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公开(公告)号：US20250051886A1
公开(公告)日：2025-02-13
申请号：US18073097
申请日：2024-08-26
Applicant: INSTITUTE OF METAL RESEARCH, CHINESE ACADEMY OF SCIENCES , SICHUAN MEGALL MEDICAL DEVICES CO., LTD
Abstract: The disclosure relates to the technical field of preparing the metal material of magnesium alloy, and particularly provides a method for preparing biomedical magnesium alloy wires. The magnesium, zinc, and neodymium alloys are subject to smelting, casting, rolling, and other processes to prepare plates. The plates are subjected to a special mechanical stirring process to prepare a processing zone with the same thickness as the plates. After machining, the processing zone is used as the final product of the wire or drawn in multiple passes to finally form the wire with the required diameter. By introducing rolling and mechanical stirring processes, the disclosure improves the forming property of the wire, so that the alloy grains are significantly refined, the size of the second phase is greatly reduced and most of them are solid-soluble in the matrix, the strength of the obtained wire, and especially the elongation, is greatly improved, and better corrosion resistance is obtained, which meet the performance requirements of medical magnesium alloy wire.
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公开(公告)号：US11939669B2
公开(公告)日：2024-03-26
申请号：US17627754
申请日：2019-11-26
Inventor： Lusheng Liu , Xin Jiang , Nan Huang
IPC: C23C16/27 , C23C16/458 , C23C16/52 , C23C16/54
CPC classification number: C23C16/271 , C23C16/4587 , C23C16/52 , C23C16/54
Abstract: A coating method for preparing diamond thin film continuously by HFCVD device includes the steps of: (a) carbonizing left and right chamber hot filaments; (b) disposing a substrate on a platform along with a trolley in a sample access chamber under vacuum condition; opening a left chamber gate valve and moving the substrate to left thin film growth chamber; closing the left chamber gate valve to grow diamond thin film on the substrate; (c) repeating step (b) by using a right chamber gate valve and right thin film growth chamber to grow diamond thin film; (d) opening the left chamber gate valve and moving the substrate to the sample access chamber; closing the left chamber gate valve and dropping to room temperature while under vacuum condition; releasing the vacuum condition and taking out the substrate with diamond thin film; (e) repeating step (d) for the right chamber gate valve.
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公开(公告)号：US20220259707A1
公开(公告)日：2022-08-18
申请号：US17611061
申请日：2019-09-29
Inventor： Dianzhong LI , Yikun LUAN , Hongwei LIU , Paixian FU , Xiaoqiang HU , Pei WANG , Lijun XIA , Chaoyun YANG , Hanghang LIU , Yang LIU , Peng LIU , Yiyi LI
Abstract: Provided are an ultra-clean rare earth steel and an occluded foreign substance modification control method, the steel includes 10-200 ppm of rare earth elements, 50% or more occluded foreign substances in the steel are dispersed into RE-oxygen-sulfide with the average equivalent diameter Dmean ranging from 1-5 μm in a spherical shape or a substantially spherical shape or a granular shape; according to the method, at least 80%, preferably at least 90%, of Al2O3 occluded foreign substances in the steel are modified into RE-oxygen-sulfide, compared with steel with the same components without rare earth, the total amount of the occluded foreign substances in the steel is reduced by 18% or higher, the cracking probability caused by occluded foreign substances such as Al2O3 in traditional pure steel is reduced, the mechanical performance such as the fatigue life of the steel is remarkably improved.
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公开(公告)号：US11149095B2
公开(公告)日：2021-10-19
申请号：US16475921
申请日：2017-12-27
Inventor： Jinsong Zhang , Yukun Yan , Yangtao Zhou , Zhiyu Liu
Abstract: Cellulose II nanocrystal particles have a crystallinity ≥80%, a number-average molecular weight ranging from 1200 to 2500, and a molecular weight distribution coefficient Mw/Mn≤1.30. The cellulose II nanocrystal particles can be prepared by: subjecting a cellulose raw material to an amorphization reconstitution and then to a crystallization acidolysis. The crystallization acidolysis may be carried out under a low concentration acidic condition. The method enables high efficient and clean production and quality control of cellulose nanocrystal materials.
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公开(公告)号：US20210102280A1
公开(公告)日：2021-04-08
申请号：US16500083
申请日：2018-04-20
Applicant: INSTITUTE OF METAL RESEARCH, CHINESE ACADEMY OF SCIENCES , JIANGSU HAIJIN METALLIC GLASS TECHNOLOGY CO., LTD
Inventor： Yi LI , Yinxiao WANG , Hongchuan CAI , Jinjiu QIU
Abstract: A Zr-based amorphous alloy and a manufacturing method thereof, wherein the Zr-based amorphous alloy includes a composition of (ZraHfbCucNidAle)100-XOx, wherein a, b, c, d, e, x are atomic percentages, and 49≤a≤55, 0.05≤b≤1, 31≤c≤38, 3≤d≤5, 7≤e≤10.5, and 0.05≤x≤0.5, wherein based on the volume of the alloy, the Zr-based amorphous alloy is cast into a rod-shaped sample having a diameter of 12-16 mm and a length of 60 mm, an amorphous content of 40%-95%, a strength of above 1800 MPa, and a fracture toughness of higher than 90 KPam1/2.
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Patent Agency Ranking
公开(公告)号：US20190330378A1
公开(公告)日：2019-10-31
申请号：US16475921
申请日：2017-12-27
Inventor： Jinsong Zhang , Yukun Yan , Yangtao Zhou , Zhiyu Liu
Abstract: Cellulose II nanocrystal particles have a crystallinity ≥80%, a number-average molecular weight ranging from 1200 to 2500, and a molecular weight distribution coefficient Mw/Mn≤1.30. The cellulose II nanocrystal particles can be prepared by: subjecting a cellulose raw material to an amorphization reconstitution and then to a crystallization acidolysis. The crystallization acidolysis may be carried out under a low concentration acidic condition. The method enables high efficient and clean production and quality control of cellulose nanocrystal materials.
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公开(公告)号：US10047442B2
公开(公告)日：2018-08-14
申请号：US14896767
申请日：2013-10-16
Inventor： Fuhui Wang , Shenglong Zhu , Minghui Chen , Mingli Shen , Cheng Wang
IPC: C23C24/08 , C23C4/02 , C23C4/18 , C23C28/00 , B22F1/00 , B22F9/04 , C22C19/05 , C22C30/00 , C22F1/10
Abstract: The present invention provides a surface alloy coating composite material for a high temperature resistant material, a coating and a manufacturing method thereof, wherein the surface alloy coating composite material is made of metal alloy powder having a face-centered cubic structure and enamel powder, and a component percentage thereof is as follows: 10-70 wt % is the metal alloy powder, and remaining is the enamel powder; the metal alloy powder is selected from at least one type of NiCrAIX, NiCrX and NiCoCrAIX, wherein X is at least one type of hafnium, zirconium, a rare earth element and mixed rare earth, and the mixed rare earth can be two types or more than two types of rare earth elements that are used together or a rare earth element and one type or multiple types of Na, K, Ca, Sr and Ba that are used in a combined way.
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公开(公告)号：US11655529B2
公开(公告)日：2023-05-23
申请号：US16500083
申请日：2018-04-20
Applicant: INSTITUTE OF METAL RESEARCH, CHINESE ACADEMY OF SCIENCES , JIANGSU HAIJIN METALLIC GLASS TECHNOLOGY CO., LTD
Inventor： Yi Li , Yinxiao Wang , Hongchuan Cai , Jinjiu Qiu
Abstract: A Zr-based amorphous alloy and a manufacturing method thereof, wherein the Zr-based amorphous alloy includes a composition of (ZraHfbCucNidAle)100-XOx, wherein a, b, c, d, e, x are atomic percentages, and 49≤a≤55, 0.05≤b≤1, 31≤c≤38, 3≤d≤5, 7≤e≤10.5, and 0.05≤x≤0.5, wherein based on the volume of the alloy, the Zr-based amorphous alloy is cast into a rod-shaped sample having a diameter of 12-16 mm and a length of 60 mm, an amorphous content of 40%-95%, a strength of above 1800 MPa, and a fracture toughness of higher than 90 KPam1/2.
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公开(公告)号：US11655512B2
公开(公告)日：2023-05-23
申请号：US17641732
申请日：2019-09-29
Inventor： Dianzhong Li , Yikun Luan , Pei Wang , Xiaoqiang Hu , Paixian Fu , Hongwei Liu , Lijun Xia , Chaoyun Yang , Hanghang Liu , Hang Liu , Yiyi Li
CPC classification number: C21C7/0006 , C21C7/10 , C22C33/04 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06
Abstract: Provided in the present application are a rare-earth microalloyed steel and a control process. The steel has a special microstructure, and the microstructure comprises a rare earth-rich nanocluster having a diameter of 1-50 nm. The nanocluster has the same crystal structure type as a matrix. The rare earth-rich nanocluster inhibits the segregation of the elements S, P and As on a grain boundary, and obviously improves the fatigue life of the steel. In addition, a rare-earth solid solution also directly affects a phase change dynamics process so that the diffusion-type phase change starting temperature in the steel changes at least to 2° C., and even changes to 40-60° C. in some kinds of steel, thereby greatly improving the mechanical properties thereof, and providing a foundation for the development of more kinds of high-performance steel.
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公开(公告)号：US20190112195A1
公开(公告)日：2019-04-18
申请号：US16087922
申请日：2017-03-22
Inventor： Songfeng PEI , Wencai REN , Huiming CHENG
IPC: C01B32/192 , C01B32/198 , C01B32/205 , C01B32/225 , C01B32/23
Abstract: Provided is a method for continuously preparing graphene oxide nanoplatelets by electrochemical treatment, comprising using a continuous graphite product, successively processing two step treatments, i.e. an electrochemical intercalation and an electrolytic oxidation stripping. The electrochemical intercalation is carried out in a concentrated acid, using a graphite material as an anode and energizing under a soaking condition such that acid radical ions enter into graphite interlamination under the drive of an electric field, to form an intercalated graphite continuous material with first-order or low-order intercalation. The electrolytic stripping is using the intercalated continuous graphite material as an anode, energizing in an aqueous electrolyte solution, and performing oxidation stripping. The method has the following advantages: a product does not contain a metal impurity, the oxidation degree of graphene is controllable, the process is continuable and automatable, and the method is safe and has low emissions, etc.
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