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公开(公告)号：US10280488B2
公开(公告)日：2019-05-07
申请号：US15741916
申请日：2017-02-02
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
IPC分类号： B22F1/02 , C22C1/00 , C22C33/02 , B22F1/00 , C03C8/02 , B24D18/00 , C22C38/04 , C03C3/091 , C22C32/00 , C22C38/00 , B22F9/04
摘要： An iron-based powder for powder metallurgy includes an iron-based powder and a composite oxide powder, and the composite oxide contains, by mass, from 15% to 30% Si, from 9% to 18% Al, from 3% to 6% B, from 0.5% to 3% Mg, from 2% to 6% Ca, from 0.01% to 1% Sr, and from 45% to 55% O.
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公开(公告)号：US20170369977A1
公开(公告)日：2017-12-28
申请号：US15534133
申请日：2016-08-30
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
CPC分类号： C22C49/14 , C22C32/0026 , C22C33/0228 , C22C38/00 , C22C38/002 , C22C38/04 , C22C47/14
摘要： An iron-based sintered body includes a metal matrix and complex oxide particles contained in the metal matrix. When a main viewing field having an area of 176 μm×226 μm is taken on a cross section of the iron-based sintered body and divided into a 5×5 array of 25 viewing fields each having an area of 35.2 μm×45.2 μm, the complex oxide particles have an average equivalent circle diameter of from 0.3 μm to 2.5 μm inclusive, and a value obtained by dividing the total area of the 25 viewing fields by the total number of complex oxide particles present in the 25 viewing fields is from 10 μm2/particle to 1,000 μm2/particle inclusive. The number of viewing fields in which no complex oxide particle is present is 4 or less out of the 25 viewing fields.
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公开(公告)号：US10196716B2
公开(公告)日：2019-02-05
申请号：US15741916
申请日：2017-02-02
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
IPC分类号： B22F1/02 , C22C1/00 , C22C33/02 , B22F1/00 , C03C8/02 , B24D18/00 , C22C38/04 , C03C3/091 , C22C32/00 , C22C38/00 , B22F9/04
摘要： An iron-based powder for powder metallurgy includes an iron-based powder and a composite oxide powder, and the composite oxide contains, by mass, from 15% to 30% Si, from 9% to 18% Al, from 3% to 6% B, from 0.5% to 3% Mg, from 2% to 6% Ca, from 0.01% to 1% Sr, and from 45% to 55% O.
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公开(公告)号：US11591681B2
公开(公告)日：2023-02-28
申请号：US15534133
申请日：2016-08-30
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
摘要： An iron-based sintered body includes a metal matrix and complex oxide particles contained in the metal matrix. When a main viewing field having an area of 176 μm×226 μm is taken on a cross section of the iron-based sintered body and divided into a 5×5 array of 25 viewing fields each having an area of 35.2 μm×45.2 μm, the complex oxide particles have an average equivalent circle diameter of from 0.3 μm to 2.5 μm inclusive, and a value obtained by dividing the total area of the 25 viewing fields by the total number of complex oxide particles present in the 25 viewing fields is from 10 μm2/particle to 1,000 μm2/particle inclusive. The number of viewing fields in which no complex oxide particle is present is 4 or less out of the 25 viewing fields.
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5.发明申请公开(公告)号：US20180202029A1
公开(公告)日：2018-07-19
申请号：US15741916
申请日：2017-02-02
发明人： Tomoyuki Ueno , Koji Yamada , Kazuya Takizawa , Yuki Adachi , Tetsuya Hayashi
CPC分类号： C22C33/02 , B22F1/0011 , B22F9/04 , B22F2009/044 , B22F2301/35 , B22F2302/35 , B22F2304/10 , B22F2998/10 , B22F2999/00 , B24D18/0009 , C03C3/091 , C03C8/02 , C03C2214/08 , C22C32/0026 , C22C33/0228 , C22C38/00 , C22C38/04 , B22F3/02 , B22F3/10 , B22F7/06
摘要： An iron-based powder for powder metallurgy includes an iron-based powder and a composite oxide powder, and the composite oxide contains, by mass, from 15% to 30% Si, from 9% to 18% Al, from 3% to 6% B, from 0.5% to 3% Mg, from 2% to 6% Ca, from 0.01% to 1% Sr, and from 45% to 55% O.
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