Shandong University

Yanshan University

Dun Liu

Hongtao Zhu

Longhua Xu

Shuiquan Huang

Chuanzhen Huang

Bin Zou

Hanlian Liu

Peng Yao

Zhenyu Shi

Zhen Wang

Yabin Guan

Zhengkai Xu

Meina Qu

Minting Wang

Jun Wang

Xiaolan Bai

Long Tian

Xuefei Liu

Jinrui Li

Xinyao Cui

Yifei Zhang

Weijie Zhang

Zexin Li

Zhuang Chen

Yunpeng Feng

A ceramic tool with integrated temperature sensing and cutting functions and preparation method and application thereof. The ceramic tool comprises a ceramic matrix, a positive thermoelectric layer and a negative thermoelectric layer being provided on two surfaces of the ceramic matrix; the ceramic matrix being formed by sintering a first matrix material, a first binding agent and a first reinforcing phase, and the thermoelectric layer being formed by sintering of a thermoelectric material; the first matrix material comprises one or more of AlO, SiNand CBN; the first binding agent comprises one or more of Mo, Ni, Co, W and Cr; the first reinforcing phase comprises one or more of TiC, WC, SiC, MgO, CrO, TiOand ZrO; the thermoelectric material for the positive thermoelectric layer comprises ZrBand SiC; the thermoelectric material for the negative thermoelectric layer comprises ZrB, SiC, and graphite.

Ceramic tool with integrated temperature sensing and cutting functions, preparation method and application thereof

An alumina-based ceramic tool material with low thermal expansion and a preparation process thereof, accordingly, the ceramic tool material may have both the high hardness of alumina ceramics after the hot pressing sintering, and reduces the thermal expansion coefficient of the overall ceramic material by adding the ScWOas the negative thermal expansion phase, which improves the thermal shock resistance of ceramic tools in high-speed cutting engineering and meets the requirements of large temperature range during the machining of nickel-based superalloys. Moreover, the composite material does not use metal binder and has strong thermal stability even in the high-speed machining under extreme heat-force-chemistry coupling, so it has a high machining compatibility for nickel-based superalloys.

Alumina-based ceramic tool material with low thermal expansion and preparation process thereof

A hydrogel for cell-laden bioprinting, bioink, and a preparation method and an application thereof, relates to the technical field of biomedical polymer hydrogels. The hydrogel for cell-laden bioprinting is polymer gel formed by adding a cell-specific material into a matrix of alginate and gelatin and crosslinking and curing, wherein the cell-specific material is polypeptide selected according to different laden cells. The structures printed using the hydrogel may have the advantages such as adjustable mechanical properties, adjustable porosity, high biocompatibility, high printing accuracy, and high customizability, which may widely support the printing of human tissues and organs such as spinal cord, cartilage, and heart, and has good prospects for applications in tissue repair, organ transplantation and so on.

Hydrogel for cell-laden bioprinting, bioink, and preparation method and application thereof

A method for preparing a shell-bionic ceramic tool and a shell-bionic ceramic tool, wherein the shell-bionic ceramic tool includes alternating stacks of ceramic powders with different components, pressing a ceramic green body using a cold briquetting method, carrying out pre-pressing once using a graphite indenter on a working surface thereof after each layer of the ceramic powder being loaded, and pressing a last layer using a graphite rod, and then pressing a whole ceramic green body with a certain pressure to promote a bonding of the layers of ceramic powder, which in turn gives a complex shape to an interface between the layers, increases a bonding area between the layers, and plays the role of hindering crack expansion, extending the crack expansion path, and improving the bonding strength of the interface; after then, hot-pressed sintering is used to densify the ceramic green body to obtain the shell-bionic ceramic tool.

Method for preparing shell-bionic ceramic tool and shell-bionic ceramic tool

A monocrystalline silicon micro-nano dual-scale anti-reflection texture and a preparation method therefor. The preparation method combines nanosecond-laser-assisted waterjet near-damage-free processing and femtosecond laser scanning, and subsurface damage caused by a re-cast layer phenomenon and a hot crack in a monocrystalline silicon laser texturing process can be effectively reduced by combining a nanosecond-laser-assisted waterjet near-damage-free processing technology and an ultra-short pulse femtosecond laser cold processing technology; and meanwhile, a micro-scale frame structure and a nano-scale structure can be flexibly modified respectively by adjusting nanosecond-laser-assisted waterjet technological parameters and femtosecond laser technological parameters, a geometry light trapping effect and an effective dielectric effect can be achieved in a micro-nano dual-scale hybrid structure at the same time, and surface reflection is reduced.

Monocrystalline silicon micro-nano dual-scale anti-reflection texture and preparation method therefor

A crack self-healing functionally gradient material for ceramic cutting tools and a preparation method thereof. The material for ceramic cutting tools has a symmetrical gradient structure, and based on the percentage by mass, components of each layer include 50%-80% of Ti(C,N), 25%-5% of (W,Ti)C and 20%-0% of TiSi; contents of components of layers that are symmetrical relative to a central layer are the same and a thickness is symmetrically distributed; a content of Ti(C,N) gradually increases from the surface layer to the central layer, contents of (W,Ti)C and TiSigradually decrease by 5% from the surface layer to the central layer, and the contents of Ni and Mo gradually increase from the surface layer to the central layer.

Crack self-healing functionally gradient material for ceramic cutting tools and preparation method thereof

The present disclosure discloses an abrasive water jet full-section cutting type cutter head and application devices. The cutter head includes a cutter head body and a rotor eccentrically arranged on a working surface of the cutter head body. The rotor revolves with the cutter head body and also rotates about its own axis. At least one first nozzle is arranged on an edge of a working surface of the rotor. At least one group of second nozzles and at least one third nozzle are arranged on the working surface of the cutter head body, and the second nozzles and the third nozzle cooperate during the rotation of the cutter head body and the rotor, then a material to be cut is cut into a plurality of concentric rings, and the first nozzle cuts off the ring material to form fragments.

Abrasive water jet full-section cutting type cutter head and application devices

A single-crystal &#x3b2;-GaOMSM detector and a preparation method thereof, comprising: machining grooves on a single-crystal &#x3b2;-GaOsubstrate using a laser-assisted waterjet machining technique to form a 3D shape; wet etching the machined single-crystal &#x3b2;-GaOsubstrate using an HF solution to remove machining damage; performing Au evaporation on a surface of the single-crystal &#x3b2;-GaOsubstrate after processing, coating an Au thin film on the surface of the single-crystal &#x3b2;-GaOsubstrate; and grinding the surface of the single-crystal &#x3b2;-GaOsubstrate after evaporation to remove the Au thin film on an undressed surface and retain the Au thin film in the grooves, and then obtaining the single-crystal &#x3b2;-GaOMSM detector.

Single-crystal beta-GaOMSM detector and preparation method thereof

Growing community of inventors

Jinan, China

Dun Liu