摘要:
A surface treatment method of an aluminum extruding die having wear resistance and separation resistance is provided. The surface treatment method of an aluminum extruding die includes a first nitriding treatment step for forming a diffusion hardened layer 6 containing carbon and nitrogen at a surface layer portion of a die main body 5 by heating and retaining the die main body 5 made of tool steel in a nitriding gas atmosphere containing carburizing gas, and a second nitriding treatment step for forming a compound layer 7 substantially not containing carbon on a surface of the diffusion hardened layer 6 by heating and retaining the die main body 5 to which the first nitriding treatment was executed in a nitriding gas atmosphere not containing carburizing gas.
摘要:
There is disclosed a method for manufacturing an SOI wafer comprising: a step of implanting at least one of a hydrogen ion and a rare gas ion into a donor wafer to form an ion implanted layer; a step of bonding an ion implanted surface of the donor wafer to a handle wafer; a step of delaminating the donor wafer at the ion implanted layer to reduce a film thickness of the donor wafer, thereby providing an SOI layer; and a step of etching the SOI layer to reduce a thickness of the SOI layer, wherein the etching step includes: a stage of performing rough etching as wet etching; a stage of measuring a film thickness distribution of the SOI layer after the rough etching; and a stage of performing precise etching as dry etching based on the measured film thickness distribution of the SOI layer. There can be provided A method for manufacturing an SOI wafer having high film thickness uniformity of an SOI layer with excellent productivity.
摘要:
To obtain a semiconductor substrate having a high-quality Ge-based epitaxial film in a large area, a SiGe mixed crystal buffer layer and a Ge epitaxial film is grown on a main surface of a Si substrate 10. Although high-density defects are introduced in the Ge epitaxial film 11 from an interface between the Ge epitaxial film 11 and the Si substrate 10, the Ge epitaxial film is subjected to a heat treatment at a temperature of not less than 700° C. and not more than 900° C. to cause threading dislocations 12 to change into dislocation-loop defects 12′ near the interface between the Ge epitaxial film 11 and the Si substrate. A main surface of at least one of the Ge epitaxial film 11 with an ion implanted layer and a support substrate 20 is then subjected to a plasma treatment or ozone treatment for the purpose of surface cleaning, surface activation, and the like, after which the main surfaces of the Ge epitaxial film 11 and the support substrate 20 are appressed against and bonded to each other with their surfaces being determined as the joint surfaces. An external impact is then applied to the bonding interface, causing the Ge epitaxial film to be delaminated along a hydrogen ion implanted interface 13, thus obtaining a Ge thin film 14. A surface of the Ge thin film 14 is subsequently subjected to a final surface treatment (for example, CMP) to remove the damage caused by the hydrogen ion implantation, thus resulting in a GeOI substrate having the Ge thin film 14 on the surface thereof.
摘要:
A gas diffusing electrode, an electrochemical device, such as fuel cell, employing same and methods of manufacturing same are provided. The gas diffusing electrode at least includes layers made of at least electro-conductive carbon powder or granule and sputtered platinum layers made of platinum laid alternately to form a multilayer structure. The electrochemical device can be down-sized while maintaining a relatively high power generating capacity.
摘要:
To lower a process temperature for an SOQ substrate manufacturing process to reduce the degree of surface roughness of an SOQ film and provide a high-quality SOQ substrate.Hydrogen ions are implanted to a surface of a single crystal Si substrate 10 through an oxide film 11 to uniformly form an ion implanted layer 12 at a predetermined depth (average ion implantation depth L) from the surface of the single crystal Si substrate 10, and a bonding surface of the substrate undergoes a plasma treatment or an ozone treatment. An external shock is applied onto the single crystal Si substrate 10 and quartz substrate 20, which are bonded together, to mechanically delaminate a silicon film 13 from a single crystal silicon bulk 14. In this way, the SOQ film 13 is formed on the quartz substrate 20 through the oxide film 11. To further smooth the SOQ film surface, hydrogen heat treatment is performed at a temperature of 1000° C. or less below a quartz glass transition point. When measuring surface roughness of an SOQ film after performing hydrogen heat treatment on a sample having surface roughness of about 5 nm in terms of RMS average value immediately after delamination, a satisfactory measurement result of 0.3 nm or less in terms of RMS average value was obtained.
摘要:
There is disclosed a method for producing a single crystal silicon solar cell comprising the steps of: implanting hydrogen ions or rare gas ions into a single crystal silicon substrate through an ion implanting surface thereof to form an ion implanted layer in the single crystal silicon substrate; forming a transparent electroconductive film on a surface of a transparent insulator substrate; conducting a surface activating treatment for the ion implanting surface of the single crystal silicon substrate and/or a surface of the transparent electroconductive film on the transparent insulator substrate; bonding the ion implanting surface of the single crystal silicon substrate and the surface of the transparent electroconductive film on the transparent insulator substrate to each other; applying an impact to the ion implanted layer to mechanically delaminate the single crystal silicon substrate thereat to leave a single crystal silicon layer; and forming a p-n junction in the single crystal silicon layer. There can be provided a single crystal silicon solar cell where a light conversion layer is provided as a thin-film for effective utilization of silicon as a starting material of the silicon solar cell, which single crystal silicon solar cell is excellent in conversion characteristics and is less in degradation due to light irradiation, and which single crystal silicon solar cell is provided as a see-through type solar cell that is usable as a natural lighting window material of a house or the like.
摘要:
A nebulizer includes a peak flow meter measuring the respiratory function of a patient and a nebulizer as an inhaler of a liquid medicine. The patient blows in the breath from a peak flow meter blow-in section of the nebulizer into the peak flow meter to measure the respiratory function. Further, the patient inhales the liquid medicine in a liquid medicine bottle inserted into a liquid medicine bottle insert opening from a nebulizer inhale opening. Simultaneously, outer air measurement is performed with a temperature sensor and a humidity sensor of the nebulizer. Such measurement data and inhale recording data are transmitted to a server from an external connection. Thus, a health site of the patient based on the data is opened on a network. The patient can obtain appropriate advice from a doctor, and a liquid medicine supply from a service provider at appropriate timing.
摘要:
A fuel cell having a structure capable of certainly supplying a gas by making effective use of a limited space while ensuring the portability of the fuel cell is provided. The fuel cell includes two generators, a fuel supply portion, and two planar current collectors. Each of the generators has a proton conductor film, and a planar hydrogen side electrode and a planar oxygen side electrode disposed with the proton conductor film held therebetween. The fuel supply portion is adapted to supply a fuel to the hydrogen side electrodes of the generators. The planar current collectors, which are disposed in close-contact with the oxygen side electrodes of the generators, have gas transmission portions such as opening portions allowing the oxygen side electrodes to be opened to atmosphere. Since the oxygen side electrodes are opened to atmosphere, oxygen can be supplied to the generators without lowering a partial pressure of oxygen in air.
摘要:
When a plurality of sets of a document with an image formed on one side thereof is read, the plurality of sets (341, 342, and 343) of the document is stacked and arranged in a document tray (33), in a state with front and back sides of each set mutually reversed. By sequentially reading images of the plurality of sets of the document arranged in the document tray (33) and detecting the front and back sides of the document, switching of each set of the document is detected, in response to detection of switching of the front and back sides of the document.
摘要:
The present invention is an image forming apparatus having no two-sided printing mechanism in which, by setting a front side printed paper sheet in a manual paper feed section, the paper sheet is taken from the manual paper feed section and a back side printing is executed. At this moment, when a paper detecting switch 24 detects presence of a paper sheet on a manual paper feed tray 23 at the end of the front side printing, a message meaning to remove the paper sheet and thereafter to set the front side printed paper sheet is given. Whether the paper sheet is removed or not is detected according to a change-over of the paper detecting switch 24, and the back side printing is executed after the paper sheet is removed and the front side printed paper sheet is set. As a result, erroneous back side printing on an improper paper sheet can be prevented and a two-sided printing can be correctly executed.