35results about How to "Reduce sample preparation costs" patented technology

The invention discloses a malachite chemiluminescence ELISA detection method and a kit. According to the invention, it is the first time to discuss chemiluminescence ELISA mechanism of malachite, a malachitechemiluminescence ELISA detection system and a detection method are successively established, and perfect combination of high sensitivity and high specificity is realized. The kit provided by the invention has high sensitivity, accuracy, precision and stability, is used to simplify operation steps and reaction time and reduce errors caused by complex operation, is very suitable for trace analysis and batch detection of malachite residues, and is of great practical application significance.

The invention relates to a preparation method of Cr-Mo steel EBSD samples, which particularly includes the following steps: (a) grinding one surface of a Cr-Mo steel EBSD sample by abrasive paper and grinding a to-be-test surface through silicon carbide waterproof abrasive papers being 280#, 400#, 800#, 1000# and 1500# in meshes; (b) polishing the to-be-test surface with diamond polishing fluids and aluminum oxide polishing fluids in different granularities; (c) reducing the thickness of the mechanically-polished sample to 3 mm through a wire cutting machine; (d) cleaning the sample to remove oil dirt from the sample; (e) continuously polishing the to-be-test surface of the sample with a polishing fluid being 50 nm in granularity for 1-4 min; and (f) cleaning the polished sample in anhydrous ethanol and air-drying the sample to obtain the sample for EBSD analysis. The preparation method is simple, wherein the sample just needs to mechanically polish without any special electrolytic polishing device, so that the method is low in sample making cost and the sample satisfies the requirement in the EBSD analysis.

The invention discloses a preparation method of a nickel steel-containing sample for an EBSD analysis. The method comprises the following steps: rough machining of the nickel steel-containing sample, fine polishing after polishing and erosion, surface cleaning after fine polishing of the sample, and the sample for the EBSD analysis is obtained; the fine polishing process comprises the following steps: diamond suspension liquid is used for polishing the sample after polishing and erosion, and aluminum oxide suspension liquid is used for polishing the sample. Special sample preparation links are reduced for facilitating implementation; the fine polishing process can relieve stress; compared with the conventional polishing method, the method has the advantages of simplicity, saved time, reduced sample preparation cost, and improved sample preparation efficiency, and the sample has a high desorption rate which can meet the requirements of EBSD analysis. The method has high operability, so that sample preparation is simple and timesaving, and preparation efficiency of the sample is improved. The sample for the EBSD analysis has a high desorption rate and good stability, the calibrate rate of the sample reaches 90% or above, general demands are satisfied, and the effects are good.

The invention provides a positive electrode lithium supplementing method of a lithium ion battery, a product of the positive electrode lithium supplementing method and an application of the product. The positive electrode lithium supplementing method comprises the steps that a positive electrode active substance, auxiliary materials and a positive electrode lithium supplementing agent are mixed through a dry method, a mixed powder is obtained, then a lithium supplementing positive electrode pole piece is prepared, and the positive electrode lithium supplementing agent comprises Li3N. Accordingto the method, an operation process is simplified, and consumption of a side reaction between Li3N in the positive electrode lithium supplementing agent and a solvent is avoided by dry mixing so thata lithium supplementing effect is improved, the lithium supplementing positive plate with correspondingly improved porosity is obtained, and a first effect, the energy density, the cycle performanceand the rate capability of a battery cell are improved; and after lithium supplementation, byproduct nitrogen of the positive electrode lithium supplementation agent Li3N is removed by negative pressure in a formation stage so that the structure and the performance of the battery are not influenced. The positive electrode lithium supplementing method has the characteristics of low cost, simplicityand convenience in operation and a good lithium supplementing effect.

The invention provides an EBSD sample making method. The method includes: sample making, wherein a preset-size test is made from sample raw-material, and a to-be-tested surface of the test sample is polished; and heat processing, wherein the test sample after sample making completion is placed in vacuum airtight equipment capable of temperature control, heat processing is carried out according topreset technology, and the sample is used for an EBSD test after heat processing completion. Through the method, a sample making process and time can be shortened, sample making costs can be reduced,sample making efficiency can be improved, calibration rates of IPF graphs in EBSD tests can be significantly improved at the same time, and a highest calibration rate can reach 99%.

The invention discloses a thin plate metallographical thermal embedding method. Resin embedding materials are processed into thermocured resin flakes and resin blocks, and gaps are machined in the thermocured resin flakes and resin blocks. When there is one thin plate sample, the thin plate sample is fixed by the thermocured resin blocks with the gaps, and put into a thermal embedding machine as awhole, and the resin embedding materials are added for embedding; when there are many thin plate samples, every two adjacent thin plate samples are separated through the thermocured resin blocks withthe gaps, the two ends of each thin plate sample are clamped and fixed through the thermocured resin blocks with the gaps, the thin plate samples are put into the thermal embedding machine as a whole, and the resin embedding materials are added for embedding. According to the method, the sample preparation cost is low, the thickness of the thin plates is not required, and the thin plate embeddingefficiency can be improved; moreover, the capillary phenomenon cannot occur, and the metallographical shooting success rate is increased.

The present invention discloses a preparation method of plan-view TEM sample used in an integrated circuit analysis. The method comprises the steps of: providing a carrying slice, and fixing a chip containing a targeted structure sample and the carrying slice on a sample holder in a horizontal direction, and putting them in a process chamber of a FIB apparatus; cutting off a piece of chip structure containing a target structure sample by adopting a FIB; and welding the piece of chip structure on the flat and clean side of the carrying slice by using a nano-manipulator; after being taken out from the process chamber of the FIB apparatus, the carrying slice welded with the chip structure is adjusted to vertical direction, and is put in the process chamber of the FIB apparatus again; transferring and welding the chip structure on the TEM copper grid by using the nano-manipulator; and removing one layer or multiple layers above the preset target layer from the surface layer of the chip by using the FIB to obtain the desired plan-view TEM sample.

The invention provides a method for analyzing the content of main elements in a nickel cobalt lithium manganate positive electrode material. The analyzing method comprises the following steps: (1) carrying out tabletting treatment on a standard sample, then testing the tableted sample by adopting an X-ray fluorescence spectrometer, selecting a model calibration curve spectrogram, preprocessing the curve spectrogram, and establishing a corresponding standard curve; and (2) carrying out tabletting treatment on a to-be-detected sample, then testing the tableted sample by adopting the X-ray fluorescence spectrometer, and obtaining the content of the main elements in the to-be-detected sample according to the corresponding standard curve in the step (1). According to the method, the X-ray fluorescence spectrophotometer is adopted to analyze multiple elements such as Ni, Co and Mn in NCM at a time, and the method is easy to operate, high in analysis speed, safe, rapid, low in cost, high in accuracy, good in stability, high in detection efficiency, high in practicability and suitable for actual production.

The invention discloses a sample preparation method for factory inspection of an elastic adhesive. The method comprises the following steps of: extruding an adhesive sample at one end of a rectangularmold groove, and filling the whole mold groove with the adhesive along the same direction by using a metal scraper; pushing out the redundant adhesive along one end of the mold by using a glass rod to form an adhesive layer with a horizontal surface; curing the prepared mold at room temperature for a certain period of time, and performing direct demolding; and cutting a rubber sheet into test sample strips by using a cutting knife with a specified model after performing demolding. The sample preparation method disclosed by the invention is simple and convenient to operate, low in sample preparation cost and high in efficiency; the rubber sheet prepared by the method has few defects such as flat surface, bubbles and flashes; different test sample strips can be prepared by using with different cutters on the basis of the method; the defect positions can be selectively avoided, the quality of the sample strips is greatly improved, a good premise is provided for adhesive performance detection, the accuracy of detection data is improved, batch detection is realized, and the detection efficiency is greatly improved.

The invention provides a preparation method of a granular primary ore polished section, which comprises the following steps: crushing primary ore into granular ore samples with the granularity of -3mm, uniformly mixing the granular ore samples with a binding agent, uniformly stirring the granular ore samples and the binding agent to form polished section grinding blanks through the operation of a mounting press, and performing coarse grinding, medium grinding and fine grinding on the polished section grinding blanks through a sample grinding machine, subjecting the polished section grinding blanks to polishing solution polishing and water polishing, and finally putting the polished section grinding blanks into an ultrasonic cleaner to be cleaned and dried. Combustion and poisonous and harmful gas release are not prone to occurring in the section preparation process, the environment-friendly and safe effects are achieved, meanwhile, the sample preparation time can be greatly shortened, the situation that coarse and fine particles are not evenly distributed is avoided, and the section grinding efficiency and the section polishing quality are improved.

The invention provides a sample preparation method for ToF-SIMS test of a hollow fiber membrane, and belongs to the technical field of ToF-SIMS test. The method comprises the following steps: cuttinga hollow fiber membrane along the axial direction, flattening and pasting the hollow fiber membrane on a glass sheet, and expanding a to-be-tested surface by adopting a paraffin block. According to the method, the problem that the result is not credible due to the fact that the diameter of the hollow fiber membrane is too small, ToFSIMS cannot be effectively focused and the test signal is too pooris solved, the accurate and credible ToFSIMS test of the hollow fiber membrane is successfully achieved, the good test signal is obtained, operation is easy, and the method can be used for hollow fiber membrane surface filter cake layer composition analysis, membrane material composition analysis and the like.

The invention discloses a method for analyzing Cu, As, Pb and Zn elements in boiler smoke by X-ray fluorescence spectroscopy. A direct compression method is used in a sample preparation process, a module group does not need to be specially produced, and adhesive does not need to be added in addition so that a sample for analysis and detection can be obtained. Preparation cost is greatly reduced, and safety during an operation process is improved. After the prepared sample is detected by the detection method of the invention, high accuracy, good stability and high detection efficiency are possessed, and the sample is highly practical, and is worth promoting.

The invention provides a metallographic section sample preparation mold and a method for preparing a metallographic section sample by using the mold. The mold includes: a rigid outer casing, a section glue filling inner casing and a section marking inner casing; the section marking inner casing includes a rigid shell, The elastic inner pad inside the rigid body shell is used to place movable type; the elastic inner pad is provided with a positioning hole, and the inner sleeve of the slice is used to place the sample and then inject resin, and the inner sleeve of the slice mark and the movable type together form a slice mark assembly; preparation The method includes the steps of: sampling, glue filling, placing a slice marking assembly, post-processing and detection; the invention realizes the combination of sample making and marking process, improves sample preparation efficiency and reduces sample preparation cost; uses movable type to mark slices , can flexibly mark the sample production date and sample label, form a unified and standardized experimental sample marking method, avoid confusion between multiple metallographic sections, and permanent marking is conducive to the observation record of the later section and the review of the test results.

The invention discloses equipment and a method for preparing reinforcing sheets in batches, and the equipment comprises a gum dipping tank, a rest stand and a cut-off machine, and is suitable for preparing reinforcing sheets required by a large-K-number carbon fiber multifilament test sample. The method can be used for preparing reinforcing sheets suitable for tensile property samples of large-K-number carbon fiber multifilaments in batches, and meets the requirements of large-K-number carbon fiber multifilament tensile property test work in large-scale industrialization.

The invention relates to a grinding and polishing clamp and equipment for metallographic sample preparation. The clamp comprises a sleeve, wherein a fixing ring is fixed to the sleeve in the circumferential direction, a plurality of grooves are formed in an inner wall of the sleeve, a plurality of universal balls are arranged on an end surface of the fixing ring, a weight block and a telescopic block are further included, and first bosses matched with the grooves are arranged on a side face of the weight block and a side face of a first supporting plate and a side face of a second supporting plate of the telescopic block. The clamp is advantaged in that problems of grinding deviation, multiple grinding and polishing planes and the like easily generated in the manual grinding and polishingprocess are solved, grinding and polishing efficiency is high, and the sample grinding quality is good.