-
公开(公告)号：KR100784914B1
公开(公告)日：2007-12-11
申请号：KR1020060039293
申请日：2006-05-01
Applicant: 학교법인연세대학교
IPC: C22C9/00
Abstract: 본 발명은 비정질 형성능이 우수한 구리계 합금에 비정질 형성시 구성 원소의 고유특성과 열역학적 고찰을 통하여 커다란 혼합열 차이를 가지는 원소를 첨가함에 의해 응고시 이상분리 비정질화가 가능하여 다단계 변형이 가능한 이상분리 비정질 합금에 관한 것이다.
본 발명은 Cu
100-ab (A)
a (B)
b 로 표현되며, A는 Zr, Hf 및 Ti 중 적어도 1종이고, B는 Be, Ag, Y 및 Gd 중 적어도 1종이고, a, b는 원자량 % 로 10≤a≤60, 10≤b≤60, a+b≤70 범위를 갖는다.
본 발명 합금의 경우 이상 분리된 비정질에서 각각 주 원소의 고유한 결정화 온도차에 의해 분리되어 주어지는 결정화 거동으로 인해 각각의 비정질에 해당하는 과냉각 액체 영역에서 다단계 변형이 가능하다.
Cu계, 비정질 합금, 양의 혼합열, 이상분리, 다단계 변형, 불혼화 영역-
公开(公告)号：KR1020070109300A
公开(公告)日：2007-11-15
申请号：KR1020060042086
申请日：2006-05-10
Applicant: 학교법인연세대학교
CPC classification number: C22C45/10 , B82Y40/00 , C22C2200/02
Abstract: A Zr/Ti-based two phase metallic glass having wide applications is provided, wherein the two phase metallic glass can easily manufacture an amorphous matrix nano-composite by optionally nano-crystallizing a composition separated into two phases through optional controlling of heat treatment or cooling rate since the two phase metallic glass has a phase separating structure with a very fine connecting structure of a nano-size. A Zr/Ti-based two phase metallic glass having excellent glass forming ability is characterized in that the metallic glass is represented by the formula (ZT)100-a-b(A)a(B)b, wherein ZT is at least one of Zr and Ti, (A) is at least one of Gd, Ge and Nd, (B) is at least two of Be, Al, Fe, Co, Ni, Cu, Ag and Nb, and a and b have an atomic percent(at.%) range of 5
Abstract translation: 提供了具有广泛应用的Zr / Ti基两相金属玻璃，其中两相金属玻璃可以容易地制造无定形基质纳米复合材料，任选地通过任选的热处理或冷却控制来分离成两相的组合物纳米结晶 因为两相金属玻璃具有具有非常精细的纳米尺寸连接结构的相分离结构。 具有优异的玻璃形成能力的Zr / Ti基双相金属玻璃的特征在于金属玻璃由式（ZT）100-ab（A）a（B）b表示，其中ZT为Zr Ti，（A）为Gd，Ge，Nd中的至少一种，（B）为Be，Al，Fe，Co，Ni，Cu，Ag，Nb中的至少2种，a和b为原子百分比 at。％）范围5 <= a <= 60和20 <= b <= 80。 金属玻璃含有一部分被Hf取代的Zr。 A为Gd，B为Al和Co。A为Gd，Bi和Ni。 A是Gd，B是Al，Cu和Ni。 A为Ce，B为Al，Ni，Cu，Nb。 A为Ce，B为Al，Cu和Fe。 A为Ce，B为Al，Cu和Fe。 A是Nd，B是Al，Cu和Ni。
-
公开(公告)号：KR1020070106887A
公开(公告)日：2007-11-06
申请号：KR1020060039293
申请日：2006-05-01
Applicant: 학교법인연세대학교
IPC: C22C9/00
CPC classification number: C22C45/001 , B82Y40/00 , C22C30/02 , C22C30/04
Abstract: A Cu-based two phase separation metallic glass alloy with multi-step deformation property is provided to facilitate manufacturing of a metallic glass alloy, in which a two-phase amorphous alloy having superior glass forming ability exists through phase separation, by using an in-situ method through thermodynamic approach. A Cu-based two phase separation metallic glass alloy with multi-step deformation property is expressed by Cu100-a-b(A)a(B)b. The A comprises at least one selected from the group consisting of Zr, Hf and Ti and the B comprises at least one selected from the group consisting of Be, Ag, Y and Gd. The "a" and "b" denote atomic weight % (5
Abstract translation: 提供了具有多步变形特性的Cu基二相分离金属玻璃合金，以便于制造金相玻璃合金，其中通过相分离存在具有优良玻璃形成能力的两相非晶态合金， 通过热力学方法进行原位法。 Cu100-a-b（A）a（B）b表示具有多步变形特性的Cu基两相分离金属玻璃合金。 A包含选自Zr，Hf和Ti中的至少一种，B包含选自Be，Ag，Y和Gd中的至少一种。 “a”和“b”表示原子量％（5≤a≤60，5≤b≤60，（a + b）≤70）。 金属玻璃还包含选自Al，Ni，Si和Sn中的20原子％以下的至少一种。
-
公开(公告)号：KR100763496B1
公开(公告)日：2007-10-04
申请号：KR1020060039614
申请日：2006-05-02
Applicant: 학교법인연세대학교
IPC: C22C27/02
Abstract: A two-phase separating amorphous alloy with multistage deformation properties is provided to manufacture a composition through nano crystallization easily, and to enable multistage molding in a supercooling liquid area by adding elements having large mixed heat difference to the Nd-based bulk amorphous alloy composition. A two-phase separating amorphous alloy with multistage deformation properties is displayed with a common formula Nd100-a-b(TM)a(D)b. The TM is a one kind of composition selected from A-B, A-C, and B-C. The A group contains Y, Ti, Zr, La, Pr, Gd, and Hf. The B group contains Fe, and Mn. The C group contains Co, Ni, Cu, and Ag. The content of each element group consisting of each composition is more than 5 atomic weight%, and the element selected from each element group is at least one kind. The D is at least one kind of Al, B, Si, and P. The a and b has a range of 20
Abstract translation: 提供了具有多级变形特性的两相分离非晶合金，以容易地通过纳米结晶制造组合物，并且通过向Nd基块状非晶态合金组合物添加具有大的混合热差的元素，能够在过冷液体区域中进行多段成型。 具有多级变形特性的两相分离非晶合金以公式Nd100-a-b（a）（D）b显示。 TM是选自A-B，A-C和B-C的一种组合物。 A组包含Y，Ti，Zr，La，Pr，Gd和Hf。 B组含有Fe和Mn。 C组包含Co，Ni，Cu和Ag。 由每种组合物组成的每个元素组的含量大于5原子％，并且从每个元素组中选择的元素为至少一种。 D是Al，B，Si和P中的至少一种.a和b具有20 <= a <= 80的范围，以及作为原子量％的5 <= b <= 30。 非晶合金是Nd-Zr-Co-Al，Nd-Ti-Co-Al，Nd-Ti-Fe-Al，Nd-Fe-Co-Al，Nd-Fe-Ni-Al，Nd-Fe- Cu-Al和Nd-Fe-Ag-Al基材料。
-
-
Patent Agency Ranking
公开(公告)号：KR100631465B1
公开(公告)日：2006-10-04
申请号：KR1020040076028
申请日：2004-09-22
Applicant: 학교법인연세대학교
IPC: C22C45/00
Abstract: 본 발명은 비정질 형성에 관한 열역학적 관점과 동역학적 관점에서 제시된 인자들을 결합함으로써 쉽게 벌크 비정질 형성 영역의 예측 및 평가가 용이하게 이루어질 수 있는 새로운 비정질 형성능 평가인자를 이용한 다성분계 합금 조성에서 벌크 비정질 형성 조성 및 범위의 예측 및 평가방법에 관한 것이다.
본 발명은 비정질 형성에 관한 열역학적 관점에서 제시되어진 제1온도구간과 동역학적 관점에서 제시되어진 제2온도구간을 결합하는 단계와, 상기 결합된 제1 및 제2 온도구간에 대하여 각 시스템 구성원소들의 용융점과 양을 고려하여 계산된 T
m
mix 로 표준화(normalizing)하여 비정질 형성능 평가인자(ε) 값을 구하는 단계와, 상기 비정질 형성능 평가인자(ε) 값을 이용하여 벌크 비정질 형성 최대 두께(t
max )를 구하는 단계로 구성되는 것을 특징으로 한다.
벌크 비정질 형성 예측, 평가인자, 열역학적 관점, 동역학적 관점-
-
-
公开(公告)号：KR1020050032715A
公开(公告)日：2005-04-08
申请号：KR1020030068648
申请日：2003-10-02
Applicant: 학교법인연세대학교
IPC: C22C23/04
Abstract: Provided are a magnesium alloy having excellent thermal stability and hot formability by expanding a process temperature range of quasicrystalline phase and increasing sites of dynamic recrystallization of grains, a magnesium alloy which displays excellent superplasticity, and in which voids are not formed well by refining magnesium matrix structure, and a method for manufacturing the magnesium alloy. A quasicrystalline phase reinforced Mg-based alloy is characterized in that two phase regions of quasicrystalline phase and solid solution metal exist in the alloy, the alloy having hot workability manufactured by casting method comprises Mg as a principal component, 1.2 to 8.0 at.% of Zn, 0.2 to 1.5 at.% of Y and 0.1 to 3.0 at.% of Zr, and the alloy is formed at a temperature corresponding to 1/3 or more of melting point to obtain an elongation of 150% or more. A method for manufacturing a quasicrystalline phase reinforced Mg-based alloy comprises: a step of obtaining an ingot of quasicrystalline phase reinforced Mg-based alloy by casting method, wherein two phase regions of quasicrystalline phase and solid solution metal exist in the alloy, the alloy having hot workability comprises Mg as a principal component, 1.2 to 8.0 at.% of Zn, 0.2 to 1.5 at.% of Y and 0.1 to 3.0 at.% of Zr; and a step of obtaining a workpiece in which strength and elongation of the alloy are increased by refining pro-eutectic alpha magnesium grains through hot extrusion and/or hot rolling of the ingot.
Abstract translation: 本发明提供一种镁合金，通过扩大准晶相的工艺温度范围和增加晶粒的动态再结晶的位置，显示优异的超塑性的镁合金，并且通过精炼镁基体不能很好地形成空隙，从而具有优异的热稳定性和热成形性 结构，以及镁合金的制造方法。 准晶相增强镁基合金的特征在于，在合金中存在准晶相和固溶金属的两相区域，通过铸造方法制造的具有热加工性的合金包括Mg作为主要成分，1.2〜8.0原子％ Zn，0.2〜1.5原子％的Y和0.1〜3.0原子％的Zr，并且在相当于熔点的1/3以上的温度下形成合金，得到150％以上的伸长率。 一种制备准晶相增强镁基合金的方法包括：通过流延法获得准晶相增强Mg基合金锭，其中在合金中存在准晶相和固溶金属的两相区，合金 具有热加工性，包括Mg作为主要成分，1.2至8.0原子％的Zn，0.2至1.5原子％的Y和0.1至3.0原子％的Zr; 以及通过使锭的热挤压和/或热轧精炼先共晶α镁颗粒，获得其中强度和伸长率增加的工件的步骤。
-
公开(公告)号：KR1020030052000A
公开(公告)日：2003-06-26
申请号：KR1020010081726
申请日：2001-12-20
Applicant: 학교법인연세대학교
IPC: C23C4/04
CPC classification number: C23C4/04
Abstract: PURPOSE: A composite coating layer containing a certain volume fraction of aluminum based quasicrystalline phase in a metal, intermetallic compound, ceramic, cermet or plastic matrix to improve friction and wear characteristics of machine, and a manufacturing method of the composite coating layer is provided. CONSTITUTION: The composite coating layer is characterized in that it contains aluminum based quasicrystalline phase in a metal, intermetallic compound, ceramic, cermet or polymer matrix. The manufacturing method of the composite coating layer containing quasicrystalline phase by powder spray method comprises the steps of preparing a mixed powder by mixing an aluminum based quasicrystalline powder whose volume fraction is in the range of 0% =50%, 8
Abstract translation: 目的：提供在金属，金属间化合物，陶瓷，金属陶瓷或塑料基质中含有一定体积分数的铝基准晶相以提高机器的摩擦和磨损特性的复合涂层以及复合涂层的制造方法。 构成：复合涂层的特征在于其在金属，金属间化合物，陶瓷，金属陶瓷或聚合物基质中含有铝基准晶相。 通过粉末喷涂法制备含有准晶相的复合涂层的制造方法包括以下步骤：通过将体积分数在0％<体积分数<100％范围内的铝基准晶体粉末与任何一种粉末 选自金属，金属间化合物，陶瓷，金属陶瓷和聚合物粉末; 以及通过选自等离子喷涂法和HVOF（高速氧燃料）热喷涂法中的任何一种方法，使用混合粉末形成涂层，其中铝基准晶体由AlaMbNcXdIe组成，其中a + b + c + d + e = 100，表示原子重量比，a> = 50％，8 <= b <= 25,5 <= c <= 20,0 <= d <= 15,0 <= e <= 2，M为 选自Cu和Co的元素，N是选自Fe，Mn，Ni，Ru，Os，Mo，V，Mg和Zn的元素，X是选自Cr，Si，Be，B，Y和贵金属的元素 元素，而在制造过程中，I是含有氧或氮的杂质。
-
-
-
-
-
-
-
-
-
Search Results
51
records
(took 0.033 seconds)
