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    • 3. 发明公开
    • 영구자석 및 영구자석의 제조방법
    • 永磁体和永磁体的制造方法
    • KR1020090091203A
    • 2009-08-26
    • KR1020097012985
    • 2007-12-19
    • 가부시키가이샤 알박
    • 나가타히로시나카무라큐조카토우타케오나카쯔카아쯔시무카에이치로우이토우마사미요시이즈미류신가키요시노리
    • H01F1/08H01F41/02
    • C22C33/0242B22F2998/00B22F2998/10B22F2999/00C22C2202/02H01F41/0273H01F41/0293C22C33/0278B22F3/12B22F2201/40B22F2201/10B22F2201/20
    • Disclosed is a method for producing a permanent magnet having extremely high coercivity and high magnetic characteristics with high productivity. Specifically, there are performed a first step for adhering at least one of Dy and Tb to at least a part of the surface of an iron-boron-rare earth sintered magnet, and a second step for dispersing at least one of Dy and Tb adhering to the surface of the sintered magnet into the crystal grain boundary phase of the sintered magnet by conducting a heat treatment at a certain temperature. A magnet obtained by mixing a powder of a main phase alloy (which is mainly composed of an R2T14B phase wherein R represents at least one rare earth element mainly composed of Nd, and T represents a transition metal alloy mainly composed of Fe) and a powder of a liquid phase alloy (which has a higher R content than the R2T14B phase and is mainly composed of an R-rich phase) at a certain mixing ratio, press molding the thus-obtained mixed powder in a magnetic field, and then sintering the molded body in a vacuum or in an inert gas atmosphere is used as the sintering magnet. ® KIPO & WIPO 2009
    • 公开了一种制造具有高矫顽磁力和高磁特性并具有高生产率的永久磁铁的方法。 具体而言,进行将Dy和Tb中的至少一种与铁 - 硼 - 稀土类烧结磁体的至少一部分表面粘合的第一工序,以及分散Dy和Tb中的至少一种附着的第二工序 通过在一定温度下进行热处理,将烧结磁体的表面形成为烧结磁体的晶界相。 将主相合金(主要由R2T14B相组成的粉末,其中R表示至少一种主要由Nd组成的稀土元素,T表示主要由Fe组成的过渡金属合金)和粉末 的液相合金(其比R2T14B相具有更高的R含量并且主要由富R相组成)以一定的混合比将该所得混合粉末在磁场中进行压制成型,然后烧结 在真空中或惰性气体气氛中使用成型体作为烧结磁体。 ®KIPO&WIPO 2009
    • 5. 发明公开
    • 금속재의 표면 코팅재료와 코팅 방법
    • 使用该金属组分的涂料和涂料方法
    • KR1020010091712A
    • 2001-10-23
    • KR1020000013680
    • 2000-03-17
    • 대우조선해양 주식회사
    • 한종만김양수이상혁
    • C23C10/50
    • C23C10/50C22C33/0242C22C38/06
    • PURPOSE: To prevent corrosion of such metal components as bolt and nut that are used in the assembly of a main deck of a ship, a base metal and a coating material are charged together in a sealed furnace under a non-oxidation atmosphere(Ar gas injection). CONSTITUTION: The coating method comprises the steps of (i) charging a base metal and a coating material consisting of aluminum powder 5-45wt.%, alumina powder, NH4Cl 1-5wt.% into a sealed furnace; (ii) injecting Ar gas in the ratio of 2L/min to prevent corrosion of the base metal; (iii) heating the furnace in the temperature range of 850 to 950deg.C for 4-6hrs to form AlFe layer on the surface of the base metal; (iv) keeping the furnace in the temperature range of 800 to 1000deg.C for 12-48hrs to form Al2O3 layer on the surface of the base metal. In the coating operation, ratio of temperature changes is about 50deg.C/hr to prevent peeling of the coating material from the surface of the base metal.
    • 目的:为了防止在船舶主甲板的组装中使用的螺栓和螺母等金属部件的腐蚀,在非氧化气氛(Ar气体)下,在密封的炉中将基体金属和涂层材料一起装入 注射)。 构成:涂布方法包括以下步骤:(i)将5-45重量%的铝粉,氧化铝粉,NH 4 Cl 5重量%的铝粉和铝涂层材料装入密封炉中; (ii)以2L / min的比例注入Ar气体以防止贱金属的腐蚀; (iii)在850〜950℃的温度范围内加热炉4-6小时,以在母材表面形成AlFe层; (iv)将炉子保持在800〜1000℃的温度范围内12-48小时,以在母材表面形成Al2O3层。 在涂布操作中,温度变化率为约50℃/小时,以防止涂层材料从贱金属的表面剥离。