会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明专利
    • Tungsten carbide powder having nano particle size and its manufacturing method
    • 具有纳米颗粒尺寸的碳纳米管粉及其制造方法
    • JP2005335997A
    • 2005-12-08
    • JP2004155623
    • 2004-05-26
    • Allied Material Corp株式会社アライドマテリアル
    • YAMAMOTO RYOJIMIZUKAMI MASAHIKOASADA NOBUAKI
    • C01B32/949C01B31/34
    • PROBLEM TO BE SOLVED: To provide a tungsten powder having an average particle size of 100 nm or smaller from which hard materials such as a cemented alloy, a tungsten carbide sintered material, and a composite ceramic material having a higher hardness and a higher strength can be obtained, and its manufacturing method. SOLUTION: The method of manufacturing a nano particle size tungsten powder for obtaining a tungsten carbide powder, of which the total carbon amount is 6.13±0.30 mass%, the free carbon amount is 0.30 mass% or less, the oxygen amount is 0.7 mass% or less, the iron amount is 200 ppm or less, and the average particle size is 100 nm or smaller; is provided with a first heat treatment process in which a mixture of a micro tungsten oxide (WO 3 or WO 2.90 ) powder and a carbon powder is heated to 1,050-1,200°C in N 2 to be reduced to an intermediate product where W, W 2 C, and WC coexist, and a second heat treatment process in which the above-mentioned intermediate product or an intermediate product subjected to a pulverizing treatment and a mixing treatment is heated to 900-1,300°C in H 2 to be carbonized to the tungsten carbide powder. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供平均粒度为100nm以下的钨粉末,由硬质材料如硬质合金,碳化钨烧结材料和具有较高硬度的复合陶瓷材料制成, 可以获得更高的强度及其制造方法。 解决方案:制备用于获得碳碳化钨粉末的纳米粒度钨粉末的方法,其总碳量为6.13±0.30质量%,游离碳量为0.30质量%以下,氧量为 0.7质量%以下,铁量为200ppm以下,平均粒径为100nm以下。 提供了第一热处理工艺,其中将微量氧化钨(WO 3 / SB>或WO 2.90 )粉末和碳粉末的混合物加热至1050-1200℃ 在N 2 中的C被还原成W,W< SB> C和WC共存的中间产物,以及第二热处理工艺,其中上述中间产物 或将经过粉碎处理和混合处理的中间产物在H SB 2中加热至900-1,300℃以碳化为碳化钨粉末。 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Compound carbide powder provided with nano particle diameter and its production method
    • 具有纳米颗粒直径的化合物碳粉及其生产方法
    • JP2005336536A
    • 2005-12-08
    • JP2004155967
    • 2004-05-26
    • Allied Material Corp株式会社アライドマテリアル
    • YAMAMOTO RYOJIMIZUKAMI MASAHIKOMATSUMOTO AKIHIDE
    • C01B31/30B22F1/00C01B31/34C22C1/05C22C29/08
    • PROBLEM TO BE SOLVED: To provide compound carbide powder with a mean particle diameter of ≤100 nm with which the increase of the hardness and strength in a hard material such as a cemented carbide, a tungsten carbide sintered material, and a compound ceramics material can be attained, and to provide an effective method for adding a particle growth inhibitor of effectively inhibiting the growth of particles occurring in the sintering stage of hyperfine cemented carbide.
      SOLUTION: The method for producing compound carbide powder includes: a first heat treatment stage where a mixture composed of hyperfine tungsten oxide (WO
      3 or WO
      2.90 ), carbon powder and one or more of the oxide powder and carbide powder finer than 1.5 μm of Cr, V, Ta and Nb in 0.2 to 2.0 mass% as additives is carbonized in N
      2 ; and a second heat treatment stage where the intermediate product subjected to the mixing treatment is carbonized in H
      2 into the compound carbide powder having a total carbon content of 6.10±0.30 mass%, a free carbon content of ≤0.30 mass%, an oxygen content of ≤0.7 mass%, an iron content of ≤200 ppm, and a mean particle diameter of ≤100 nm.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供平均粒径≤100nm的复合碳化物粉末,硬质合金,碳化钨烧结材料和化合物等硬质材料的硬度和强度提高 可以获得陶瓷材料,并提供一种有效抑制超细高硬质合金烧结阶段发生的颗粒生长的颗粒生长抑制剂的有效方法。 解决方案:复合碳化物粉末的制造方法包括:第一热处理阶段,其中由超细氧化钨(WO 3 或WO 2.90 )组成的混合物,碳 将作为添加剂的0.2质量%至2.0质量%的Cr,V,Ta和Nb中的1.5μm以上的氧化物粉末和碳化物粉末中的一种以上的碳化物粉末在N 2中碳化; 以及第二热处理阶段,其中进行混合处理的中间产物在H 2 中碳化到总碳含量为6.10±0.30质量%的复合碳化物粉末中,游离碳含量≤ 0.30质量%,氧含量≤0.7质量%,铁含量≤200ppm,平均粒径≤100nm。 版权所有(C)2006,JPO&NCIPI