Abstract:
PURPOSE: Provided a paste-phase composition for filling into a joining region of aluminum panels in automobiles, which shows excellent adhesion performance to an aluminum panels. CONSTITUTION: The paste-phase composition comprises 7-15 wt% of an acryl-denatured epoxy, 3-15 wt% of a dimer-denatured epoxy-based resin, 5-20 wt% of a bisphenol-A type epoxy-based resin, 1-3 wt% of a hygroscopic agent, 3-15 wt% of a curing agent and curable accelerator, 15-40 wt% of a filling agent and 3-9 wt% of conductive carbon black, wherein the composition further additionally comprises 5-25 wt% of a nitrile rubber-denatured epoxy-based resin and 10-30 wt% of carboxy terminated butadiene acrylonitrile copolymer(CTBN)-denatured epoxy resin and has a viscosity of 400,000-800,000 cps/20 deg.C.
Abstract:
Ti소스, Mo소스, Ag소스및 질소, 아르곤분위기가스를이용하여플라즈마코팅하는 TiAgMoN 코팅층형성방법으로서, 코팅챔버를진공처리하는진공단계; 챔버내에아르곤가스를투입하고 Ti소스에전원을인가하여모재의표면에 Ti를충돌시켜클리닝하면서모재의표면에 Ti 버퍼층을형성하는 Ti 버퍼링단계; 챔버내에질소가스를투입하고 Ti소스에전원을인가하여 Ti 버퍼층의표면에 TiN 버퍼층을형성하는 TiN 버퍼링단계; 및챔버내에아르곤가스와질소가스를투입하고 Ti소스, Mo소스및 Ag소스에각각전원을인가하여 TiN 버퍼층의표면에 TiAgMoN 코팅층을형성하되, 코팅층에서 Ag의비율이 20~25 at%가되도록 Ag소스의파워를제어하고, Mo의비율이 10~13 at%가되도록 Mo소스의파워를제어하는코팅단계;를포함하고, 상기 Ti 버퍼링단계는, 모재와 TiN 버퍼층사이의격자상수차이를감소시켜계면간접합강도를향상시키도록 Ti 버퍼층을형성시키고, 상기 TiN 버퍼링단계는, Ti 버퍼층과 TiAgMoN 코팅층사이의격자상수차이를감소시켜계면간접합강도를향상시키도록 TiN 버퍼층을형성하는것을특징으로하는 TiAgMoN 코팅층형성방법이소개된다.
Abstract:
Introduced in the present invention are a TiAgN coating layer, a TiAgN coating method, and a TiAgN coating apparatus. The TiAgN coating layer is coated by a plasma coating method using nitrogen gas, a Ti source, and an Ag source, and contents of Ag increase when approaching the surface of the TiAgN coating layer. The TiAgN coating layer comprises four layers, and each layer has unique Ag contents. Moreover, the four layers comprise, from the inside to the surface, a first layer through a fourth layer. Contents of Ag in the respective four layers are: 1-4 at% in the first layer; 5-9 at% in the second layer; 10-16 at% in the third layer; and 17-20 at% in the fourth layer.
Abstract:
The present invention is aimed at providing a TiAgN coating layer, a TiAgN coating method, and a TiAgN coating apparatus. The TiAgN coating layer has excellent load carrying properties and wear resistance, and, at the same time, is capable of maximizing low-friction characteristics, by overgrowing Ag, a soft metal, on a TiAgN coating having a high hardness, to grant softness to the surface of the TiAgN coating and to make Ag move onto the surface in a situation of a metal to metal contact when the temperature rises. According to the present invention regarding the TiAgN coating layer, the TiAgN coating method, and the TiAgN coating apparatus, a friction coefficient at room temperature (25°C) is 0.41 or higher, and a friction coefficient at a high temperature (200°C) is 0.32 or higher.
Abstract:
Disclosed are a multilayered coating layer on which a first coating layer composed of TiN and a second coating layer composed of TiAgN are laminated to be repeatedly alternated and a coating method for the same. A first coating layer (30) and a second coating layer (40) are individually formed at the thickness of 20-300 nm. Ag in whole atoms composing the first coating layer (30) and the second coating layer (40) is 7-20at%.
Abstract:
PURPOSE: A low specific gravity alloy and a method for manufacturing the same are provided to improve yield strength at over 10% against an existing low specific gravity alloy system through precipitation strengthening. CONSTITUTION: A low specific gravity alloy includes Fe as a main component, 10 to 20 wt% of Al, 5 to 20 wt% of Mn, 0.5 to 1 wt% of C, 1 to 3 wt% of Cr, 1 to 3 wt% of Si, 2 to 4 wt% of Mg, below 0.02% of P(excluding 0%), below 0.01% of S(excluding 0%), and other inevitable impurities. The specific gravity of the alloy is 6.8g/cm^3 or less(excluding 0g/cm^3). A method for manufacturing the alloy includes: a step of raising the temperature of molten metal having Fe as a main component, and then adding 0.5 to 1 wt% of C to the molten metal; a step of adding 5 to 20 wt% of Mn, 1 to 3 wt% of Cr, and 1 to 3 wt% of Si to the molten metal; a step of charging a master alloy comprising 10 to 20 wt% of Al and 2 to 4 wt% of Mg to the molten metal; and a step of cooling the molten metal after charging the master alloy. [Reference numerals] (AA) Temperature rise; (BB) C added; (CC) Cr, Si, and Mn added; (DD) Al-20 wt% Mg charged, maintained for 30 min
Abstract translation:目的:提供低比重合金及其制造方法,以通过析出强化将现有的低比重合金体系的屈服强度提高10%以上。 构成:低比重合金包括Fe作为主要成分,Al:10〜20重量%,Mn:5〜20重量%,C:0.5〜1重量%,Cr:1〜3重量%,1:3重量% Si为2〜4重量%,P为0.02以下(不包括0%),S为0.01以下(不包括0%)以及其他不可避免的杂质。 合金的比重为6.8g / cm 3以下(不包括0g / cm 3)。 制造合金的方法包括:以Fe为主成分的熔融金属的升温温度,然后向熔融金属中添加0.5〜1重量%的C的工序; 向熔融金属中添加5〜20重量%的Mn,1〜3重量%的Cr和1〜3重量%的Si的工序; 将含有10〜20重量%的Al和2〜4重量%的Mg的母合金装入熔融金属的工序; 以及在对所述母合金充电之后冷却所述熔融金属的步骤。 (标号)(AA)升温; (BB)C加; (CC)Cr,Si和Mn; (DD)Al-20重量%Mg,保持30分钟
Abstract:
PURPOSE: A method for surface-treating an engine driving part and the engine driving part surface-treated by the same are provided to deposit Ag as a functional element on a TiN material having an excellent heat resistant property, thereby maximizing the heat resistant property and a low frictional property. CONSTITUTION: A method for surface-treating an engine driving part includes: a step of maintaining the inner side of a coating chamber to be vacuous; a step of heating the coating chamber until temperature distribution at the surface and the inner side of a target to be coated is uniform; a step of removing foreign matters from the surface of the target; a step of depositing a buffer layer in order to improve bonding strength between the coating layer boundary surfaces of the target; a step of applying a biased voltage to the target on which the buffer layer is deposited in order to coat the target with a TiAgN coating material; and a step of cooling the target on which the coating material is coated. [Reference numerals] (AA) Step of making a vacuum in a coating chamber; (BB) Step of heating the coating chamber; (CC) Step of cleaning a coating target; (DD) Step of depositing a buffer layer on the coating target; (EE) Step of coating TiAgN on the coating target; (FF) Step of cooling the coated coating target
Abstract:
PURPOSE: A pollution level measuring method for a PVD coater is provided to improve cleaning efficiency by cleaning if the pollution level measurement of a coating material inside a coater chamber is same or greater than a predetermined level. CONSTITUTION: A pollution level measuring method for a PVD coater comprises following steps: attaching a silicon wafer for adhesion to the inside of a PVD coater before a coating operation(S100); separating the silicon wafer after the coating operation and partially cutting the separated silicon wafer(S200); and checking whether the pollution level of an coating material is same or greater than a predetermined level by measuring the coating thickness of the silicon wafer cut surface(S330). [Reference numerals] (AA) Start; (S100) Attaching a wafer; (S200) Cutting the wafer; (S310) Measuring the coating thickness of a cut surface; (S320) Checking a pollution level; (S330) Polluted over a predetermined level?; (S400) Performing cleaning;
Abstract:
PURPOSE: A light weight and high-stiffness door impact bar and a manufacturing method thereof are provided to obtain the door impact bar lighter than the existing steel door impact bar while satisfying sufficient strength conditions and having excellent energy-absorbing performance. CONSTITUTION: A light weight and high-stiffness door impact bar is installed to the space between inner and outer panels for a vehicle. The light weight and high-stiffness door impact bar comprises two outer wall plates(10) made of an aluminum alloy material and a honeycomb core(20) made of an aluminum alloy material. The honeycomb core forms plate-type structure of a honeycomb shape to which plural hexagonal structures(21) are integrally formed. The honeycomb core is interposed between the outer wall plates. An epoxy-based foaming filler(22) is filled in the inner empty space of each hexagonal structure of the honeycomb.