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    • 2. 发明专利
    • Method of manufacturing grain-oriented electromagnetic steel sheet
    • 制造面向导电电磁钢板的方法
    • JP2012144776A
    • 2012-08-02
    • JP2011004307
    • 2011-01-12
    • Nippon Steel Corp新日本製鐵株式会社
    • TAKAHASHI FUMIAKIUSHIGAMI YOSHIYUKIMIZUKAMI KAZUSANENAKAMURA SHUICHIFUJII NOBUNORIYAMAMOTO NORIHIROURASATO MASAHIDE
    • C22C38/00C21D8/12C22C38/60H01F1/16
    • PROBLEM TO BE SOLVED: To provide a means for obtaining a grain-oriented electromagnetic steel sheet having excellent magnetic characteristics.SOLUTION: In a raw material for the electromagnetic steel sheet, which contains, by mass%, 0.8-7% Si, 0.01-0.065% acid-soluble Al, 0.004-0.012% N, 0.05-1% Mn, 0.0005-0.0080% B, 0.003-0.015% in total of at least one kind selected from a group comprising S and Se, 0.085% or less C, and the remainder comprising Fe and inevitable impurities, a hot-rolled steel sheet satisfies expression 1: SB≥5%, when B in the steel after a hot-rolling process is analyzed by PSA analysis using spark discharge optical emission spectrometry method. The SB is a value obtained from the total amount, insoluble component amount, and solid solution component amount of the specified components in the metal based on a pulse intensity order drawing in which optical emission intensity of specified components obtained by discharge using the optical emission spectrometry method is rearranged in order.
    • 要解决的问题:提供一种获得具有优异磁特性的晶粒取向电磁钢板的方法。 解决方案:在电磁钢板的原料中,以质量%计含有0.8〜7%的Si,0.01〜0.065%的酸溶性Al,0.004〜0.012%的N,0.05〜1%的Mn,0.0005 -0.0080%B,0.003-0.015%,选自由S和Se组成的组中的至少一种,C组为0.085%以下,余量为Fe和不可避免的杂质,热轧钢板满足式1: 当使用火花放电发射光谱法进行PSA分析,热轧过程中钢中的B分析时,S Insol B≥5%。 S Insol B是从金属中的特定成分的总量,不溶成分量和固溶成分量基于脉冲强度次序图得到的值,其中 使用光发射光谱法通过放电获得的特定成分的光发射强度按顺序重新排列。 版权所有(C)2012,JPO&INPIT
    • 9. 发明专利
    • Grain-oriented electrical steel sheet and its manufacturing method
    • 面向电磁钢板及其制造方法
    • JP2009235568A
    • 2009-10-15
    • JP2009049911
    • 2009-03-03
    • Nippon Steel Corp新日本製鐵株式会社
    • TAKAHASHI FUMIAKITAKEBAYASHI KIYONORIYAMAZAKI SHUICHINATORI YOSHIAKI
    • C22C38/00C21D8/12C21D9/46C22C38/06C23C22/00H01F1/16H01F1/18
    • PROBLEM TO BE SOLVED: To provide a grain oriented electrical steel sheet having satisfactory glass film excellent in magnetic characteristics and free from defects.
      SOLUTION: The grain oriented electrical steel sheet includes: (a) the amount of oxygen over the entire part of the steel sheet after carburization annealing is 400 to 1,500 ppm; (b) the region where the precipitates including silicon oxide of ≥8 in linearity of two-dimensional shape in the oxide layer on the steel sheet surface exist in a range of ≥3 pieces/μm
      2 is ≥30% over the entire part of the oxide layer; (c) the state that there are no oxides within the oxide layer exists intermittently or does not exist continuously in a region of a thickness of ≥0.2 μm in a sheet thickness direction; and, if necessary, (d) the surface thickening rate of silicon in the surface oxide layer is ≥0.3 to ≤0.85. The grain oriented electrical steel sheet is manufactured by switching the oxygen potential of the atmosphere during decarburization annealing during the course of soaking.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供具有良好的磁特性和无缺陷的令人满意的玻璃膜的晶粒取向电工钢板。 解决方案:晶粒取向电工钢板包括:(a)渗碳退火后钢板整个氧气的量为400〜1500ppm; (b)在钢板表面的氧化物层中存在二维形状的二氧化硅≥8的析出物的区域存在≥3个/μm 2 的范围为≥ 在氧化物层的整个部分上为30%; (c)在厚度方向上厚度≥0.2μm的区域内,氧化物层内没有氧化物间断地或不连续地存在的状态; 如果需要,(d)表面氧化物层中的硅的表面增厚率为≥0.3〜≤0.85。 在浸渍过程中,通过在脱碳退火时切换大气的氧气来制造晶粒取向电工钢板。 版权所有(C)2010,JPO&INPIT
    • 10. 发明专利
    • Electrostatic chuck
    • 静电卡
    • JP2005303237A
    • 2005-10-27
    • JP2004121342
    • 2004-04-16
    • Nippon Steel Corp新日本製鐵株式会社
    • ANDO AKIROTAKAHASHI FUMIAKIOKITA TAKUSHISUGAWARA JUNMORITA HIDEHIKO
    • C04B35/00C04B35/495H01L21/027H01L21/68H01L21/683H02N13/00
    • PROBLEM TO BE SOLVED: To provide an electrostatic chuck capable of stably carrying out electrostatic chucking by the Johnsen-Rahbeck force. SOLUTION: The electrostatic chuck has a dielectric part composed of a material which is substantially a single-phase material and has the absolute value of the thermal expansion coefficient at room temperature of 6×10 -7 /K or lower, bulk density of 95% or higher, and volume resistivity of 1×10 12 Ωcm or higher and lower than 1×10 14 Ωcm. The material constituting the dielectric part has Young's modulus of 100 GPa or larger and specific rigidity of 40 GPa/g or larger. The chemical composition of the material constituting the dielectric part is in the ranges of MgO: 8.0 to 17.2 mass%, Al 2 O 3 : 22.0 to 38.0 mass %, SiO 2 : 49.5 to 65.0 mass%, and Li 2 O: 1 to 2.5 mass%, while the mass ratios of the chemical composition are (SiO 2 -8×Li 2 O)/MgO≥3.0 and (SiO 2 -8×Li 2 O)/Al 2 O 3 ≥1.2. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供能够通过Johnsen-Rahbeck力稳定地进行静电吸附的静电卡盘。 解决方案:静电卡盘具有由基本上为单相材料的材料构成的介电部分,并且室温下的热膨胀系数的绝对值为6×10 -7 / K或更低,体积密度为95%或更高,体积电阻率为1×10 12 / SP>Ωcm或更高且低于1×10 14 / SP>Ωcm。 构成电介质部件的材料的杨氏模量为100GPa以上,比刚性为40GPa / g以上。 构成电介质部件的材料的化学组成在MgO:8.0〜17.2质量%的范围内,Al 2 O 3 / SB 3:22.0〜38.0质量%,SiO 2, SB> 2 :49.5〜65.0质量%,Li 2 -8×Li 2 O)/MgO≥3.0和(SiO 2 -8×Li 2 O)/ Al 0 3 ≥1.2。 版权所有(C)2006,JPO&NCIPI