3results about How to "Improved creep properties" patented technology

The invention provides a test device and method for evaluating chlorine resistance of a material. The test device comprises a water treatment unit; a chlorine dioxide generating unit; the storage tank is used for mixing the purified water and the chlorine dioxide therein to form a test solution; the test system comprises a water tank and a test unit, the test unit comprises at least one sample rack and a test device, the sample rack is used for fixing a test sample, and the test device is used for monitoring the performance of the test sample; the circulating system comprises a circulating pipeline and a circulating pump, the circulating pipeline is used for communicating the storage tank with the water tank to form a circulating path, and the circulating pump is used for enabling the test solution to circularly flow in the circulating path; and the wastewater treatment unit is communicated with the circulating pipeline and is used for reducing the test solution separated from the circulating pipeline and discharging the test solution out of the device. The test device is provided with the circulating system, so that various parameters of the test solution can be kept stable, and meanwhile, the operability, the safety and the environmental protection are obviously improved.

The invention relates to a high-entropy alloy with excellent creep property and a preparation method thereof. The alloy is expressed as FeaCobCrcNidTapAlqMn by atomic mole percentage, and 10 < = a < = 20, 20 < = b < = 25, 10 < = c < = 20, 25 < = d < = 35, 5 < = p < = 10, 0 < = q < = 8, and 0 < = n < = 5. The preparation method comprises the steps that all the raw materials are taken according to the designed components, then smelting is conducted under the protective atmosphere, and after solid solution water quenching treatment, hot rolling treatment and secondary solid solution treatment are conducted, heat preservation is conducted at the temperature of 750-950 DEG C, and then quenching is conducted. The product is obtained by reasonably regulating and controlling components and performing thermal deformation and thermal treatment processes. Under the high-temperature creep condition of 750 DEG C / 350 MPa, the service life of the obtained product reaches up to 1245 h and is far longer than that of similar products, the room-temperature tensile strength is larger than 1.5 GPa, the bottleneck that a Laves type eutectic high-entropy alloy does not have room-temperature tensile plasticity is broken through, and wide engineering application prospects are achieved.

This invention relates to the field of composite coating technology, specifically to a composite coating for an aluminum-silicon wire submerged roll, its preparation method, and its application. The method involves sequentially depositing CoCrW, CoCrW-Ca2SiO4, Ca2SiO4, and Si-SiC, or sequentially depositing Ca2SiO4 and Si-SiC, on the surface of the submerged roll using atmospheric plasma spraying (APS). Subsequent machining then yields a four-layer CoCrW / CoCrW-Ca2SiO4 / Ca2SiO4 / Si-SiC composite coating or a two-layer Ca2SiO4 / Si-SiC composite coating (hereinafter referred to as the composite coating) with a specified surface roughness. The composite coating prepared by the method described in this invention can withstand temperatures up to 900℃ and possesses excellent wear resistance and aluminum-silicon corrosion resistance, significantly improving the lifespan of the submerged roll.