A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MANUFACTURING METHOD OF BORON NITRIDE POLYCRYSTALLINE, BORON NITRIDE POLYCRYSTALLINE, CUTTING TOOL, WEAR RESISTANT TOOL AND GRINDING TOOL
PROBLEM TO BE SOLVED: To provide a manufacturing method of boron nitride polycrystalline having a fine structure and toughness.SOLUTION: There is provided a manufacturing method of boron nitride polycrystalline including a first process for heat treating high pressure phase boron nitride polycrystalline, in which crystal particles of one or more kind of cubic boron nitride, wurtzite type boron nitride and compression type hexagonal boron nitride bind directly each other, at 1300°C or more, preferably 2100°C or less to obtain ordinary pressure phase boron nitride, and a second process for sintering the ordinary pressure phase boron nitride under a condition of 8 to 20 GPa and 1200 to 2300°C to obtain the boron nitride polycrystalline. There is provided a manufacturing method of boron nitride polycrystalline containing preferably the wurtzite type boron nitride of 0.01 vol.% or more and more preferably the compression type hexagonal boron nitride.SELECTED DRAWING: None
【課題】微細な組織を有し、かつ強靭となる窒化ホウ素多結晶体の製造方法の提供。【解決手段】立方晶窒化ホウ素、ウルツ鉱型窒化ホウ素および圧縮型六方晶窒化ホウ素のいずれか１種または２種以上の結晶粒が相互に直接結合した高圧相窒化ホウ素多結晶体を１３００℃以上で、好ましくは２１００℃以下で熱処理することにより常圧相窒化ホウ素を得る第１工程と、前記常圧相窒化ホウ素を、８〜２０ＧＰａかつ１２００〜２３００℃の条件下で焼結することにより窒化ホウ素多結晶体を得る第２工程とを含む窒化ホウ素多結晶体の製造方法。好ましくは前記ウルツ型窒化ホウ素を０．０１体積％以上含み、更に前記圧縮型六方晶窒化ホウ素を含むことが、好ましい、窒化ホウ素多結晶体の製造方法。【選択図】なし
MANUFACTURING METHOD OF BORON NITRIDE POLYCRYSTALLINE, BORON NITRIDE POLYCRYSTALLINE, CUTTING TOOL, WEAR RESISTANT TOOL AND GRINDING TOOL
PROBLEM TO BE SOLVED: To provide a manufacturing method of boron nitride polycrystalline having a fine structure and toughness.SOLUTION: There is provided a manufacturing method of boron nitride polycrystalline including a first process for heat treating high pressure phase boron nitride polycrystalline, in which crystal particles of one or more kind of cubic boron nitride, wurtzite type boron nitride and compression type hexagonal boron nitride bind directly each other, at 1300°C or more, preferably 2100°C or less to obtain ordinary pressure phase boron nitride, and a second process for sintering the ordinary pressure phase boron nitride under a condition of 8 to 20 GPa and 1200 to 2300°C to obtain the boron nitride polycrystalline. There is provided a manufacturing method of boron nitride polycrystalline containing preferably the wurtzite type boron nitride of 0.01 vol.% or more and more preferably the compression type hexagonal boron nitride.SELECTED DRAWING: None
【課題】微細な組織を有し、かつ強靭となる窒化ホウ素多結晶体の製造方法の提供。【解決手段】立方晶窒化ホウ素、ウルツ鉱型窒化ホウ素および圧縮型六方晶窒化ホウ素のいずれか１種または２種以上の結晶粒が相互に直接結合した高圧相窒化ホウ素多結晶体を１３００℃以上で、好ましくは２１００℃以下で熱処理することにより常圧相窒化ホウ素を得る第１工程と、前記常圧相窒化ホウ素を、８〜２０ＧＰａかつ１２００〜２３００℃の条件下で焼結することにより窒化ホウ素多結晶体を得る第２工程とを含む窒化ホウ素多結晶体の製造方法。好ましくは前記ウルツ型窒化ホウ素を０．０１体積％以上含み、更に前記圧縮型六方晶窒化ホウ素を含むことが、好ましい、窒化ホウ素多結晶体の製造方法。【選択図】なし
MANUFACTURING METHOD OF BORON NITRIDE POLYCRYSTALLINE, BORON NITRIDE POLYCRYSTALLINE, CUTTING TOOL, WEAR RESISTANT TOOL AND GRINDING TOOL
窒化ホウ素多結晶体の製造方法、窒化ホウ素多結晶体、切削工具、耐摩工具および研削工具
ISHIDA TAKESHI (author) / SUMIYA HITOSHI (author)
2018-04-12
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
B21D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
,
Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs
/
B23B
Drehen
,
TURNING
/
B23C
Fräsen
,
MILLING
/
B23D
Hobeln
,
PLANING
/
B23F
Herstellen von Zahnrädern oder Zahnstangen
,
MAKING GEARS OR TOOTHED RACKS
/
B23G
Gewindeschneiden
,
THREAD CUTTING
/
B24D
TOOLS FOR GRINDING, BUFFING OR SHARPENING
,
Werkzeuge zum Schleifen, Polieren oder Schärfen
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