公开(公告)号：KR1019960021305A

公开(公告)日：1996-07-18

申请号：KR1019940035206

申请日：1994-12-20

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 마봉열 ,  윤태식 ,  김경협 ,  안상호

IPC: B22F9/00

Abstract: 본 발명은 금속 분말야금 원료중 수분사에 의해 제조된 철분의 제조시 적정량의 탄소를 철분에 함유하고 이를 적절히 환원처리 하므로서, 철분의 산화피막 및 그 내부의 내재하고 있는 복합 산화개재물을 효과적으로 제거할 뿐만 아니라 이후의 파쇄공정도 용이하게 행할 수 있는 수분사 철분의 제조방법을 제공하고자 하는데, 그 목적이 있다.
상기 목적을 달성하기 위해 본 발명은 용융철을 수분사 한 후 환원처리하여 철분을 제조하는 방법에 있어서, 상기 용융철내의 탄소 함량을 0.1~0.2중량%로 조절하고, 상기 용융철을 통상의 방법으로 수분사 한 다음, 850~1200℃의 온도에서 불활성 가스분위기하에서 1차 환원처리 후, 계속하여 환원성 가스 분위기하에서 2차 환원처리함을 포함하여 구성되는 수분사 철분의 제조방법에 관한 것을 그 요지로 한다.

公开(公告)号：KR1019960017012A

公开(公告)日：1996-06-17

申请号：KR1019940029115

申请日：1994-11-08

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 김경협 ,  안상호 ,  마봉열

IPC: B22F3/00

Abstract: 본 발명은 물분사법에 의해 제조되는 철분말에 대한 열처리 과정을 제어하므로서 성형성이 우수한 철분말을 제조하는 방법을 제공하고자 하는데, 그 목적이 있다.
본 발명은 통상의 물분사법에 의해 철분말을 제조하는 방법에 있어서, 상기 물분사법으로 얻어진 철분말을 환원 또는 불활성 분위기하에서 900℃ 이상의 온도로 가열하여 유지한 다음 냉각하는 열처리 과정을 2회 이상 실시함을 특징으로 하는 성형성이 우수한 철분말의 제조방법에 관한 것을 그 요지로 한다.

公开(公告)号：KR101794626B1

公开(公告)日：2017-12-01

申请号：KR1020160067256

申请日：2016-05-31

Applicant: 재단법인 포항산업과학연구원

Inventor： 이고기 ,  마봉열

IPC: C01G35/00 ,  B01J19/10 ,  B01J19/00 ,  C22B34/24 ,  C22B1/00 ,  C22B1/02 ,  C22C29/06 ,  C22F1/02 ,  H01L21/02

CPC classification number: C01G35/00 ,  B01J19/00 ,  B01J19/10 ,  B23B2224/20 ,  B23C2224/20 ,  C22B1/005 ,  C22B1/02 ,  C22B34/24 ,  C22C29/06 ,  C22F1/02 ,  H01L21/02266

Abstract: 본발명은탄탈륨을포함하는스크랩을세척하여유분이제거된스크랩을제공하는단계, 상기유분이제거된스크랩을열처리하여금속불순물을기화시키고, 탄탈륨잉곳을제조하는단계, 상기탄탈륨잉곳을수소화및 탈수소화시켜탄탈륨분말을제조하는단계, 및상기탄탈륨분말및 탄소분말을진공또는불활성기체분위기에서자전연소반응시켜탄탈륨카바이드분말을제조하는단계를포함하는탄탈륨카바이드분말제조방법을제공하며, 이에따르면, 스크랩으로부터순도가높은탄탈륨분말을회수하고이를이용하여탄탈륨카바이드분말을제조할수 있으며, 이러한방법으로제조된탄탈륨분말및 탄탈륨카바이드분말을초합금소재, 반도체타겟, 초경공구등 다양한분야에서유용하게사용되는효과가있다.

公开(公告)号：KR101178537B1

公开(公告)日：2012-08-30

申请号：KR1020100137252

申请日：2010-12-28

Applicant: 재단법인 포항산업과학연구원

Inventor： 정재영 ,  마봉열

IPC: A61C8/00 ,  A61L27/06 ,  A61L27/32 ,  A61L27/30

Abstract: 본 발명은 생체친화성 임플란트 및 그 제조방법에 관한 것이다.
본 발명은 ⅰ) 티타늄 또는 티타늄 합금으로 제조된 임플란트형 기지금속; 과 ⅱ) 상기 기지금속의 표면에 대기와 접촉되지 않은 상태에서 입자가 100nm ~ 10㎛ 로 분급된 수산화아파타이트(hydroxyapatite) 복합체 분말을 이용하여 저온고속충격코팅법으로 코팅된 코팅층; 을 포함하는 생체친화성 임플란트를 제공하며, 이 때 수산화아파타이트 복합체 분말은 수산화아파타이트 분말에 은(Ag) 분말이 분산된 것이다.

公开(公告)号：KR1020100076406A

公开(公告)日：2010-07-06

申请号：KR1020080134432

申请日：2008-12-26

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 조성구 ,  안지훈 ,  마봉열 ,  정재영

IPC: A61C8/00 ,  A61C13/00

CPC classification number: A61C8/0013 ,  A61C13/0007 ,  A61C13/02 ,  A61C2008/0046 ,  A61K6/033 ,  A61K6/04 ,  A61L27/06 ,  A61L27/32

Abstract: PURPOSE: An implant having an improved bond strength of coating layer and a manufacturing method thereof are provided to enhance the bond strength of the hydroxyapatite(HA) coating layer even in the low temperature. CONSTITUTION: A manufacturing method of an implant having the improved bond strength of coating layer includes: a process of controlling the average roughness of implant surface in 1.0 - 8.0 micrometer range; a process of making hydroxyapatite into the powder in a constant size; and a process of coating the implant surface less than 30 micrometer through the process that the hydroxyapatite powder is added to more than one gas among nitrogen, argon, helium, hydrogen carrier gas, and then the hydroxyapatite powder is collided on the implant surface at high speed in the vacuum chamber depressurized less than 10^-1torr.

Abstract translation: 目的：提供具有改善的涂层粘合强度的植入物及其制造方法，以提高即使在低温下羟基磷灰石（HA）涂层的粘结强度。 构成：具有改善的涂层粘合强度的植入物的制造方法包括：控制植入物表面的平均粗糙度在1.0-8.0微米范围内的过程; 将羟基磷灰石制成恒定尺寸的粉末的方法; 以及通过将羟基磷灰石粉末添加到氮气，氩气，氦气，氢气载气中的多于一种气体的过程，将植入物表面涂布在小于30微米的方法，然后羟基磷灰石粉末在植入物表面上高度碰撞 真空室内的速度减压不到10 ^ -1torr。

公开(公告)号：KR1020100075246A

公开(公告)日：2010-07-02

申请号：KR1020080133888

申请日：2008-12-24

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 정재영 ,  마봉열 ,  조성구

IPC: B22F3/00 ,  B01J3/00

Abstract: PURPOSE: A reaction container for sponge titanium manufacture is provided to maintain a reaction system below a fixed temperature by effectively cooling reaction heat caused by reaction between TiSl4 and magnesium. CONSTITUTION: A reaction container for sponge titanium manufacture creates sponge titanium through reaction between TiSl4 and magnesium. A coolant path(21) is formed along the inner circumference of the reaction container. A cooling unit is mounted on an upper part of the reaction container including a reaction area and inserted inside the wall of the reaction container.

Abstract translation: 目的：提供用于海绵钛制造的反应容器，通过有效地冷却由TiSl4和镁之间的反应引起的反应热，将反应体系保持在固定温度以下。 构成：用于海绵钛制造的反应容器通过TiS14与镁之间的反应产生海绵钛。 沿着反应容器的内圆周形成冷却剂路径（21）。 冷却单元安装在包括反应区域的反应容器的上部，并插入反应容器的壁内。

公开(公告)号：KR1020080057452A

公开(公告)日：2008-06-25

申请号：KR1020060130747

申请日：2006-12-20

Applicant: 재단법인 포항산업과학연구원

Inventor： 박종일 ,  정재영 ,  마봉열

IPC: C25C3/26

CPC classification number: C25C3/28 ,  C25C7/00

Abstract: A method of manufacturing titanium from calcium titanium oxide in molten salt is provided to increase speed of reduction of Ti oxide, using calcium titanium oxide instead of titanium dioxides. A method of manufacturing titanium from calcium titanium oxide in molten salt comprises the steps of: preparing molten salt of M1X, where M1 is one of Ca, Ba, Li, or Cs, and X is one of F, and C1; and carrying out electrolysis using calcium titanium oxide in the molten salt as a cathode to obtain metallic titanium, where the calcium titanium oxide has 1:0.1-1 of atomic ratio of calcium to titanium dioxides.

Abstract translation: 提供了一种从熔融盐中的钙二氧化钛制备钛的方法，以提高Ti氧化物的还原速度，使用二氧化钛代替二氧化钛。 由熔融盐中的钙钛氧化物制造钛的方法包括以下步骤：制备M1的熔融盐，其中M1是Ca，Ba，Li或Cs之一，X是F和C1之一; 并且在熔融盐中进行使用二氧化钛的电解作为阴极，得到金属钛，其中，所述钙钛氧化物具有钙与二氧化钛的原子比为1:0.1-1。

公开(公告)号：KR100444248B1

公开(公告)日：2004-08-16

申请号：KR1020020023045

申请日：2002-04-26

Applicant: 재단법인 포항산업과학연구원 ,  한국산업기술평가원

Inventor： 정재영 ,  마봉열

IPC: C22C38/44

CPC classification number: C21D6/004 ,  C21D7/13 ,  C21D8/0205 ,  C22C38/001 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

Abstract: A high manganese duplex stainless steel with excellent hot workability, comprising (in weight %): less than 0.1% of C; 0.05-2.2% of Si; 2.1-7.8% of Mn; 20-29% of Cr; 3.0-9.5% of Ni; 0.08-0.5% of N; less than 5.0% of Mo and 1.2-8% of W, alone or composite; the balance Fe and inevitable impurities; and a method for manufacturing the duplex stainless steel, comprising the steps of: solution heating the duplex stainless steel composition at a temperature of 1,050 to 1,250° C., hot working at a starting temperature of 1,130 to 1,280° C. and then ending at a temperature greater than 1,000° C., and then cooling within the temperature range from 1,000 to 700° C. at a cooling rate of more than 3° C./min. The duplex stainless steel exhibits a reduction in area of more than 50% at 1,050° C., and possesses a yield strength of more than 400 MPa, and a corrosion rate of less than 0.36 mm/year, after solution heating.

Abstract translation: 一种具有优良热加工性的高锰双相不锈钢，包含（以重量％计）：小于0.1％的C; 0.05-2.2％的Si; 2.1-7.8％的Mn; 20-29％的Cr; Ni：3.0-9.5％; 0.08-0.5％的N; 少于5.0％的Mo和1.2-8％的W，单独或复合; 余量Fe和不可避免的杂质; 以及一种制造该双相不锈钢的方法，该方法包括以下步骤：将该双相不锈钢组合物在1050至1250℃的温度下进行溶液加热; C.，在1,130至1,280℃的起始温度下热加工; 然后在大于1000℃的温度下结束。 然后在1000-700℃的温度范围内冷却， C.在大于3℃的冷却速率下， C./min。 双相不锈钢在1050℃时的面积减少超过50％; C，并且在溶液加热后具有超过400MPa的屈服强度和小于0.36mm /年的腐蚀速率。

公开(公告)号：KR1020020083493A

公开(公告)日：2002-11-02

申请号：KR1020020023045

申请日：2002-04-26

Applicant: 재단법인 포항산업과학연구원 ,  한국산업기술평가원

Inventor： 정재영 ,  마봉열

IPC: C22C38/44

CPC classification number: C21D6/004 ,  C21D7/13 ,  C21D8/0205 ,  C22C38/001 ,  C22C38/42 ,  C22C38/44 ,  C22C38/58

Abstract: PURPOSE: A duplex stainless steel which is capable of improving castability as improving strength and corrosion resistance at the same time, and particularly improves hot workabilities is provided, and a method for manufacturing the duplex stainless steel is provided. CONSTITUTION: The high manganese duplex stainless steel having superior hot workabilities comprises 0.1 wt.% or less of C, 0.05 to 2.2 wt.% of Si, 2.1 to 7.8 wt.% of Mn, 20 to 29 wt.% of Cr, 3.0 to 9.5 wt.% of Ni, 0.08 to 0.5 wt.% of N, and 5.0 wt.% or less of Mo, 1.2 to 8 wt.% of W, or a mixture thereof, and a balance of Fe and inevitable impurities, wherein the high manganese duplex stainless steel having superior hot workabilities comprises 0.1 wt.% or less of C, 0.05 to 2.2 wt.% of Si, 2.1 to 7.8 wt.% of Mn, less than 20 to 26 wt.% of Cr, 4.1 to 8.8 wt.% of Ni, 0.08 to 0.345 wt.% of N, 5.0 wt.% or less of Mo, and a balance of Fe and inevitable impurities in case that Mo is added alone when Cr content is less than 20 to 26 wt.%, the high manganese duplex stainless steel having superior hot workabilities comprises 0.1 wt.% or less of C, 0.05 to 2.2 wt.% of Si, 3.1 to 7.8 wt.% of Mn, 26 to 29 wt.% of Cr, 4.1 to 9.5 wt.% of Ni, 0.08 to 0.345 wt.% of N, 5.0 wt.% or less of Mo, and a balance of Fe and inevitable impurities in case that Mo is added alone when Cr content is 26 to 29 wt.%, the high manganese duplex stainless steel having superior hot workabilities comprises 0.1 wt.% or less of C, 0.05 to 2.2 wt.% of Si, 2.1 to 7.8 wt.% of Mn, 20 to 29 wt.% of Cr, 3.0 to 9.5 wt.% of Ni, 0.08 to 0.5 wt.% of N, 1.2 to 8 wt.% of W, and a balance of Fe and inevitable impurities in case that W is added alone, and the high manganese duplex stainless steel having superior hot workabilities comprises 0.1 wt.% or less of C, 0.05 to 2.2 wt.% of Si, 2.1 to 7.8 wt.% of Mn, 20 to 27.8 wt.% of Cr, 3.0 to 9.5 wt.% of Ni, 0.08 to 0.5 wt.% of N, 0.5 wt.% or less of Mo, 1.2 to 8 wt.% of W, and a balance of Fe and inevitable impurities in case that both Mo and W are added, wherein Mo and W satisfy Mo+0.5W=0.8 to 4.4 wt.%.

Abstract translation: 目的：提供能够同时提高强度和耐腐蚀性而改善浇铸性的双相不锈钢，并且特别提高热加工性，并且提供了制造双相不锈钢的方法。 构成：具有优异的热加工性的高锰双相不锈钢包括C：0.1重量％以下，Si：0.05〜2.2重量％，Mn：2.1〜7.8重量％，Cr：20〜29重量％ 至9.5重量％的Ni，0.08至0.5重量％的N和5.0重量％或更少的Mo，1.2至8重量％的W或其混合物，余量为Fe和不可避免的杂质， 其中具有优异的热加工性的高锰双相不锈钢包括C：0.1重量％以下，C：0.05〜2.2重量％，Mn：2.1〜7.8重量％，Cr：20〜26重量％ 4.1〜8.8重量％的Ni，0.08〜0.345重量％的N，5.0重量％以下的Mo，余量为Fe和不可避免的杂质，当Cr含量小于20〜 26重量％，具有优异的热加工性的高锰双相不锈钢包括C：0.1重量％以下，C：0.05〜2.2重量％，Mn：3.1〜7.8重量％，26：29重量％ Cr，4.1〜9.5重量％的Ni，0.08〜0.345重量％的N，5.0重量％以下的Mo，和bal 在Cr含量为26〜29重量％的情况下单独添加Mo的情况下的Fe和不可避免的杂质，具有优异的热加工性的高锰双相不锈钢包含0.1重量％以下的C，0.05〜2.2重量％ 的Si，2.1〜7.8重量％的Mn，20〜29重量％的Cr，3.0〜9.5重量％的Ni，0.08〜0.5重量％的N，1.2〜8重量％的W，以及 在单独加入W的情况下，Fe和不可避免的杂质的平衡，具有优异的热加工性的高锰双相不锈钢包含0.1重量％以下的C，0.05〜2.2重量％的Si，2.1〜7.8重量％ 的Mn，20〜27.8重量％的Cr，3.0〜9.5重量％的Ni，0.08〜0.5重量％的N，0.5重量％以下的Mo，1.2〜8重量％的W，以及 在添加Mo和W的情况下，Fe和不可避免的杂质的平衡，其中Mo和W满足Mo + 0.5W = 0.8〜4.4wt％。

公开(公告)号：KR100340641B1

公开(公告)日：2002-07-18

申请号：KR1019970069250

申请日：1997-12-16

Applicant: 주식회사 포스코 ,  재단법인 포항산업과학연구원

Inventor： 정재영 ,  백응률 ,  마봉열

IPC: B23K35/362

Abstract: PURPOSE: A titanium dioxide containing flux for submerged arc welding of heat-resistant stainless steel with high strength is provided, which has no disadvantage that oxidation occurs on welding bead, has excellent surface roughness and slag delamination. CONSTITUTION: The titanium dioxide containing flux for submerged arc welding comprises SiO2 16 to 22 wt.%, CaF2 20.5 to 25 wt.%, MgO 37 to 44 wt.%, Al2O3 6 to 12 wt.% TiO2 6 to 12 wt.% and (Na2O+K2O+MnO+FeO) 0.5 to 5.0 wt.%, wherein not less than 90 % of flux particle in the total flux particle is in the range of 0.3 to 1.0 mm.