公开(公告)号：US20180114615A1

公开(公告)日：2018-04-26

申请号：US15572707

申请日：2016-05-13

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wei ZHANG ,  Yingmin WANG ,  Yanhui LI ,  Dianguo MA

IPC: H01F1/047 ,  C22C1/08 ,  C22C5/04 ,  C22C38/00 ,  C22C38/10 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: H01F1/047 ,  B22F2999/00 ,  B82Y30/00 ,  B82Y40/00 ,  C22C1/08 ,  C22C5/04 ,  C22C38/002 ,  C22C38/10 ,  C22C2202/02 ,  H01F10/123 ,  H01F41/0253 ,  C22C1/05

Abstract: A kind of nano-porous Fe—Pt alloys with strong permanent magnetism and a preparation method therefor. The nano-porous Fe—Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore sizes of 10-50 nm, and ligament thicknesses of 20-80 nm. Under an applied magnetic field of 50 kOe, the coercivity, magnetization intensity and remanence of the alloys are 13.4-18.5 kOe, 40.4-56.3 emu/g and 28.3-37.4 emu/g, respectively. The master alloy ingots are prepared using electric arc melting or induction melting; the alloy ribbons are prepared using the single-roller melt-spinning equipment; the precursors mainly containing nano-composite phases of hard magnetic L10-FePt and soft magnetic Fe2B are obtained directly by the melt-spinning or obtained by conducting vacuum annealing on the melt-spun ribbons; and the nano-porous Fe—Pt alloys with a single L10-FePt phase are obtained by the electrochemical dealloying technique, thereby filling in the technical blank of nano-porous metal materials with permanent magnetism.

公开(公告)号：US20210046298A1

公开(公告)日：2021-02-18

申请号：US16960177

申请日：2019-05-13

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Guojun MA ,  Chengwei WU ,  Xiaolong AN ,  Xiao HAN ,  Wei ZHANG ,  Yongtao LV ,  Jianli MA

IPC: A61M37/00

Abstract: A high aspect ratio in-plane metal microneedle array, a manufacturing method and a clamping and inserting auxiliary device thereof is disclosed. A large-size metal sheet is cut into small metal sheets. A clamping tooling composed of two upper and lower metal cover plates is processed. Inner sides of the upper and the lower cover plates of the tooling are provided with grooves in which the metal sheets are placed and fastened by bolts. Wire cutting is conducted on the tooling and the metal sheets as a whole to obtain a plane metal microneedle array with a plurality of microneedle bodies. In addition, an assembling and clamping device and an inserting auxiliary device of the high aspect ratio in-plane metal microneedle array is provided. The assembled inserting auxiliary device is placed on skin, and the microneedle array is inserted into the skin through the auxiliary device.

公开(公告)号：US20170190589A1

公开(公告)日：2017-07-06

申请号：US15500445

申请日：2015-07-14

Applicant: RESEARCH INSTITUTE OF SHAANXI YANCHANG PETROLEUM (GROUP) CO., LTD. ,  DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Jiuchang HE ,  Wei ZHANG ,  Xiongfu ZHANG ,  Dapeng LI ,  Ruimin GAO ,  Yongbin LU ,  Shuqin ZHANG ,  Mingfeng WANG ,  Pengju HUO ,  Si LI ,  Yuan ZHANG ,  Zhiling LIU ,  Gang CHEN ,  Ting PEI ,  Hua ZHANG

IPC: C01B39/40

CPC classification number: C01B39/40 ,  C01P2004/04 ,  C01P2004/34 ,  C01P2004/38 ,  C01P2004/62

Abstract: A method for directly preparing an empty shell type small grain ZSM-5 molecular sieve. The method comprises: uniformly mixing and stirring an organic template agent, a silicon source and water; dripping an aqueous solution of an aluminum source into the mixture; preserving room temperature, and continuously stirring for a period of time; and performing hydrothermal crystallization, and washing, drying and roasting the obtained product to obtain the Molecular sieve. The molecular sieve has high degree of crystallinity and uniform particle size. Moreover, the method requires short time, simple operation and only one step, no extra surfactant is needed, and secondary acid and alkali treatment is not needed.

公开(公告)号：US20210138215A1

公开(公告)日：2021-05-13

申请号：US16960169

申请日：2019-05-13

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Guojun MA ,  Chengwei WU ,  Yuting NIU ,  Wei ZHANG ,  Yongtao LV ,  Xiao HAN ,  Jianli MA

IPC: A61M37/00 ,  B21G1/00

Abstract: An in-plane metal microneedle array and a manufacturing method therefor is disclosed. A large-size metal sheet is cut into small metal sheets. Inner sides of the upper and the lower cover plates of the tooling are provided with grooves matched with the sizes of the small metal sheets. Through holes are formed at edges around the cover plates. The metal sheets are placed in the grooves and fastened through bolts. The geometry and the size of a sheet microneedle array are designed, and a CAD model of the plane microneedles is built. A wire path is cut according to the CAD model. A few materials are reserved on both sides of substrates of the microneedle array without cutting. The unprocessed parts on both sides of the microneedle substrate are cut to obtain an in-plane metal microneedle array with a plurality of microneedle bodies.

公开(公告)号：US20170233259A1

公开(公告)日：2017-08-17

申请号：US15505490

申请日：2015-07-14

Applicant: RESEARCH INSTITUTE OF SHAANXI YANCHANG PETROLEUM (GROUP) CO., LTD ,  DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wei ZHANG ,  Xiongfu ZHANG ,  Dapeng LI ,  Ruimin GAO ,  Yongbin LU ,  Shuqin ZHANG ,  Mingfeng WANG ,  Pengju HUO ,  Si LI ,  Chengda WANG ,  Weiwu XU ,  Yuan ZHANG ,  Zhiling LIU ,  Ting PEI ,  Hua ZHANG ,  Gang CHEN ,  Haiou LIU

IPC: C01B39/40

CPC classification number: C01B39/40 ,  B01J29/40 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/60 ,  C01P2004/62

Abstract: A rapid synthesis method of a small-crystal-grain ZSM-5 molecular sieve, the method comprising: preparing a mixed silicon-aluminum glue solution, placing the solution in a crystallization kettle for low-temperature nucleation, enabling high-temperature crystallization growth of the solution, and obtaining a crystallization product, namely, a small-crystal-grain ZSM-5 molecular sieve, the nucleation temperature being 60-120° C., nucleation time being 1-3 hours, a crystallization growth temperature being 150-170° C., and crystallization growth time being 1-3 hours. The method is easy to operate, and has a short operation time, thus being able to complete within 6 hours; in addition, the product has uniform grain sizes, is in a mono-dispersed state, and has a high crystallization degree to a submicron degree.

公开(公告)号：US20210254198A1

公开(公告)日：2021-08-19

申请号：US17053293

申请日：2020-05-19

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Wei ZHANG ,  Yanhui LI ,  Leiqiang LAI

IPC: C22C29/14 ,  C22C1/00 ,  C22C45/00 ,  C22C30/00

Abstract: Boron-based amorphous alloys and a preparation method thereof is provided. The composition formula of the alloys is BaCobREcX1dX2eX3f, wherein RE is any one or more of La, Ce, Pr, Nd, Sm, Gd, Dy, Er and Y; X1 is any one or more of C, Si and Al; X2 is any one or two of Fe and Ni; X3 is any one or more of Zr, Nb, Mo, Hf, Ta and W; and a, b, c, d, e and f respectively represent atomic percent of each corresponding element in the formula, where: 45≤a≤55, 25≤b≤40, 10≤c≤20, 0≤d≤10, 45≤a+d≤55, 0≤e≤20, 25≤b+e≤40, 0≤f≤3, 10≤c+f≤20 and a+b+c+d+e+f=100. The preparation method of the boron-based amorphous alloy comprises: preparing master alloy ingots using an arc furnace or an induction melting furnace; and then obtaining amorphous ribbons with different thicknesses by a single copper roller melt-spinning equipment.