摘要:
A method of manufacturing a magnetic recording medium such as for a magnetic disc, in which a magnetic layer comprising a Co-based alloy is formed on a carbon substrate and a heat treatment is applied at a temperature of 250.degree. to 1450.degree. C. to improve the coercive force. Further, the squareness ratio is improved by applying the heat treatment under a magnetic field. Greater coercive force can be obtained by forming a Cr underlayer prior to the formation of the magnetic layer. Increased recording density of the magnetic recording medium can be realized by improving the coercive force and the squareness ratio in this way.
摘要:
Magnetic recording media, wherein a substrate of Al-Mg alloy prepared from aluminum metal at a purity of higher than 99.99% is surface finished by electrolytic abrasive polishing and a thin film layer of ferromagnetic material is formed thereover as a recording layer.The Al-Mg alloy is preferably prepared by rapid-cooling solidification.
摘要:
An object of the present invention is to obtain a magnetic disk which has a high coercive force. It has a constitution in which, at first, a Cr under layer, a magnetic layer of a Co alloy, and a protective layer, a Zr layer for example, are formed in order on a substrate, and it is heat-processed at a temperature of higher than 250.degree. C. The Zr layer is changed to an oxide layer, etc. by the heating process and becomes a layer which functions as a protective layer, and on the other hand, a chemical compound of Zr and a non-magnetic element in the magnetic layer of a Co alloy, Cr for example, is not generated, so that the segregation of Cr into the crystalline grain boundaries of the magnetic layer of a Co alloy is more effectively expedited. Because of this, since magnetic interactions between the crystalline grains in the magnetic layer of a Co alloy are weakened, the disks having high coercive force can be obtained.
摘要:
The surface of a blank for a textured amorphous carbon substrate is polished in a surface with a predetermined surface roughness, and then the blank with a polished surface is heated at a predetermined temperature in an oxidizing atmosphere to form minute irregularities in the polished surface through a reaction expressed by C+O.sub.2 =CO.sub.2 so that the surface is textured in an appropriate surface roughness. A randomly textured amorphous carbon substrate has a randomly textured surface with a surface roughness Ra in the range of 20 to 100 .ANG. and the ratio Ra.sub.2 /Ra.sub.1, where Ra.sub.1 is the surface roughness with respect to a circumferential direction, and Ra.sub.2 is the surface roughness with respect to a radial direction, in the range of 0.75 to 1.25 .ANG.. A concentrically textured amorphous carbon substrate has a concentrically textured surface with a surface roughness Ra in the range of 30 to 100 .ANG. or in the range of 40 to 200 .ANG., and the ratio Ra.sub.2 /Ra.sub.1 of 1.75 or greater.
摘要翻译:在具有预定表面粗糙度的表面上抛光用于织构化非晶碳基底的坯料的表面,然后将具有抛光表面的坯料在氧化气氛中加热到预定温度,以在抛光表面中形成微小的凹凸,通过 由C + O 2 = CO 2表示的反应,使得表面以适当的表面粗糙度纹理化。 无规构造的无定形碳基板具有表面粗糙度Ra在20〜100范围内的无规纹理表面,Ra2 / Ra1的比率Ra1是相对于圆周方向的表面粗糙度,Ra2是表面粗糙度 相对于径向方向,在0.75至1.25的范围内。 同心纹理的非晶碳衬底具有表面粗糙度Ra在30至100安培范围内或40至200安培范围内的同心纹理表面,Ra2 / Ra1的比值为1.75或更高。
摘要:
An apparatus for supplying drinking water comprising a container (1) in which drinking water such as natural water or tap water is accommodated and which is arranged detachably; a water cooler (22) which cools drinking water supplied from the container (1); a sterilizer (5) which is installed in the water cooler (22) and sterilizes drinking water in the water cooler (22); a cold water valve (23) which controls supplying operation and stopping operation for drinking water in the water cooler (22); and a container detector (4) which detects whether or not the container (1) has been detached, wherein, after the container detector (4) has detected a state in which the container (1) has been detached, drives the sterilizer (5) for a predetermined period. This enables bacteria having invaded into the container (1) to be killed in a well-timed way.
摘要:
An automobile power plant includes an engine with a crankshaft mounted transversely in an engine compartment, a differential disposed behind the engine, and a transmission which is transversely mounted between and below the engine and differential so as to place its input, primary output and counter output shafts in parallel with the crankshaft.
摘要:
In an apparatus for purifying raw water to provide purified water, a cylindrical outer electrode (152) surrounds a cylindrical inner electrode (151) in a water tank (102), storing the raw water, with a predetermined gap left therebetween. It is assumed that the raw water contains chlorine ions therein. A water channel (153a and 151a) passes the raw water from the water tank through the predetermined gap to an outlet port (122b) of the water tank. The inner and the outer electrodes are applied with a d.c. voltage therebetween. The d.c. voltage causes the raw water to be treated into the purified water in the predetermined gap by utilization of the chlorine ions.
摘要:
A control device for a variable capacity compressor in an automotive air conditioning system includes a first temperature sensor disposed forward of the evaporator, a second temperature sensor disposed behind the evaporator and a third temperature sensor disposed at the outside of the automobile compartment. The control device compares the air temperatures detected by the sensors with predetermined temperatures, and controls the capacity of the compressor in accordance with the compared results.
摘要:
The invention relates to a refrigeration circuit which includes a second expansion means and a flow self-operated regulating valve, which controls the quantity of refrigerant to an intermediate suction port of compressor depending on a difference of pressure at the side of inlet from at the side of outlet of the expansion capillary.
摘要:
A mineral-water producing apparatus that includes: an electrolytic bath to which raw water, such as city water, is supplied; a mineral eluting material(s) arranged in the electrolytic bath; and electrodes for applying DC voltage with which the water in the electrolytic bath is electrolyzed so that a mineral element(s) is eluted from the mineral eluting material (s), where the mineral water produced in the electrolytic bath is delivered to the outside thereof, characterized in that the apparatus further includes: a pH sensor which detects the pH of the raw water; and a controller which controls the conducting time duration for the electrodes based on the detection signal from the pH sensor. Thus, mineral water having a desired mineral concentration is produced.