摘要:
Disclosed are aluminum alloy hollow materials and processes for producing the same wherein an aluminum alloy hollow material is produced by subjecting an ingot of an aluminum alloy containing 0.3˜1.5 wt % Mn to port hole extrusion or port hole extrusion and drawing-elongation processing and wherein a difference in electric conductivity between individual portions in lengthwise direction of the hollow material is not more than 1.0 IACS %. According to the aluminum alloy hollow materials, preferential corrosion in welding potions in port hole extrusion can be prevented.
摘要:
Disclosed are aluminum alloy hollow materials and processes for producing the same wherein an aluminum alloy hollow material is produced by subjecting an ingot of an aluminum alloy containing 0.3˜1.5 wt % Mn to port hole extrusion or port hole extrusion and drawing-elongation processing and wherein a difference in electric conductivity between individual portions in lengthwise direction of the hollow material is not more than 1.0 IACS %. According to the aluminum alloy hollow materials, preferential corrosion in welding potions in port hole extrusion can be prevented.
摘要:
An extruded material of a free-cutting aluminum alloy excellent in embrittlement resistance at a high temperature, containing from 3 to 6% by mass of Cu and from 0.9 to 3% by mass of Bi with the balance being Aluminum and inevitable impurities, wherein a temperature for reducing the Charpy impact test value to half of the value at room temperature is 180° C. or more.
摘要:
Aspects of the invention can provide a semiconductor device including a transistor having a gate shape, which enables a source area and a body contact area to be connected without using wiring and with no gate part protruding to the source area side, and a semiconductor memory. The semiconductor device can have field regions, a transistor which includes a gate (L type gate), a gate insulating film directly below the gate, a body area directly below the gate insulating film, and a source area and a drain area formed on both sides which hold the body area in between. The gate can consist essentially of a first part extending along a channel width direction on the field region and a second part protruding from one end of the first part in the channel width direction to the drain side, and being formed in the L type gate in a plan view. A body contact area can be provided on the field region on the opposite side to the first part with the second part of the L type gate in between, and a low resistant layer is formed on a surface between the source area and the body contact area.
摘要:
A gas sensor has a structure in which an insulator is disposed inside a metallic shell, and a sensor element is disposed inside the insulator. A cavity is formed in the insulator to surround the sensor element. A sealing material mainly formed of glass is charged into the cavity in order to establish sealing between the inner surface of the insulator and the outer surface of the sensor element. The sensor element has a rectangular cross section, and the inner surface of the insulator defining the cavity has a sectional profile corresponding to the sectional profile of the sensor element.
摘要:
Aspects of the invention can provide a semiconductor device and a semiconductor memory using the semiconductor device having a gate shape by which the width of the gate can be realized as designed even if relative shifts occur between the masks for forming the field regions and the gate patterns. The semiconductor device can include, in field regions, a gate (an H-type gate), a gate insulating film right under the gate, a body region right under the gate insulating film, and source/drain regions formed on both sides of and across the body region. The H-type gate can have a first section extending along the channel width direction on the field region, and a pair of second sections formed on both ends of the first section in the channel width direction and extending along the channel length direction, and is formed to be an H shape in plan view. Since a part of each of the pair of second sections of the H-type gate can be formed on a part of the field region having a constant length in the channel length direction, the channel width can be defined by the length of the first section.
摘要:
A process for efficiently preparing fine zeolite particles comprising synthesizing zeolite in the presence of an alkaline earth metal-containing compound and/or with controlling the preparation process of zeolite, thereby giving fine zeolite particles being composed of crystalline aluminosilicate, the fine zeolite particles having a fine average primary particle size, being excellent in the cationic exchange properties and the oil-absorbing ability, having a fine average aggregate particle size, and being excellent in the dispersibility; fine zeolite particles obtainable by the above process; and a detergent composition comprising the fine zeolite particles, the detergent composition being excellent in the detergency.
摘要:
Oxygen sensor element (ZrO.sub.2 solid electrolyte etc) for detecting oxygen concentration in an exhaust gas has a protective layer which is made of a heat-resistant metal oxide and which carries a component of a IIa subgroup element (Ca, Mg etc) on the side exposed to the exhaust gas of the sensor element, at least a part of the protective layer being present as a nonstoichiometric compound (Ti oxide etc) with respect to the heat-resistant metal oxide. Si-poisoning is prevented. Heater for heating the sensor element is provided for preventing Si-poisoning at low temperatures.
摘要:
In an electroluminescence element including light emitting layers emitting light by applying AC voltages thereto the light emitting layer consists of a light emitting layer emitting red light and a light emitting layer emitting bluish green light and a blue filter transmitting blue light and a green filter transmitting green light are disposed on the light emitting surface side of the bluish green light emitting layer. In this way it is possible to take out red, blue and green lights at an approximately equal brightness level and to realize full color.
摘要:
A nonvolatile semiconductor memory device including: a first capacitor, one end of the first capacitor being connected to a floating node; a detection transistor, a gate electrode of the detection transistor being connected to the floating node; a second capacitor, one end of the second capacitor being connected to the floating node, and the other end of the second capacitor being connected to a drain of the detection transistor; and an auxiliary capacitor, one end of the auxiliary capacitor being connected to the floating node, wherein, at least during write operation, a control gate voltage is supplied to the other end of the first capacitor, a control drain voltage is supplied to the other end of the second capacitor, and a capacitance ratio correction voltage which is higher than a voltage of the floating node is supplied to the other end of the auxiliary capacitor.