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公开(公告)号：KR1020020008312A
公开(公告)日：2002-01-30
申请号：KR1020000041970
申请日：2000-07-21
IPC: B22F3/00
Abstract: PURPOSE: A process for producing porous aluminum using pressure-assisted current sintering is provided to effectively control pore size/volume and its microstructure, thereby obtaining porous aluminum having superior filtering and sound absorption effects when it is used as a filter and a sound absorbing material. CONSTITUTION: The process includes: (i) laying up a raw material of aluminum powder, aluminum short staple, or a mixture thereof; (ii) forming the raw material by applying a pressure of 2 to 100 kg/cm¬2 to the laid up raw material; and (iii) directly bonding aluminum powder or short staple by directly supplying power to aluminum green compact using the pressed and power supplied sintering with a voltage of 0.2 to 10 V/cm¬3 and a current of 20 to 500 A/cm¬3 after forming, thereby partially smelting alumina present on the surface of aluminum.
Abstract translation: 目的：提供使用压力辅助电流烧结制造多孔铝的方法，以有效地控制孔径/体积及其微结构，从而获得当用作过滤器和吸声材料时具有优异的过滤效果和吸音效果的多孔铝 。 规定：该方法包括：（i）生产铝粉，铝短纤维或其混合物的原料; （ii）通过对所铺设的原料施加2至100kg / cm 2的压力来形成原料; 和（iii）通过使用0.2至10V / cm -3的电压和20至500A / cm 3的电流的压制和供电烧结直接将铝粉末直接供电给铝粉末，直接接合铝粉末或短纤维 成型后，部分地熔融存在于铝表面的氧化铝。
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Patent Agency Ranking
公开(公告)号：KR1020030090885A
公开(公告)日：2003-12-01
申请号：KR1020020028489
申请日：2002-05-22
Applicant: 한국과학기술연구원 , 한화나노텍 주식회사
IPC: C22C1/04
Abstract: PURPOSE: A method for fabricating porous aluminum sound-absorbing material is provided to improve noise reduction characteristics and reduce production cost by reducing quantity of aluminum per unit volume required in sintered porous aluminum sheet, and a porous aluminum sound-absorbing material fabricated by the method is provided. CONSTITUTION: The method comprises the steps of mixing pure aluminum powder as a base material with aluminum alloy powder as a binder, stacking the mixed powder as evenly dispersing the mixed powder into a mold on which at least one or more projecting parts are formed, and sintering the mixed powder under vacuum condition, inert gas atmosphere or hydrogen gas atmosphere in the state that a load is applied to the mixed powder in the mold so that an indentation part having the same shape as the projecting parts is formed on at least one side surface of sintered green compact, wherein the aluminum alloy is one or more alloys selected from Al-Zn, Al-Si, Al-Cu, Al-Ni and Al-Mg, wherein content of a metal bonded to aluminum in the aluminum alloy is in the range of 10 to 40 wt.%, wherein the aluminum powder and aluminum alloy powder are formed in a spherical shape, needle shape or filament, wherein cross sectional shape of the projecting parts is circle, polygon or a mixture thereof, wherein the load applied to the mixed powder is in the range of 20 to 80 g/cm¬2, and wherein the sintering is performed in the sintering temperature range of 550 to 660 deg.C for the sintering time range of 10 min to 2 hrs.
Abstract translation: 目的：提供一种制造多孔铝吸音材料的方法，以通过减少烧结多孔铝板所需的每单位体积的铝量和通过该方法制造的多孔铝吸音材料来改善降噪特性并降低生产成本 被提供。 方法：该方法包括以纯铝粉为基料，以铝合金粉末为粘合剂，将混合粉末均匀分散在形成有至少一个以上突出部分的模具中， 在真空条件下，在惰性气体气氛或氢气气氛中烧结混合粉末，在负载施加到模具中的混合粉末的状态下，使得在至少一个侧面上形成具有与突出部分相同形状的压痕部分 其中所述铝合金是选自Al-Zn，Al-Si，Al-Cu，Al-Ni和Al-Mg中的一种或多种合金，其中在铝合金中与铝结合的金属的含量为 在10〜40重量％的范围内，其中铝粉末和铝合金粉末形成为球形，针状或长丝，其中突出部分的横截面形状为圆形，多边形或其混合物，其中 施加到混合粉末的负载在20至80g / cm 2的范围内，并且其烧结在550至660℃的烧结温度范围内进行，烧结时间范围为10分钟至2小时 。
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公开(公告)号：KR100472922B1
公开(公告)日：2005-03-08
申请号：KR1020020028489
申请日：2002-05-22
Applicant: 한국과학기술연구원 , 한화나노텍 주식회사
IPC: C22C1/04
Abstract: 본 발명은 기지재로서 순수한 알루미늄과 결합제로서 Al-Zn, Al-Si, Al-Cu, Al-Ni, Al-Mg 중에서 선택되는 어느 하나 이상인 알루미늄합금을 포함하여 구성되거나 또는 알루미늄합금만으로 구성된 소결체로서, 상기 소결체의 적어도 한쪽 표면에 하나 이상의 만입부가 형성되어 있는 다공성 알루미늄 흡음재를 제공한다. 또한, 본 발명은 기지재로서 순수한 알루미늄 분말과 결합제로서 알루미늄합금 분말을 혼합하고, 혼합된 분말을 적어도 하나 이상의 돌출부가 형성되어 있는 주형 내에 고르게 분산시키면서 적층하고, 하중을 가한 상태에서 진공상태, 불활성 분위기 또는 수소 분위기 하에서 소결하는 단계를 포함하여 구성되며, 소결된 성형체의 적어도 한쪽 표면에는 상기 돌출부와 동일한 형태의 만입부가 형성되어 있는 것을 특징으로 하는 다공성 알루미늄 흡음재의 제조방법을 제공한다.
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公开(公告)号：KR100454715B1
公开(公告)日：2004-11-05
申请号：KR1020020013914
申请日：2002-03-14
Applicant: 한국과학기술연구원
IPC: C23C14/06
CPC classification number: C23C8/02 , C23C10/02 , C23C12/00 , Y10T428/31678
Abstract: 본 발명은 몰리브덴, 몰리브덴 합금, 몰리브덴이 피복된 니오비움 또는 몰리브덴이 피복된 니오비움 합금의 모재 표면상의 MoSi
2 -Si
3 N
4 복합피복층 및 그 제조방법에 관한 것으로써, 상기 모재 표면상의 MoSi
2 -Si
3 N
4 복합피복층은 (1) 상기 모재 표면에 질소를 기상증착하여 Mo
2 N 확산층을 형성하고, Mo
2 N 확산층의 표면에 실리콘을 기상증착하여 MoSi
2 -Si
3 N
4 복합피복층을 형성하거나, (2) 상기 모재 표면에 화학증착법에 의하여 실리콘을 기상증착하여 MoSi
2 확산층을 형성하고, MoSi
2 확산층을 고순도 수소 또는 아르곤 분위기하에 열처리하여 Mo
5 Si
3 확산층으로 상변태시키고, Mo
5 Si
3 확산층의 표면에 화학증착법에 의하여 질소를 기상증착하여 Mo
2 N-Si
3 N
4 복합확산층을 형성하고, Mo
2 N-Si
3 N
4 복합확산층의 표면에 실리콘을 기상증착하여 MoSi
2 -Si
3 N
4 복합피복층을 형성함으로써 제조될 수 있다.
상기 방법으로 제조된 MoSi
2 -Si
3 N
4 복합피복층은 등축정의 MoSi
2 결정입계에 Si
3 N
4 입자들이 분포된 조직을 특징으로 하여 (1) 모재의 반복내산화성의 향상, (2) 저온내산화성의 향상, (3) 피복층의 기계적성질의 개선, 즉 열응력에 의한 미세크랙의 전파억제을 기할 수 있다.Abstract translation: 涂覆在钼，钼合金，钼涂覆的铌或钼涂覆的铌合金的基础材料的表面上的硅化钼 - 氮化硅复合涂层具有这样的结构，即氮化硅颗粒沿着硅化钼的晶界分布 等轴晶粒。 还包括用于制造硅化钼（MoSi 2） - 氮化硅（Si 3 N 4）复合涂层的方法的独立权利要求，其包括通过在基材表面上气相沉积氮气以形成Mo 2 N扩散层，并且形成MoSi 2 -Si3N4复合涂层，通过在Mo2N扩散层的表面上气相沉积硅。
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公开(公告)号：KR1020030074918A
公开(公告)日：2003-09-22
申请号：KR1020020013914
申请日：2002-03-14
Applicant: 한국과학기술연구원
IPC: C23C14/06
CPC classification number: C23C8/02 , C23C10/02 , C23C12/00 , Y10T428/31678
Abstract: PURPOSE: A MoSi2-Si3N4 composite coating layer capable of improving repeated oxidation resistance and low temperature oxidation resistance of matrix and improving mechanical properties of the coating layer at high temperature and a manufacturing method of the MoSi2-Si3N4 composite coating layer are provided. CONSTITUTION: The MoSi2-Si3N4 composite coating layer is characterized in that it is coated on the surface of a matrix formed of molybdenum, molybdenum alloy, molybdenum coated niobium or molybdenum coated niobium alloy, and it has a structure in which Si3N4 grains are distributed on equiaxed MoSiO2 grain boundaries. The manufacturing method of MoSi2-Si3N4 composite coating layer coated on the surface of a matrix of molybdenum, molybdenum alloy, molybdenum coated niobium or molybdenum coated niobium alloy comprises the steps of forming Mo2N diffusion layer by vapor depositing nitrogen on the surface of the matrix; and forming a MoSi2-Si3N4 composite coating layer by vapor depositing silicon on the surface of the Mo2N diffusion layer, wherein the nitrogen vapor deposition in the step of forming Mo2N diffusion layer on the surface of the matrix is a chemical vapor deposition using nitrogen (N2) or ammonia (NH3), wherein the silicon vapor deposition in the step of forming a MoSi2-Si3N4 composite coating layer on the surface of the Mo2N diffusion layer is a chemical vapor deposition using SiCl4, SiH2Cl2, SiH3Cl or SiH4, and wherein the silicon vapor deposition in the step of forming a MoSi2-Si3N4 composite coating layer on the surface of the Mo2N diffusion layer is a pack siliconizing method using pack siliconizing powder having a composition comprising 1 to 70 wt.% of Si, 1 to 10 wt.% of NaF and 20 to 98 wt.% of Al2O3.
Abstract translation: 目的：提供能够提高基体的重复抗氧化性和低温抗氧化性，提高涂层在高温下的机械性能的MoSi2-Si3N4复合涂层以及MoSi2-Si3N4复合涂层的制造方法。 构成：MoSi2-Si3N4复合涂层的特征在于其涂覆在由钼，钼合金，涂有钼的铌或钼涂覆的铌合金形成的基体的表面上，并且其具有其中分布有Si 3 N 4晶粒的结构 等轴MoSiO2晶界。 涂覆在钼，钼合金，镀钼铌或钼涂层铌合金基体表面上的MoSi2-Si3N4复合涂层的制造方法包括通过在基体表面上气相沉积氮气形成Mo2N扩散层的步骤; 并通过在Mo2N扩散层的表面上气相沉积硅形成MoSi2-Si3N4复合涂层，其中在基体表面形成Mo2N扩散层的步骤中的氮气汽相沉积是使用氮气（N 2 ）或氨（NH 3），其中在Mo2N扩散层的表面上形成MoSi 2 -Si 3 N 4复合涂层的步骤中的硅气相沉积是使用SiCl 4，SiH 2 Cl 2，SiH 3 Cl或SiH 4的化学气相沉积，其中硅 在Mo2N扩散层的表面上形成MoSi2-Si3N4复合涂层的步骤中的气相沉积是使用包含1-70重量％的Si，1-10重量％的组合物的组合硅化粉末的包装硅化法， 的NaF和20至98重量％的Al 2 O 3。
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公开(公告)号：KR100373741B1
公开(公告)日：2003-02-26
申请号：KR1020000041970
申请日：2000-07-21
IPC: B22F3/00
Abstract: PURPOSE: A process for producing porous aluminum using pressure-assisted current sintering is provided to effectively control pore size/volume and its microstructure, thereby obtaining porous aluminum having superior filtering and sound absorption effects when it is used as a filter and a sound absorbing material. CONSTITUTION: The process includes: (i) laying up a raw material of aluminum powder, aluminum short staple, or a mixture thereof; (ii) forming the raw material by applying a pressure of 2 to 100 kg/cm¬2 to the laid up raw material; and (iii) directly bonding aluminum powder or short staple by directly supplying power to aluminum green compact using the pressed and power supplied sintering with a voltage of 0.2 to 10 V/cm¬3 and a current of 20 to 500 A/cm¬3 after forming, thereby partially smelting alumina present on the surface of aluminum.
Abstract translation: 目的：提供一种利用压力辅助电流烧结制造多孔铝的方法，以有效地控制孔径/体积及其微观结构，由此获得当用作过滤器和吸音材料时具有优异的过滤和吸音效果的多孔铝 。 组成：该工艺包括：（1）铺设铝粉，铝短纤维或其混合物的原材料; （ii）通过对所铺设的原材料施加2至100kg / cm 2的压力来形成原材料; （iii）通过以0.2至10V / cm 3的电压和20至500A / cm 3的电压进行压制和供电烧结，通过直接向铝压坯供电来直接结合铝粉或短纤维 在成形之后，由此部分熔炼存在于铝表面上的氧化铝。
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