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41 results about "Atmospheric exposure" patented technology

Sb-Te Alloy Powder for Sintering, Sintered Compact Sputtering Target Obtained by Sintering said Powder, and Manufacturing Method of Sb-Te Alloy Powder for Sintering

Provided is Sb—Te alloy powder for sintering in which the maximum grain size of the powder obtained by subjecting gas atomized powder of an Sb—Te alloy to mechanical pulverization is 90μm or less, and a sintered compact sputtering target obtained by sintering this powder. Further provided is a manufacturing method of Sb—Te alloy powder for a sintered compact sputtering target including the steps of dissolving an Sb—Te alloy, thereafter subjecting this to gas atomization to obtain atomized powder, and further subjecting this to mechanical pulverization in an inert atmosphere without any atmospheric exposure so as to manufacture powder having a maximum grain size of 90 μm or less and reduced oxygen content. Thus, the Sb—Te alloy sputtering target structure can be uniformalized and refined, generation of cracks in the sintered target can be inhibited, and generation of arcing during sputtering can be inhibited. Further, surface ruggedness caused by sputter erosion can be reduced in order to obtain a high quality Sb—Te alloy sputtering target.
Owner:JX NIPPON MINING& METALS CORP

Test method for simulating corrosion process of aluminum and aluminum alloy in industrially polluted atmospheric environment

InactiveCN102128781ARapid evaluation of atmospheric corrosion resistanceHigh magnificationWeather/light/corrosion resistanceTested timeTest material
The invention relates to aluminum and aluminum alloy atmospheric corrosion simulation technique, in particular to a test method for simulating the corrosion process of aluminum and aluminum alloy in an industrially polluted atmospheric environment. In the method, aluminum or aluminum alloy is used as a tested material; aqueous solution containing NaHSO3 at a concentration of 0.02mol / L and NaCl at a concentration of 0 to 0.006mol / L is used as corrosive liquid; and soaking, drying and wetting are carried out in turn and are circulated every 10 to 20 minutes, wherein soaking is performed at 45 to 50 DEG C for 1 to 2 minutes, drying is performed at 50 to 60 DEG C for 8 to 15 minutes, wetting is performed at 40 to 50 DEG C for 1 to 3 minutes, and the test time is 48 to 240 hours. The method has simulating performance, accelerating performance and repeatability, can be used in study on the corrosion behaviors of the aluminum and aluminum alloy in the industrially polluted atmospheric environment to evaluate and predict the atmospheric corrosion of the aluminum and aluminum alloy quickly, and can solve the problems of long test period, high cost, difficult environmental factor control and the like of the conventional atmospheric exposure test.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Pressure-controlled wafer carrier and wafer transport system

Disclosed are a wafer carrier that keeps wafers under a constant pressure, at any preset value below or above the atmospheric pressure, to prevent wafer contaminations arising from atmospheric exposure in conventional wafer carriers, and also, a wafer transport system and method utilizing the same wafer carrier. The wafer carrier charged with a preset carrier pressure is transported and docked with an airlock of a wafer processing tool comprising the airlock, a vacuum transfer module, and a process chamber. The airlock adjusts, by a gas pump, inner pressure to equate successively with, first, the carrier pressure before opening the carrier door, and next, the vacuum transfer module pressure before opening the latter's door. The wafers are then transferred into the process chamber. After processing, the wafers are transferred back into the wafer carrier and charged with the preset carrier pressure before undocked and transported to the next wafer processing tool.
Owner:TAIWAN SEMICON MFG CO LTD

Replacement device and replacement method of excimer laser window

The invention relates to a replacement device and replacement method of an excimer laser window. The device comprises a replacement main cavity with an opening at one end. A cavity wall of the replacement main cavity is provided with multiple observation windows for observing the internal part of the replacement main cavity, a barometer for detecting the internal air pressure in the replacement main cavity, a vacuuming passage, an inflation passage, a plurality of finger sleeve holes and a window chamber. Both the vacuuming passage and the inflation passage communicate with the internal part of the replacement main cavity, and the finger sleeve holes are equipped with operation finger sleeves which facilitate the window replacement in the replacement main cavity. According to the replacement device and the replacement method, a diffusion phenomenon of a halogen medium in the process of replacing an excimer laser window can be significantly reduced, the contamination of parts in atmospheric exposure can be effectively avoided, the number of times of cleaning a discharge chamber and the harm to an operator can be effectively reduced, the passivation process is avoided or the passivation time is significantly reduced, and the use efficiency of a laser and the utilization rate of energy sources are improved.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

Corrosion coupon clamp for atmospheric exposure environment test

The invention provides an atmospheric exposure environment test corrosion coupon clamp and belongs to the technical field of natural environment test devices. The clamp structurally comprises a base,an upright post on the base, a connecting part and a top cover, wherein the base is insulated from the upright post, the upright post is cylindrical and is positioned in the center of an upper surfaceof the base, the top cover is insulated, the bottom of the top cover is hollow corresponding to the upright post, a screw rod is fixedly connected in the base, extends out of the center of a lower surface of the base, and is matched with a nut to be fixed on an exposure rack sample fixing batten, the base and the top cover are connected through an elastic contraction part or are in threaded connection through an outer extension end of the screw rod in the base in the other direction, and protrusions with uniform sizes are distributed on a contact surface of the base and the top cover in a staggered mode. The clamp is advantaged in that the clamp is simple in structure, convenient to operate and capable of stably clamping corrosion hanging pieces with different thicknesses, meanwhile, thedesign of the convex points effectively reduces the contact area of the clamp and the corrosion hanging piece and avoids crevice corrosion.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Rapid evaluation method for stress corrosion sensitivity of low-alloy structural steel in atmospheric environment

The invention discloses a rapid evaluation method for stress corrosion of low-alloy structural steel in an atmospheric environment. The rapid evaluation method is a stress corrosion sensitivity evaluation method constructed based on electrochemical tests and based on atmospheric environment stress corrosion indoor and outdoor simulation and acceleration research data and a stress corrosion electrochemical mechanism thereof. Compared with a traditional outdoor atmospheric exposure test method, the rapid evaluation method has high operability in indoor tests and short test time, the evaluation of stress corrosion performance of the low-alloy steel can be realized, and the rapid evaluation method can be further used for the research and development, production and relevant evaluation and testing in the material selection process of the low-alloy structural steel. The rapid evaluation method has the characteristics of simulation, acceleration and effectiveness, a new method is provided forthe evaluation study of the stress corrosion sensitivity of the low-alloy structural steel in the atmospheric environment, and thus an advantageous basis is provided for the use and protection of materials.
Owner:NANJING IRON & STEEL CO LTD

Experimental method for corrosion resistance of steel bar used in concrete structure in tropical marine atmospheric environment

ActiveCN109557017AReflect corrosionTruly reflect the corrosion situationWeather/light/corrosion resistancePreparing sample for investigationSurface oceanReinforced concrete
The invention provides an experimental method for corrosion resistance of a steel bar used in a concrete structure in a tropical marine atmospheric environment. The method comprises the following steps of: counting and analyzing climatic and environmental conditions and changing laws of coastal areas of Thailand, establishing a load spectrum of environmental corrosion parameters; formulating various concrete proportions and concrete thickness, designing different experimental schemes, preferably setting a concrete proportion and determining the concrete thickness according to the load spectrumof the environmental corrosion parameters, and designing a mold according to the size of a steel bar sample and the concrete thickness; fixing the steel bar sample inside the mold, pouring the concrete slurry into the mold, and removing the mold after the slurry is solidified to obtain a reinforced concrete sample; and fixing the reinforced concrete sample to a sample holder for outdoor atmospheric exposure test, and evaluating the corrosion resistance of the steel bar sample by analyzing corrosion kinetics and macroscopic morphology of the steel bar sample in different sampling periods. According to the experimental method for the corrosion resistance of the steel bar used in the concrete structure in the tropical marine atmospheric environment, the corrosion resistance of the steel barcan be evaluated in a short period of time, the steel bar with good corrosion resistance are preferred.
Owner:UNIV OF SCI & TECH BEIJING
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