US 12,139,618 B2
Silicon-containing oxide-coated aluminum nitride particle and method of manufacturing the same
Yuki Otsuka, Yokohama (JP); Hidetoshi Okamoto, Yokohama (JP); and Naoki Minorikawa, Yokohama (JP)
Assigned to Resonac Corporation, Tokyo (JP)
Filed by SHOWA DENKO K.K., Tokyo (JP)
Filed on Jun. 30, 2022, as Appl. No. 17/855,481.
Application 17/855,481 is a continuation of application No. 17/270,202, granted, now 11,396,602, previously published as PCT/JP2019/033159, filed on Aug. 23, 2019.
Claims priority of application No. 2018-157563 (JP), filed on Aug. 24, 2018; and application No. 2019-095576 (JP), filed on May 21, 2019.
Prior Publication US 2022/0363912 A1, Nov. 17, 2022
Int. Cl. C09C 3/12 (2006.01); C09C 1/40 (2006.01)
CPC C09C 3/12 (2013.01) [C09C 1/40 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A silicon-containing oxide-coated aluminum nitride particle including an aluminum nitride particle and a silicon-containing oxide coating covering the surface of the aluminum nitride particle, wherein
the content of carbon atoms is less than 1000 ppm by mass,
the coverage of the silicon-containing oxide coating covering the surface of the aluminum nitride particle as measured by LEIS analysis is 15% or more and 100% or less, and
the silicon-containing oxide-coated aluminum nitride particle satisfies the following formula (4) wherein x represents the specific surface area (m2/g) of a silicon-containing oxide-coated aluminum nitride particle as determined by a BET method, and y represents the content of silicon atoms (ppm by mass) in a silicon-containing oxide-coated aluminum nitride particle,
y≤1000x+500  (4).