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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
发明人： Lusheng Liu , Xin Jiang , Nan Huang
IPC分类号： C23C16/27 , C23C16/458 , C23C16/52 , C23C16/54
CPC分类号： C23C16/271 , C23C16/4587 , C23C16/52 , C23C16/54
摘要： 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
发明人： Dianzhong LI , Yikun LUAN , Hongwei LIU , Paixian FU , Xiaoqiang HU , Pei WANG , Lijun XIA , Chaoyun YANG , Hanghang LIU , Yang LIU , Peng LIU , Yiyi LI
摘要： 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
发明人： Jinsong Zhang , Yukun Yan , Yangtao Zhou , Zhiyu Liu
摘要： 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
申请人： INSTITUTE OF METAL RESEARCH, CHINESE ACADEMY OF SCIENCES , JIANGSU HAIJIN METALLIC GLASS TECHNOLOGY CO., LTD
发明人： Yi LI , Yinxiao WANG , Hongchuan CAI , Jinjiu QIU
摘要： 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：US20190330378A1
公开(公告)日：2019-10-31
申请号：US16475921
申请日：2017-12-27
发明人： Jinsong Zhang , Yukun Yan , Yangtao Zhou , Zhiyu Liu
摘要： 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
发明人： Fuhui Wang , Shenglong Zhu , Minghui Chen , Mingli Shen , Cheng Wang
IPC分类号： C23C24/08 , C23C4/02 , C23C4/18 , C23C28/00 , B22F1/00 , B22F9/04 , C22C19/05 , C22C30/00 , C22F1/10
摘要： 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：US11975334B2
公开(公告)日：2024-05-07
申请号：US17272339
申请日：2019-08-19
发明人： Chunguang Bai , Xi Xie , Yuyou Cui , Rui Yang
CPC分类号： B02C17/04 , B02C17/14 , B02C17/1815 , B02C23/24 , B02C25/00
摘要： A method for preparing nanometer MAX phase ceramic powder or slurry having a laminated structure by means of ball milling and regulating the oxygen content of the powder. Micron-sized MAX phase ceramic coarse powder is adopted as a raw material, during ball milling, a gas or a liquid-state gas having a special effect is introduced into a ball milling tank, and by means of multi-dimensional functions and regulation such as ball milling parameters and gas reaction, the nanometer laminated MAX phase ceramic powder or the slurry containing the component is obtained. The surface components and the activated state of the powder are regulated while the particle size adjustment control of the powder is realized.
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8.发明授权公开(公告)号：US11820053B2
公开(公告)日：2023-11-21
申请号：US16765861
申请日：2018-11-14
发明人： Wencai Ren , Jing Zhong , Huiming Cheng
CPC分类号： B29C41/042 , B29C41/003 , B29C41/22 , B29C41/42 , B29C41/46 , B29C69/001 , B29L2007/008
摘要： An efficient method for preparing a highly-directional highly-dense two-dimensional material film. The method comprises: using a circular tube with a smooth inner surface as a casting mold; and pouring a solution containing a two-dimensional material into the mold when the mold rotates at high speed in a circumferential direction, wherein the solution is uniformly coated on the inner surface of the mold by centrifugal force, the centrifugal rotation generating a shearing force that causes the two-dimensional material to be directionally and regularly arranged layer upon layer in a circumferential direction in the solution, and, the centrifugal force facilitates highly-dense accumulation of the two-dimensional material, thereby obtaining a highly-directional highly-dense two-dimensional material film. The method is applicable in the preparation of a variety of two-dimensional materials such as graphene, a composite material film thereof, and a laminated heterostructure film, and greatly improves electrical, thermal, and mechanical properties of a film.
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公开(公告)号：US20220307097A1
公开(公告)日：2022-09-29
申请号：US17641732
申请日：2019-09-29
发明人： Dianzhong LI , Yikun LUAN , Pei WANG , Xiaoqiang HU , Paixian FU , Hongwei LIU , Lijun XIA , Chaoyun YANG , Hanghang LIU , Hang LIU , Yiyi LI
摘要： 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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10.发明申请公开(公告)号：US20210323875A1
公开(公告)日：2021-10-21
申请号：US17272348
申请日：2019-08-19
发明人： Qing JIA , Xi XIE , Chunguang BAI , Yuyou CUI , Rui YANG
摘要： The present invention relates to the field of MAX-phase ceramic-based composites, specifically to a short-fiber-reinforced oriented MAX-phase ceramic-based composite and a preparation method therefor. By using a new process with a fiber, a nano lamellar MAX-phase ceramic powder, other additives, etc., for preparing a fiber-reinforced MAX-phase ceramic-based composite, a novel ternary composite is prepared, wherein a matrix is composed of a highly oriented lamellar MAX-phase ceramic, the fiber is distributed parallel to the lamellar MAX-phase ceramic in an axial direction, and a granulate ceramic phase enhancement phase is dispersed in the matrix. Thus, the problems of a MAX-phase ceramic-based composite matrix material prepared by an existing method, such as coarse grains, multiple internal defects and a low strength, and a poor fracture toughness; and a reaction sintering temperature being too high such that fibers are chemically and physically damaged in a substrate, resulting in performance degradation, are solved. Fibers prepared by the method are suitable for large-scale industrial preparation and have properties that are far superior to those of any existing known fiber MAX-phase composite.
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