JPH01164795A - Method for synthesizing diamond particles - Google Patents

Method for synthesizing diamond particles

Info

Publication number
JPH01164795A
JPH01164795A JP62320141A JP32014187A JPH01164795A JP H01164795 A JPH01164795 A JP H01164795A JP 62320141 A JP62320141 A JP 62320141A JP 32014187 A JP32014187 A JP 32014187A JP H01164795 A JPH01164795 A JP H01164795A
Authority
JP
Japan
Prior art keywords
diamond particles
plasma
powder
jetted
gaseous
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62320141A
Other versions
JP2584805B2 (en
Inventor
Nagaaki Etsuno
Motonobu Kawarada
Kazuaki Kurihara
Kenichi Sasaki
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62320141A priority Critical patent/JP2584805B2/en
Publication of JPH01164795A publication Critical patent/JPH01164795A/en
Application granted granted Critical
Publication of JP2584805B2 publication Critical patent/JP2584805B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0025Combination of two or more reflectors for a single light source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0008Reflectors for light sources providing for indirect lighting
    • F21V7/0016Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes

Abstract

PURPOSE:To continuously obtain diamond particles uniform in particle diameter with a simple device at high yield and at low cost by injecting gaseous powder incorporating diamond particles to thermal plasma jetted as a plasma jet and quenching the thermal plasma. CONSTITUTION:A DC plasma torch having a cathode 1 and an anode 2 is used and voltage is impressed between both electrodes 1, 2 while allowing discharge gas to flow and DC arc discharge is generated and arc plasma of >=5000 deg.C is generated and also a gaseous raw material consisting of H2 and CH4 which have fed to an arc plasma generating part from a discharge gas pipeline 5 provided on the anode 2 is heated and activated and jetted as high-velocity plasma jet 3. Then gaseous powder 4 incorporating fine diamond particles to be nucleus is injected to this jetted thermal plasma 3 through a powder filter 15 and allowed to collide against it and quenched and diamond is grown in a vapor phase on the surfaces of the fine diamond particles. Then diamond particles having been regulated to required size are sized with a size classifier 9 via a pump 8 and recovered in a powder collector 10.
JP62320141A 1987-12-19 1987-12-19 Method for the synthesis of diamond particles Expired - Lifetime JP2584805B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62320141A JP2584805B2 (en) 1987-12-19 1987-12-19 Method for the synthesis of diamond particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62320141A JP2584805B2 (en) 1987-12-19 1987-12-19 Method for the synthesis of diamond particles

Publications (2)

Publication Number Publication Date
JPH01164795A true JPH01164795A (en) 1989-06-28
JP2584805B2 JP2584805B2 (en) 1997-02-26

Family

ID=18118166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62320141A Expired - Lifetime JP2584805B2 (en) 1987-12-19 1987-12-19 Method for the synthesis of diamond particles

Country Status (1)

Country Link
JP (1) JP2584805B2 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005701A1 (en) * 1988-11-16 1990-05-31 Andrew Carey Good Diamond production
WO1992005110A1 (en) * 1990-09-24 1992-04-02 The Government Of The United States Of America, As Represented By The Secretary Of The Department Of The Navy Flame or plasma synthesis of diamond under turbulent and transition flow conditions
US5443861A (en) * 1991-05-16 1995-08-22 Utp Sshweissmaterial Gmbh & Co. Kg Process for manufacture of synthetic diamond layers on substrates
US5635254A (en) * 1993-01-12 1997-06-03 Martin Marietta Energy Systems, Inc. Plasma spraying method for forming diamond and diamond-like coatings
JP2010526664A (en) * 2007-05-11 2010-08-05 エスディーシー マテリアルズ インコーポレイテッド Particle production system and fluid recirculation method
US8859035B1 (en) 2009-12-15 2014-10-14 SDCmaterials, Inc. Powder treatment for enhanced flowability
US8865611B2 (en) 2009-12-15 2014-10-21 SDCmaterials, Inc. Method of forming a catalyst with inhibited mobility of nano-active material
US8969237B2 (en) 2011-08-19 2015-03-03 SDCmaterials, Inc. Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
US9089840B2 (en) 2007-10-15 2015-07-28 SDCmaterials, Inc. Method and system for forming plug and play oxide catalysts
US9126191B2 (en) 2009-12-15 2015-09-08 SDCmaterials, Inc. Advanced catalysts for automotive applications
US20150274534A1 (en) * 2014-03-31 2015-10-01 Case Western Reserve University Nanoscale diamond particles and method of forming nanoscale diamond particles
US9149797B2 (en) 2009-12-15 2015-10-06 SDCmaterials, Inc. Catalyst production method and system
US9156025B2 (en) 2012-11-21 2015-10-13 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9216406B2 (en) 2011-02-23 2015-12-22 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PtPd catalysts
US9427732B2 (en) 2013-10-22 2016-08-30 SDCmaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
US9511352B2 (en) 2012-11-21 2016-12-06 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9517448B2 (en) 2013-10-22 2016-12-13 SDCmaterials, Inc. Compositions of lean NOx trap (LNT) systems and methods of making and using same
US9522388B2 (en) 2009-12-15 2016-12-20 SDCmaterials, Inc. Pinning and affixing nano-active material
US9586179B2 (en) 2013-07-25 2017-03-07 SDCmaterials, Inc. Washcoats and coated substrates for catalytic converters and methods of making and using same
US9687811B2 (en) 2014-03-21 2017-06-27 SDCmaterials, Inc. Compositions for passive NOx adsorption (PNA) systems and methods of making and using same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101593832B1 (en) * 2014-03-10 2016-02-12 주식회사 닛포리 설계 Cleaning Tools

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005701A1 (en) * 1988-11-16 1990-05-31 Andrew Carey Good Diamond production
WO1992005110A1 (en) * 1990-09-24 1992-04-02 The Government Of The United States Of America, As Represented By The Secretary Of The Department Of The Navy Flame or plasma synthesis of diamond under turbulent and transition flow conditions
US5443861A (en) * 1991-05-16 1995-08-22 Utp Sshweissmaterial Gmbh & Co. Kg Process for manufacture of synthetic diamond layers on substrates
US5635254A (en) * 1993-01-12 1997-06-03 Martin Marietta Energy Systems, Inc. Plasma spraying method for forming diamond and diamond-like coatings
US9132404B2 (en) 2005-04-19 2015-09-15 SDCmaterials, Inc. Gas delivery system with constant overpressure relative to ambient to system with varying vacuum suction
US9599405B2 (en) 2005-04-19 2017-03-21 SDCmaterials, Inc. Highly turbulent quench chamber
US9719727B2 (en) 2005-04-19 2017-08-01 SDCmaterials, Inc. Fluid recirculation system for use in vapor phase particle production system
US9023754B2 (en) 2005-04-19 2015-05-05 SDCmaterials, Inc. Nano-skeletal catalyst
US9216398B2 (en) 2005-04-19 2015-12-22 SDCmaterials, Inc. Method and apparatus for making uniform and ultrasmall nanoparticles
US9180423B2 (en) 2005-04-19 2015-11-10 SDCmaterials, Inc. Highly turbulent quench chamber
JP2016027940A (en) * 2007-05-11 2016-02-25 エスディーシーマテリアルズ, インコーポレイテッド Particle production system and fluid recirculation method
US8893651B1 (en) 2007-05-11 2014-11-25 SDCmaterials, Inc. Plasma-arc vaporization chamber with wide bore
JP2010526664A (en) * 2007-05-11 2010-08-05 エスディーシー マテリアルズ インコーポレイテッド Particle production system and fluid recirculation method
US8906316B2 (en) 2007-05-11 2014-12-09 SDCmaterials, Inc. Fluid recirculation system for use in vapor phase particle production system
US9302260B2 (en) 2007-10-15 2016-04-05 SDCmaterials, Inc. Method and system for forming plug and play metal catalysts
US9737878B2 (en) 2007-10-15 2017-08-22 SDCmaterials, Inc. Method and system for forming plug and play metal catalysts
US9597662B2 (en) 2007-10-15 2017-03-21 SDCmaterials, Inc. Method and system for forming plug and play metal compound catalysts
US9089840B2 (en) 2007-10-15 2015-07-28 SDCmaterials, Inc. Method and system for forming plug and play oxide catalysts
US9186663B2 (en) 2007-10-15 2015-11-17 SDCmaterials, Inc. Method and system for forming plug and play metal compound catalysts
US9592492B2 (en) 2007-10-15 2017-03-14 SDCmaterials, Inc. Method and system for forming plug and play oxide catalysts
US9522388B2 (en) 2009-12-15 2016-12-20 SDCmaterials, Inc. Pinning and affixing nano-active material
US9149797B2 (en) 2009-12-15 2015-10-06 SDCmaterials, Inc. Catalyst production method and system
US9126191B2 (en) 2009-12-15 2015-09-08 SDCmaterials, Inc. Advanced catalysts for automotive applications
US8992820B1 (en) 2009-12-15 2015-03-31 SDCmaterials, Inc. Fracture toughness of ceramics
US8865611B2 (en) 2009-12-15 2014-10-21 SDCmaterials, Inc. Method of forming a catalyst with inhibited mobility of nano-active material
US8932514B1 (en) 2009-12-15 2015-01-13 SDCmaterials, Inc. Fracture toughness of glass
US8906498B1 (en) 2009-12-15 2014-12-09 SDCmaterials, Inc. Sandwich of impact resistant material
US9308524B2 (en) 2009-12-15 2016-04-12 SDCmaterials, Inc. Advanced catalysts for automotive applications
US9332636B2 (en) 2009-12-15 2016-05-03 SDCmaterials, Inc. Sandwich of impact resistant material
US8877357B1 (en) 2009-12-15 2014-11-04 SDCmaterials, Inc. Impact resistant material
US8859035B1 (en) 2009-12-15 2014-10-14 SDCmaterials, Inc. Powder treatment for enhanced flowability
US9533289B2 (en) 2009-12-15 2017-01-03 SDCmaterials, Inc. Advanced catalysts for automotive applications
US9216406B2 (en) 2011-02-23 2015-12-22 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PtPd catalysts
US9433938B2 (en) 2011-02-23 2016-09-06 SDCmaterials, Inc. Wet chemical and plasma methods of forming stable PTPD catalysts
US8969237B2 (en) 2011-08-19 2015-03-03 SDCmaterials, Inc. Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
US9498751B2 (en) 2011-08-19 2016-11-22 SDCmaterials, Inc. Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions
US9533299B2 (en) 2012-11-21 2017-01-03 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9511352B2 (en) 2012-11-21 2016-12-06 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9156025B2 (en) 2012-11-21 2015-10-13 SDCmaterials, Inc. Three-way catalytic converter using nanoparticles
US9586179B2 (en) 2013-07-25 2017-03-07 SDCmaterials, Inc. Washcoats and coated substrates for catalytic converters and methods of making and using same
US9566568B2 (en) 2013-10-22 2017-02-14 SDCmaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
US9950316B2 (en) 2013-10-22 2018-04-24 Umicore Ag & Co. Kg Catalyst design for heavy-duty diesel combustion engines
US9427732B2 (en) 2013-10-22 2016-08-30 SDCmaterials, Inc. Catalyst design for heavy-duty diesel combustion engines
US9517448B2 (en) 2013-10-22 2016-12-13 SDCmaterials, Inc. Compositions of lean NOx trap (LNT) systems and methods of making and using same
US9687811B2 (en) 2014-03-21 2017-06-27 SDCmaterials, Inc. Compositions for passive NOx adsorption (PNA) systems and methods of making and using same
US10086356B2 (en) 2014-03-21 2018-10-02 Umicore Ag & Co. Kg Compositions for passive NOx adsorption (PNA) systems and methods of making and using same
US20150274534A1 (en) * 2014-03-31 2015-10-01 Case Western Reserve University Nanoscale diamond particles and method of forming nanoscale diamond particles
US9969620B2 (en) * 2014-03-31 2018-05-15 Case Western Reserve University Nanoscale diamond particles and method of forming nanoscale diamond particles

Also Published As

Publication number Publication date
JP2584805B2 (en) 1997-02-26

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