公开(公告)号：US11920072B2

公开(公告)日：2024-03-05

申请号：US16845807

申请日：2020-04-10

Applicant: NICHIA CORPORATION

Inventor： Masaki Kondo ,  Shozo Taketomi ,  Hirofumi Oguri

IPC: C09K11/77 ,  B22F1/142 ,  B22F7/00 ,  C01F17/34 ,  C04B35/117 ,  C04B35/44 ,  C04B35/626 ,  C04B35/64 ,  C09K11/02 ,  C09K11/08 ,  G03B21/20 ,  H01L33/50

CPC classification number: C09K11/7774 ,  B22F1/142 ,  B22F7/008 ,  C01F17/34 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C09K11/02 ,  G03B21/204 ,  H01L33/502 ,  B22F2201/03 ,  B22F2301/45 ,  B22F2302/25 ,  B22F2303/01 ,  B22F2304/10 ,  C04B35/62685 ,  C04B2235/3224 ,  C04B2235/3229 ,  C04B2235/5436 ,  C04B2235/5445 ,  C09K11/0838

Abstract: A method for producing a rare earth aluminate sintered body includes: preparing a molded body by mixing a fluorescent material having a composition of a rare earth aluminate and a raw material mixture comprising an oxide containing at least one rare earth element Ln selected from the group consisting of Y, La, Lu, Gd, and Tb, an oxide containing Ce, an oxide containing Al, and optionally an oxide containing at least one element M1 selected from the group consisting of Ga and Sc; and calcining the molded body to obtain a sintered body.

公开(公告)号：US11851375B2

公开(公告)日：2023-12-26

申请号：US17304956

申请日：2021-06-29

Applicant: NICHIA CORPORATION

Inventor： Toshiyuki Hirai ,  Keisuke Suzuki ,  Hirofumi Oguri

IPC: C04B35/10 ,  C04B35/64 ,  C04B35/44 ,  C09K11/77 ,  C04B35/117 ,  C04B35/645 ,  C04B111/80

CPC classification number: C04B35/10 ,  C04B35/117 ,  C04B35/44 ,  C04B35/64 ,  C04B35/6455 ,  C09K11/7774 ,  C04B2111/807 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/661 ,  C04B2235/662 ,  C04B2235/77 ,  C04B2235/78 ,  C04B2235/786 ,  C04B2235/963

Abstract: A method for producing a ceramic complex includes: preparing a raw material mixture that contains 5% by mass or more and 40% by mass or less of first rare earth aluminate fluorescent material particles containing an activating element and a first rare earth element different from the activating element, 0.1% by mass or more and 32% by mass or less of oxide particles containing a second rare earth element, and the balance of aluminum oxide particles, relative to 100% by mass of the total amount of the first rare earth aluminate fluorescent material particles, the oxide particles, and the aluminum oxide particles; preparing a molded body of the raw material mixture; and obtaining a sintered body by calcining the molded body in a temperature range of 1,550° C. or higher and 1,800° C. or lower.