公开(公告)号：US20130214463A1

公开(公告)日：2013-08-22

申请号：US13845257

申请日：2013-03-18

Applicant: HITACHI METALS, LTD.

Inventor： Hirohisa SUWABE ,  Masaru YOSHIDA ,  Tomomasa KUMAGAI ,  Hideya YAMANE

IPC: B29C71/02

CPC classification number: B29C71/02 ,  C03C14/00 ,  C03C2214/20 ,  C04B35/478 ,  C04B38/0006 ,  C04B41/009 ,  C04B41/5089 ,  C04B41/85 ,  C04B2111/00793 ,  C04B2111/0081 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3232 ,  C04B2235/3418 ,  C04B2235/36 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5463 ,  C04B2235/656 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/77 ,  C04B2235/80 ,  C04B2235/9607 ,  F01N3/0222 ,  C04B38/0054 ,  C04B38/0074 ,  C04B38/068 ,  C04B41/5041

Abstract: A ceramic honeycomb structure having a large number of flow paths partitioned by porous cell walls, the cell walls comprising at least main crystals of aluminum titanate, in which MgO and SiO2 are dissolved to form a solid solution, and glass phases, the glass phases containing 40-80% by mass of SiO2 and 1-20% by mass of MgO, the average size of the glass phases being 30 μm or less in a cross section of the cell walls, and the area ratio of the glass phases to the total area of the main crystals of aluminum titanate and the glass phases being 2-12% in a cross section of the cell walls, and its production method.

Abstract translation: 一种陶瓷蜂窝结构体，其具有多孔细胞壁分隔的大量流路，所述细胞壁至少包含溶解有MgO和SiO 2以形成固溶体的钛酸铝的主晶体，玻璃相含有 40-80质量％的SiO 2和1-20质量％的MgO，玻璃相的平均尺寸在细胞壁的截面中为30μm以下，玻璃相与总体的面积比 钛酸铝的主晶体的面积和玻璃相在细胞壁的横截面中为2-12％，及其制造方法。

公开(公告)号：US20190376169A1

公开(公告)日：2019-12-12

申请号：US16432979

申请日：2019-06-06

Applicant: HITACHI METALS, LTD.

Inventor： Makoto OKAI ,  Hideki YAMAURA ,  Kazutoshi SUGIE ,  Hideya YAMANE

IPC: C22C47/08 ,  C01B21/064 ,  C22C49/06 ,  C22C49/14

Abstract: Provided is a method for producing a boron nitride nanotube-reinforced aluminum composite casting, the method being capable of reducing cost. The method for producing a boron nitride nanotube-reinforced aluminum composite casting comprises the steps of: (a) mixing boron nitride nanotubes and a first aluminum matrix and then pelletizing the resulting mixture; (b) heating and subjecting pellets obtained in step (a) to melt mixing to obtain a melt; (c) cooling and solidifying the melt obtained in step (b) to obtain a master batch; and (d) subjecting the master batch obtained in step (c) and the second aluminum matrix to melt mixing, and then cooling and solidifying the resulting mixture.

公开(公告)号：US20190316233A1

公开(公告)日：2019-10-17

申请号：US16384483

申请日：2019-04-15

Applicant: HITACHI METALS, LTD.

Inventor： Makoto OKAI ,  Hideki YAMAURA ,  Hideya YAMANE

IPC: C22C32/00 ,  C22C1/02

Abstract: There is provided a composite of a metallic matrix and boron nitride nanotubes, the metallic matrix including aluminum or an aluminum alloy. Also, there is provided a method for manufacturing the composite. The method includes: a powder mixing step of mixing a powder of boron nitride nanotubes and a powder of an element soluble in a molten metal of the metallic matrix to prepare a powder mixture of boron nitride nanotubes and a metallic matrix-soluble element; an alloy melt mixing step of mixing the powder mixture and the molten metal of the metallic matrix to prepare a metallic matrix melt mixed with boron nitride nanotubes; and a casting step of solidifying the metallic matrix melt mixed with boron nitride nanotubes to obtain the composite.