020100138084

申请日：2010-12-29

Applicant: 한국교통대학교산학협력단

Inventor： 김경일 ,  유성웅 ,  김환기 ,  어순철 ,  홍태환

IPC: C22C23/00

CPC classification number: C22C23/00 ,  C22C1/00 ,  C22C2202/04 ,  Y02E60/327

Abstract: PURPOSE: A magnesium-titanium based hydrogen storage alloys and a manufacturing method of the same are provided to add Ni taking a role of a catalyst of dehydrogenation for Mg-Ti system hydrogen storage alloy, thereby improving the performance of the hydrogen storage alloy. CONSTITUTION: A portion of magnesium and titanium of magnesium-titanium based hydrogen storage alloy is Mg_8Ti_2. Ni is added as an alloying element. Hydride formed in a hydrogen induced mechanical alloying is comprised. An amount of the added Ni is 5 to 25wt%. The hydride is one or more among Mg system hydride, Mg-Ni system hydride, Ti system hydride, and Ti-Ni system hydride.

Abstract translation: 目的：提供一种镁 - 钛基储氢合金及其制造方法，以加入对Mg-Ti系储氢合金进行脱氢催化剂的Ni，从而提高储氢合金的性能。 构成：镁 - 钛基储氢合金的镁和钛的一部分是Mg_8Ti_2。 添加Ni作为合金元素。 包括氢诱导的机械合金化形成的氢化物。 所添加的Ni的量为5〜25重量％。 氢化物是Mg系氢化物，Mg-Ni系氢化物，Ti系氢化物和Ti-Ni系氢化物中的一种或多种。