Nippon Steel Chemical & Material Co., Ltd.

Jeol Ltd.

Asahi Kasei Chemicals Corporation

Nippon Steel & Sumikin Materials Co., Ltd.

Naoki Fujimoto

Hiroto Unno

Masahiro Fukuda

Toru Inaguma

Naoya Sawaki

Tomohiro Uno

Tatsuo Nagata

Izuru Chiyo

Tomoyuki Naganuma

Takeshi Kaneko

Nobuhisa Miyake

Koichi Nose

Masaaki Shinohata

Shinichi Terashima

Keita Kimura

Shuji Nagasaki

Kouji Takeuchi

Kimitaka Hiyama

A high-strength steel foil for the positive and negative electrode current collectors of nickel-hydrogen secondary batteries which uses a light weight and economical steel foil and which is thin and strong and has excellent rust resistance and resistance to metal ion leaching. Also, a high-strength steel foil for the positive and negative electrode current collectors of nickel-hydrogen secondary batteries which has excellent elongation. The Ni-plated steel foil for hydrogen secondary battery current collectors comprises, by mass %, C: 0.0001 to 0.0200%, Si: 0.0001 to 0.0200%, Mn: 0.005 to 0.300%, P: 0.001 to 0.020%, S: 0.0001 to 0.0100%, Al: 0.0005 to 0.1000%, N: 0.0001 to 0.0040%, one or both of Ti and Nb: 0.800% or less respectively, and a balance of Fe and impurities. The Ni-plated steel foil has an Ni plating layer on both surfaces. The thickness of the Ni plating layer on both surfaces of the Ni-plated steel foil is greater than or equal to 0.15 μm, the thickness of the Ni-plated steel foil is 5 to 50 μm, the tensile strength is over 400 MPa but no greater than 1200 MPa, and the surface defect area percentage is less than or equal to 5.00% for both surfaces of the Ni-plated steel foil.

Ni-plated steel foil for nickel-hydrogen secondary battery current collector, nickel-hydrogen secondary battery current collector, and nickel-hydrogen secondary battery

The present invention has as its technical issue to secure not only mechanical strength but also conductivity by increasing the contact area with the positive electrode active substance or positive electrode mixture while also securing corrosion resistance to alkali or an electrolytic solution when applying stainless steel foil to a current collector for a positive electrode of a secondary battery so as to deal with the increasingly higher capacities and smaller sizes and lighter weights of lithium ion secondary batteries and has as its object the provision of a current collector for a positive electrode of a secondary battery using such stainless steel foil. The invention is a current collector comprised of stainless steel foil made to decrease in surface hardness while obtaining corrosion resistance by giving it a chemical composition decreased in Cr and containing a trace amount of Sn or a chemical composition containing Ti, a thickness of 1 μm or more and 20 μm or less, and a surface hardness of a Vickers hardness of Hv300 or less applied to a secondary battery positive electrode. When measuring an electrical contact resistance between the positive electrode active substance and the current collector after pressing, when the filling ratio of the positive electrode mixture is 74%, the electrical contact resistance is 100Ω or less. In particular, that effect is exhibited when the density of the positive electrode mixture is 3.0 g/cmor more (filling ratio: 50% or more).

Stainless foil current collector for secondary battery positive electrodes

A metal mask material for OLED use reduced in amount warpage due to etching, a method for manufacturing the same, and a metal mask are provided. The metal mask material and metal mask of the present invention contain, by mass %, Ni: 35.0 to 37.0% and Co: 0.00 to 0.50%, have a balance of Fe and impurities, have thicknesses of 5.00 μm or more and 50.00 μm or less, and have amounts of warpage defined as maximum values in amounts of rise of four corners of a square shaped sample of the metal mask material of 100 mm sides when etching the sample from one surface until the thickness of the sample becomes ⅖ and placing the etched sample on a surface plate of 5.0 mm or less.

Metal mask material, method for manufacturing same, and metal mask

Provided is a sample loading method of loading a cooled sample into a sample exchange chamber of a charged particle beam apparatus includes: attaching the sample container in which a sample and liquid nitrogen are accommodated to the sample exchange chamber via a gate valve; evacuating a space between a liquid surface of the liquid nitrogen and the gate valve in a state in which the gate valve is closed; discharging the liquid nitrogen in the sample container after the space between the liquid surface of the liquid nitrogen and the gate valve has been evacuated; evacuating a space in the sample container after the liquid nitrogen in the sample container has been discharged; and opening the gate valve after the space in the sample container has been evacuated.

Sample loading method and charged particle beam apparatus

A charged particle beam apparatus includes: a specimen chamber; a specimen holder that is disposed in the specimen chamber; a specimen exchange chamber that is connected to the specimen chamber; a transporting mechanism that transports a specimen between the specimen chamber and the specimen exchange chamber; a first temperature sensor that measures a temperature of the specimen holder; a second temperature sensor that measures a temperature of the transporting mechanism; and a control unit. The control unit: calculates a temperature difference between the specimen holder and the transporting mechanism based on the temperature of the specimen holder and the temperature of the transporting mechanism when the control unit has received an instruction to transport a specimen; determining whether the temperature difference is a threshold or more; and stopping transportation of a specimen when the control unit has determined that the temperature difference is the threshold or more.

Charged particle beam apparatus

There is provided a charged particle beam system capable of determining the type of each cartridge precisely. An electron microscope that embodies the charged particle beam system includes a discriminator for determining the type of each cartridge based on the range or distance measured by a laser range finder. Plural cartridges are received in a magazine. The laser range finder measures the range to a selected one of the plural cartridges which is placed in a measurement position. A first cartridge of a first type included in the plural cartridges has a first measurement surface at a first distance to the laser range finder when placed in the measurement position. A second cartridge of a second type has a second measurement surface at a second range to the laser range finder when placed in the measurement position.

Charged particle beam system

A sample exchange device includes a first transport mechanism that includes a grip portion that grips a sample holding member and transports a sample holding member to a sample exchange chamber, a cooling unit that cools the sample exchange chamber, fiber sensors that detect whether or not the grip portion of the first transport mechanism grips the sample holding member in the sample exchange chamber, and a control unit. The control unit turns on the fiber sensors when the grip portion of the first transport mechanism enters the sample exchange chamber and turns off the fiber sensors after it is detected whether or not the grip portion of the first transport mechanism grips the sample holding member.

Sample exchange device and charged particle beam device

The present invention has as its object to provide thickness 60 &#x3bc;m or less ultra-thin stainless steel foil which secures high thickness precision and simultaneously secures plastic deformability and good elongation at break, that is, secures good press-formability (deep drawability). The present invention solves this problem by ultra-thin stainless steel foil which has three or more crystal grains in a thickness direction, has a recrystallization rate of 90% to 100%, and has a nitrogen concentration of a surface layer of 1.0 mass % or less. For this reason, there is provided a method of production of stainless steel foil comprising rolling stainless steel sheet, then performing final annealing and making a thickness 5 &#x3bc;m to 60 &#x3bc;m, wherein a rolling reduction ratio at rolling right before final annealing is 30% or more, a temperature of final annealing after rolling is 950&#xb0; C. to 1050&#xb0; C. in the case of austenitic stainless steel and 850&#xb0; C. to 950&#xb0; C. in the case of ferritic stainless steel, and a nitrogen content in atmospheric gas in final annealing is 0.1 vol % or less, whereby ultra-thin stainless steel foil can be produced.

Stainless steel foil and method of production of same

The present invention provides a ferritic stainless steel foil high in stretch-expand formability and further small in anisotropy of deformation with respect to stretch-expand forming even with ultrathin steel foil with a thickness of 60 &#x3bc;m or less. The ferritic stainless steel foil has a thickness of 5 &#x3bc;m to 60 &#x3bc;m, wherein a recrystallization rate of the stainless steel foil is 90% to 100%, and in an orientation distribution function obtained by analysis of a crystalline texture of the stainless steel foil, when a Euler angle &#x3c6;2 is 45&#xb0;&#xb1;10&#xb0;, at a plane expressed by a Euler angle &#x3a6; of 53.4&#xb0;&#xb1;10&#xb0;, a maximum peak strength ratio in peak strength ratios shown by orientations corresponding to a Euler angle &#x3c6;1 is 25 or less, where the Euler angle &#x3c6;1 is 0 to 90&#xb0;. The ferritic stainless steel foil may be laminated with a resin film and is useful for producing a battery case.

Ferritic stainless steel foil

The present invention provide a ferritic stainless steel foil having a high thickness precision even with a thickness 60 &#x3bc;m or less ultrathin stainless steel foil and simultaneously having a plastic deformation ability and good elongation at break, that is, having a good press-formability (deep drawing ability). The present invention is a stainless steel foil having a thickness of 5 &#x3bc;m to 60 &#x3bc;m, wherein a recrystallization ratio of said stainless steel foil is 90% to 100%, a surface layer of said stainless steel foil has a nitrogen concentration of 1.0 mass % or less, three or more crystal grains are contained in the thickness direction of said stainless steel foil, an average crystal grain diameter 'd' of said crystal grains is 1 &#x3bc;m to 10 &#x3bc;m, and, when said thickness is 't' (&#x3bc;m), an area ratio of crystal grains having a crystal grain diameter of t/3 (&#x3bc;m) or more is 20% or less.

Stainless steel foil

Provided is an austenitic stainless steel foil that demonstrates a high degree of stretch formability and little deformation anisotropy with respect to stretch forming despite having a sheet thickness of 60 &#x3bc;m or less. The austenitic stainless steel foil of the present invention has a sheet thickness of 5 &#x3bc;m to 60 &#x3bc;m, a recrystallization rate of 90% to 100%, and a texture in which the total of the area ratio of a crystal orientation in which the difference in orientation from the {112}&#x3c;111&#x3e; orientation is within 10&#xb0;, the area ratio of a crystal orientation in which the difference in orientation from the {110}&#x3c;112&#x3e; orientation is within 10&#xb0;, and the area ratio of a crystal orientation in which the difference in orientation from the {110}&#x3c;001&#x3e; orientation is within 10&#xb0;, in a measuring field thereof, is 20% or less.

Austenitic stainless steel foil

A method for producing an isocyanate, comprising: a carbamation step of generating an N-substituted carbamate from an organic primary amine, urea and an organic hydroxy compound according to a carbamation reaction, and then recovering a first gaseous phase component containing the urea and/or a compound having a carbonyl group derived from the urea, the organic hydroxy compound, and ammonia; a condensation step of condensing the first gaseous phase component with a condenser; an isocyanate production step of producing an isocyanate by subjecting the N-substituted carbamate to pyrolysis; an ammonia absorption step of allowing a second gaseous phase component containing ammonia recovered as a gaseous phase component from the condenser as a main component, to be absorbed by absorption water, and generating gas-absorbed water; and an ammonia stripping step of heating the gas-absorbed water to separate ammonia from the gas-absorbed water.

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Tokyo, Japan

Naoki Fujimoto