Device and method for forming amorphous coating film

A device for forming an amorphous coating film is disclosed in which a flame containing raw-material particles is jetted from a spray gun toward a base material to melt the raw-material particles by the action of the flame, and the raw-material particles and the flame are cooled with a cooling gas before reaching the base material. In the device, a cylindrical structure which separates the flame from the outside air have been disposed in the region for melting the raw-material particles which is part of the passage through which the flame from the spray gun is jetted, and a channel for the cooling gas has been formed so that the channel is integrated with the cylindrical structure. This device has advantages that it is possible to form amorphous coating films of various metals including a metal that has a high melting point and a narrow supercooled-state temperature range and that the device is compact and generates little oxide.

Ni-based amorphous alloy with high ductility, high corrosion resistance and excellent delayed fracture resistance

Provided is a fully-fledged industrial-use material amorphous alloy with a wide range of applications, that solves the issues of delayed fractures and ductility, etc., and that includes: 63 at% or more Ni; 10%-25 at% B, as a semimetal for amorphization; and one or more of Cr, Mo, or Nb for the remainder.

APPARATUS AND METHOD FOR FORMING AMORPHOUS COATING FILM

An apparatus for forming an amorphous coating film by jetting flame containing particles of a flame spray material from a flame spray gun toward a base material, causing the particles to be melted by the flame, and cooling both the particles and the flame with the means of a cooling gas before they reach the base material. The apparatus includes a tubular member provided among the path along which the flame is jetted that it surrounds the flame passing through a melting zone in which the particles are melted. The tubular member has a flow channel for the cooling gas, formed along and integrally to the tubular member. 1. An apparatus for forming an amorphous coating film by jetting flame containing particles of a flame spray material from a flame spray gun toward a base material , causing the particles to be melted by the flame , and cooling both the particles and the flame by means of a cooling gas before they reach the base material ,the apparatus comprising a tubular member provided at a melting zone, in which the particles are melted, among a path along which the flame is jetted by the flame spray gun, so as to shield the flame from an atmospheric air in the melting zone,the tubular member having a flow channel for the cooling gas, formed along and integrally to the tubular member.2. The apparatus for forming an amorphous coating film according to claim 1 , wherein the flow channel is formed such that a cooling gas emerging therefrom flows tubularly around an entire periphery of the flame.3. The apparatus for forming an amorphous coating film according to claim 2 , wherein the tubular member has coaxial two cylindrical pipes whose distal ends are open such thatthe cooling gas flows between the two pipes and ejected from between the distal ends of the two pipes.4. The apparatus for forming an amorphous coating film according to claim 3 , wherein a sectional area of the opening between the distal ends of the two pipes is smaller than that of the opening between ...

Ni-Based Amorphous Alloy With High Ductility, High Corrosion Resistance and Excellent Delayed Fracture Resistance

[Problem] To prepare an amorphous alloy as an authentic industrial-use material with a wide range of applications by solving various problems such as delayed fracture and ductility. 17-. (canceled)8. A Ni-based amorphous alloy having high ductility , high corrosion resistance , and excellent delayed fracture resistance , whereinthe Ni-based amorphous alloy comprises 63 at % or more of Ni, comprises 10 at % or more and 25 at % or less of B, as a semimetal for amorphization, and comprises Mo as remaining element, andoptionally the Ni-based amorphous alloy comprises, in addition the above components, one or more elements selected from Cr and Nb, and/or comprises less than 2 at % each of either W, V, Ta, or Co.9. The Ni-based amorphous alloy according to claim 8 , whereinthe Ni-based amorphous alloy has a high corrosion resistance to hydrochloric acid, sulfuric acid, hydrofluoric acid, phosphoric acid, and caustic soda under a reductive environment, and{'sub': 100-x-y', 'x', 'y, 'has a composition expressed by NiMoBwhere Ni is 66 at % or more, 5 at %≦x≦21 at %, and 10 at %≦y≦25 at %.'}10. The Ni-based amorphous alloy according to claim 8 , whereinthe Ni-based amorphous alloy has a high corrosion resistance to hydrochloric acid, sulfuric acid, hydrofluoric acid, sodium hypochlorite, phosphoric acid, and caustic soda under a reductive environment, and{'sub': 100-x-y-z', 'x', 'y, 'has a composition expressed by NiMoNbBz wherein Ni is 71.5 at % or more, 0.1 at %≦x≦15 at %, 0.1 at %≦y≦10 at %, and 10 at %≦z≦20 at %.'}11. The Ni-based amorphous alloy according to claim 8 , whereinthe Ni-based amorphous alloy has a high corrosion resistance to hydrochloric acid, sulfuric acid, hydrofluoric acid, sodium hypochlorite, phosphoric acid, and caustic soda under a reductive environment, and{'sub': 100-x-y-z', 'x', 'y', 'z, 'has a composition expressed by NiCrMoBwhere Ni is 64 at % or more, 10 at %≦x≦25 at %, 0 at % Подробнее

Separator material for polymer electrolyte fuel cell having excellent corrosion resistance, conductivity and formability, and method for manufacturing same

[Problem] To prepare a metallic separator for PEFCs having excellent corrosion resistance, conductivity, and formability at low cost. [Solution] A thin plate is prepared by an ultraquenching transition control injector with a mixture of a metal powder having corrosion resistance to form a matrix and a powder having conductivity, as a raw material. When the matrix of the thin plate is crystal-structure metal, the plate can be formed at room temperature, and when the matrix is metallic glass, the plate can be formed in a supercooled liquid state. Therefore the plate can be finished into a separator with an intended shape.

THIN PLATE HAVING EXCELLENT CORROSION RESISTANCE, CONDUCTIVITY AND FORMABILITY, AND METHOD FOR MANUFACTURING SAME

[Problem] 1. A thin plate , the thin plate having a conductive material component that exists , without dissolving , in a metal matrix exhibiting corrosion resistance by passivation , except one that is subjected to press forming , whereinthe metal matrix includes an amorphous structure.2. A thin plate , the thin plate having a conductive material component that exists , without dissolving , in a metal matrix exhibiting corrosion resistance by passivation , except one that is subjected to press forming , whereinthe thin plate is produced as a coating that is laminated on a substrate by, injecting metal used for the metal matrix and the conductive material from an injection gun with flame toward the substrate so that the metal and the conductive material are melted, and then cooling with cooling gas before the flame reaches the substrate.3. The thin plate according to claim 1 , wherein the conductive material component is C or B4C.4. A method for manufacturing the thin plate according to claim 1 , the method comprising:Injecting metal powder used for the metal matrix and the conductive material from an injection gun with flame toward a substrate so that the metal and the conductive material are melted, and then cooling with cooling gas before the flame reaches the substrate so as to provide a composite plate with a coating laminated on the substrate.5. The method for manufacturing the thin plate claim 4 , according to claim 4 , wherein the coating is released from the composite plate to provide the thin plate.6. The method for manufacturing the thin plate claim 4 , according to claim 4 , wherein metal having a composition that becomes amorphous by quenching is used as the metal for the metal matrix claim 4 , to make the metal matrix in the coating and the thin plate include an amorphous structure.7. The thin plate according to claim 2 , wherein the conductive material component is C or 13C.8. A method for manufacturing the thin plate according to claim 2 , the method ...

Thin plate having excellent corrosion resistance, conductivity and formability, and method for manufacturing same

[Problem] To prepare a thin plate having excellent corrosion resistance, conductivity, and formability at low cost. [Solution] A thin plate is prepared by an ultraquenching transition control injector with a mixture of a metal powder having corrosion resistance to form a matrix and a powder having conductivity, as a raw material. An obtained thin plate has a conductive material component that exists, without dissolving, in a metal matrix exhibiting corrosion resistance by passivation, thereby having aforementioned characteristics.

Ni-BASED AMORPHOUS ALLOY WITH HIGH DUCTILITY, HIGH CORROSION RESISTANCE AND EXCELLENT DELAYED FRACTURE RESISTANCE

[Problem] To prepare an amorphous alloy as an authentic industrial-use material with a wide range of applications by solving various problems such as delayed fracture and ductility. [Solution] The alloy includes 63 at% or more of Ni and consists only of, as a semimetal for amorphization, other than P. The semimetal may include, for example, 10 to 25 at% of B and one or more of Cr, Mo, and Nb as remaining main elements.

Ni-BASED AMORPHOUS ALLOY WITH HIGH DUCTILITY, HIGH CORROSION RESISTANCE AND EXCELLENT DELAYED FRACTURE RESISTANCE

耐食性、導電性、成形性に優れた固体高分子型燃料電池用セパレータ材料およびその製造方法

【課題】 耐食性、導電性、成形性に優れたPEFC用の金属製セパレータを、低コストで作製する。 【解決手段】 超急冷遷移制御噴射装置で、母相を形成するための耐食性を持つ金属粉末と、導電性を持つ粉末を混合させたものを原料として、薄板を作製する。薄板の母相が結晶構造金属の場合は常温成形が可能であり、金属ガラスの場合は、過冷却液体状態で成形することにより、目的のセパレータ形状に仕上げることが可能となる。 【選択図】 図４