GB931336A - Improvements in or relating to boron phosphide - Google Patents

Improvements in or relating to boron phosphide

Info

Publication number
GB931336A
GB931336A GB3496662A GB3496662A GB931336A GB 931336 A GB931336 A GB 931336A GB 3496662 A GB3496662 A GB 3496662A GB 3496662 A GB3496662 A GB 3496662A GB 931336 A GB931336 A GB 931336A
Authority
GB
United Kingdom
Prior art keywords
boron
metal
phosphide
coating
boron phosphide
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.)
Expired
Application number
GB3496662A
Inventor
Bernard Abraham Gruber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Chemicals Ltd
Monsanto Chemical Co
Original Assignee
Monsanto Chemicals Ltd
Monsanto Chemical Co
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 Monsanto Chemicals Ltd, Monsanto Chemical Co filed Critical Monsanto Chemicals Ltd
Priority to GB3496662A priority Critical patent/GB931336A/en
Publication of GB931336A publication Critical patent/GB931336A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00Phosphorus; Compounds thereof
    • C01B25/06Hydrogen phosphides
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Ceramic Products (AREA)

Abstract

Cubic crystalline boron phosphide is produced by heating together to at least a sintering temperature (a) a metal phosphide or phosphorous alloy and (b) a metal boride, boron alloy or boron carbide. Either or both of the phosphide and boride may be prepared "in situ" from reducible phosphates or borates in conjunction with a reducing agent, e.g. C. Metal phosphides of Al, Mg, Cu, Ti, Cr, Mn, V, Zr, Mo, Ta or Th or ferrophosphorous and metal borides of Al, Mg, Cu, Ti, Zn or V or ferroboron may be used. Reducible borate sources are colemanite, magnesium borate and borax and reducible phosphate sources are calcium phosphate ores, apatite and bone ash. The proportions of boron and phosphorous sources used are variable but in different circumstances equitomic proportions or an eccess of the cheaper material can be used. The introduction of metallic components by the above method and/or by direct addition of metals results in the production of boron phosphide in a molten matrix which consists of one or more metals selected from Ni, Sb, Sn, Pb, Bi and those mentioned above. Alternatively the molten matrix may consist of an inorganic salt, e.g. NaCl, KBr, LiBr, CaCl2, MgCl2, BaCl2, RbCl2, CsCl2 or a mixture thereof and the fluidity of the slag in this case may be increased by the addition of silica sand, Na2, SiO3 or CaSiO3. Preferred embodiments of the process are the preparation of boron phosphide from ferroboron and ferrophosphorous at 2732 DEG -3092 DEG F., from magnesium or aluminium alloys of phosphorous and boron, from crude phosphate and borate ores in a molten NaCl matrix using carbon as the reducing agent and from boron and phosphorous sources in a matrix formed from fused iron one to which a SiO2 slag may or may not have been added. Metal compounds are removed from the crude product by leaching with aqua regia and siliceous material removed by HF or alkali. The crystalline boron phosphide may be shaped by hot pressing, e.g. at 500-20,000 psig and 1000 DEG -6000 DEG F., or cold pressing, may be diffused into metal or ceramic shapes by packing round the shape and heating to 1500 DEG -6000 DEG F., may be applied as a coating of particles by flame spraying, electrophoresis, or from a slurry, or may be slip cast and subsequently fired. In all cases fluxes and bonding agents may be added, e.g. Cr, Fe, Ni, Co, Nb, Ta, Ti, Zr, W, Mo, Hf, Al2O3, ZrO2, HfO2, SiO2, BeO2, TiO2, ThO2, alkali metal borates or phosphates, boron phosphate or sodium silicate. Porosity may be produced by adding naphthalene, cork or asbestos. The shape or coating may be densified and sintered, and may be subsequently subjected to reduction with H2, where metal oxides are present, or oxidation. For slurry coating the boron phosphide is dispersed in water with carboxymethyl cellulose. Examples of applications for the resulting temperature and chemical resistant boron phosphide or composition as an article or coating are:-crucibles, missile nose cones, rocket fuel tanks and pump impellers, jet nozzles, Venturi throats, exhaust deflectors, grinding wheels, shaping tools, turbine blades and nozzles, observation windows for furnaces, nuclear reactors, or space ships, burners, agitators, nuclear reactor shields, semi conductors, strengthened metal wear plates, or radiation meters. Porous material may be used as filters or to provide cooling by passage of liquids. Specification 923,860 also is referred to.ALSO:Cubic crystalline boron phosphide is produced by heating together to at least a sintering temperature (a) a metal phosphide or phosphorus alloy and (b) a metal boride, boron alloy or boron carbide (see Group III). Metal compounds are removed from the crude product by leaching with aqua regia and siliceous material removed by HF or alkali. The crystalline boron phosphide may be shaped by hot pressing e.g. at 500-20,000 p.s.i.g. and 1500-6000 DEG F., may be applied as a coating of particles by flame spraying, electrophoresis, or from a slurry, or may be slip cast and subsequently fired. In all cases fluxes and bonding agents may be added e.g. Cr, Fe, Ni, Co, Nb, Ta, Ti, Zr, W, Mo, Hf, Al2O3, ZrO2, HfO2, SiO2, BeO2, TiO2, ThO2, alkali metal borates or phosphates, boron phosphate or sodium silicate. Porosity may be produced by adding naphthalene, cork or asbestos. The shape or coating may be densified and sintered, and may be subsequently subjected to reduction with H2, where metal oxides are present, or oxidation. For slurry coating the boron phosphide is dispensed in water with carboxymethylcellulose. Examples of applications for the resulting temperature and chemical resistant boron phosphide or composition as an article or coating are:- crucibles, missile nose cones, rocket full tanks and pump impellers, jet nozzles, venturi throats, exhaust deflectors, grinding wheels shaping tools, turbine blades and nozzles, observation windows for furnaces, nuclear reactors, or space ships, burners, agitators, nuclear reactor shields, semi-conductors, strengthened metal wear plates, or radiation meters. Porous material may be used as filters or to provide cooling by passage of liquids. Specification 923,860 also is referred to.
GB3496662A 1959-08-06 1959-08-06 Improvements in or relating to boron phosphide Expired GB931336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3496662A GB931336A (en) 1959-08-06 1959-08-06 Improvements in or relating to boron phosphide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3496662A GB931336A (en) 1959-08-06 1959-08-06 Improvements in or relating to boron phosphide

Publications (1)

Publication Number Publication Date
GB931336A true GB931336A (en) 1963-07-17

Family

ID=10372209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3496662A Expired GB931336A (en) 1959-08-06 1959-08-06 Improvements in or relating to boron phosphide

Country Status (1)

Country Link
GB (1) GB931336A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560659A (en) * 2012-03-21 2012-07-11 新疆紫晶光电技术有限公司 Nonlinear optical crystal and preparation method and application thereof
CN102842648A (en) * 2012-08-12 2012-12-26 安阳市凤凰光伏科技有限公司 Method for carrying out desilvering processing on waste solar cell slice
CN102851506A (en) * 2012-08-12 2013-01-02 安阳市凤凰光伏科技有限公司 Method for extracting and recovering silver from waste solar cell
EP2886515A1 (en) 2013-12-23 2015-06-24 Université Pierre et Marie Curie (Paris 6) Production of boron phosphide by reduction of boron phosphate with an alkaline metal
US10519039B2 (en) 2015-05-20 2019-12-31 Universite Pierre Et Marie Curie (Paris 6) Mechanochemical process for the production of BP, B12P2 and mixtures thereof, in particular as nanopowders
CN110723740A (en) * 2019-10-23 2020-01-24 西安交通大学 Method for preparing high-thermal-conductivity boron phosphide by molten salt growth method
CN111253102A (en) * 2020-02-08 2020-06-09 青岛大学 Outdoor multiple hybrid self-cleaning energy-saving luminescent sand and preparation method thereof
CN111748760A (en) * 2020-06-11 2020-10-09 武汉理工大学 HfO2/HfB2Composite high-infrared-emissivity ceramic coating and preparation method thereof

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102560659A (en) * 2012-03-21 2012-07-11 新疆紫晶光电技术有限公司 Nonlinear optical crystal and preparation method and application thereof
CN102560659B (en) * 2012-03-21 2015-01-07 新疆紫晶光电技术有限公司 Nonlinear optical crystal and preparation method and application thereof
CN102842648A (en) * 2012-08-12 2012-12-26 安阳市凤凰光伏科技有限公司 Method for carrying out desilvering processing on waste solar cell slice
CN102851506A (en) * 2012-08-12 2013-01-02 安阳市凤凰光伏科技有限公司 Method for extracting and recovering silver from waste solar cell
EP2886515A1 (en) 2013-12-23 2015-06-24 Université Pierre et Marie Curie (Paris 6) Production of boron phosphide by reduction of boron phosphate with an alkaline metal
WO2015097244A1 (en) 2013-12-23 2015-07-02 Universite Pierre Et Marie Curie (Paris 6) Production of boron phosphide by reduction of boron phosphate with an alkaline metal
US10106415B2 (en) 2013-12-23 2018-10-23 Sorbonne Universite Production of boron phosphide by reduction of boron phosphate with an alkaline metal
US10519039B2 (en) 2015-05-20 2019-12-31 Universite Pierre Et Marie Curie (Paris 6) Mechanochemical process for the production of BP, B12P2 and mixtures thereof, in particular as nanopowders
CN110723740A (en) * 2019-10-23 2020-01-24 西安交通大学 Method for preparing high-thermal-conductivity boron phosphide by molten salt growth method
CN111253102A (en) * 2020-02-08 2020-06-09 青岛大学 Outdoor multiple hybrid self-cleaning energy-saving luminescent sand and preparation method thereof
CN111253102B (en) * 2020-02-08 2021-09-03 青岛大学 Outdoor multiple hybrid self-cleaning energy-saving luminescent sand and preparation method thereof
CN111748760A (en) * 2020-06-11 2020-10-09 武汉理工大学 HfO2/HfB2Composite high-infrared-emissivity ceramic coating and preparation method thereof

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