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Magnetic performance and corrosion resistance of electroless plating CoWP film

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Rare Metals 2012年第3期31卷 264-271页

作者： Jiang, Li Pan, Shanshan Lu, Jianbiao Ke, Xin he, wenhao Yu, Yundan Wei, Guoying Ge, Hongliang College of Materials Science and Engineering China Jiliang University Hangzhou 310018 China Zhejiang Keda Magnetoelectricity Limited Company Huzhou 313200 China

The CoWP film with good magnetic performance and corrosion resistance was electrolessly plated from alkaline solution. The technical parameters of the electroless plating system were optimized. When the pH value of electroless plating solution was 11.0 and the reducing agent (NaH2PO2) content was 0.4 mol L 1, the target chemical reactions proceeded in the electroless plating solution smoothly with negligible interference and side effects. CoWP film prepared under optimal deposition condition contained more hexagonal close-packed (hcp) cobalt (ε-Co) of [110] and crystallographic orientation of Co [002]. VSM analysis reveals that the saturation magnetization of the CoWP film is 100～220 Am2 kg 1 and coercivity is (2.87～4.38)×104 A·cm 1. The corrosion behavior of CoWP film in 3.5% NaCl aqueous solution was studied by electrochemical experiments. The results prove that the corrosion resistance of the CoWP film deposited under the optimal depo-sition condition exhibites relatively lower corrosion current of (3.054～3.162)×10 6 A·cm 2. The surface morphology analysis indicates that the film is smooth and composed of regular-shaped crystallites.

关键词： CoWP film corrosion magnetic microstructure

Rapid Measurement and Control of Nitrogen-Vacancy Center-Axial Orientation in Diamond Particles

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Chinese Physics Letters 2020年第11期37卷 44-47页

作者： Guobin Chen Yang Hui Junci Sun wenhao he Guanxiang Du School of Mechanical and Electrical Engineering Suqian CollegeSuqian 223800China College of Telecommunication&Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210000China

Determination and control of nitrogen-vacancy(NV)centers play an important role in sensing the vector field by using their quantum *** measure orientation of NV centers in a diamond particle attached to a tapered fiber rapidly,we propose a new method to establish the direction cosine matrix between the lab frame and the NV body *** this method,only four groups of the ODMR spectrum peaks shift data need to be collected,and the magnetic field along±Z and±Y in the lab frame is applied in the *** can also control any NV axis to rotate to the X,Y,Z axes in the lab frame according to the elements of this *** demonstration of the DC and microwave magnetic field vector sensing is ***,the proposed method can help us to perform vector magnetic field sensing more conveniently and rapidly.

关键词： centers Diamond attached

Development,Application and Problem of Ductile Iron Lost Foam Casting Technology in China

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China Foundry 2010年第3期7卷 315-318页

作者： he wenhao Ye Shengping Han Xiaohong Tang Suoyu State Key Laboratory of Materials Processing and Die ＆ Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan China Castchem （Hangzhou） Inc. China

Lost-foam casting is a 21st century green casting technology. Over the past decade, there has been an extraordinary development in lost-foam casting in China; and ductile iron lost-foam casting has developed even more rapidly in foundry equipment, foundry raw materials, and casting engineers. There are 13 representative enterprises specializing in the production of ductile iron castings in China, which are listed in Table 1.

关键词：消失模铸造技术球墨铸铁中国开发应用铸造设备铸造原料球铁铸件

Lorentz quantum computer

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Chinese Physics B 2023年第4期32卷 175-183页

作者：何文昊王朕铎吴飙 International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Wilczek Quantum Center School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of Quantum Matter Beijing 100871China

A theoretical model of computation is proposed based on Lorentz quantum *** the standard qubits,this model has an additional bit,which we call hyperbolic bit(or hybit in short).A set of basic logical gates are constructed and their universality is *** an application,a search algorithm is designed for this computer model and is found to be exponentially faster than Grover's search algorithm.

关键词： quantum computing Lorentz quantum mechanics Grover search

3D-printable Boron Nitride/Polyacrylic Hydrogel Composites with High Thermal Conductivities

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1303-1310页

作者： DAI Jialei XUE Bingyu QIAN Qi he wenhao ZHU Chenglong LEI Liwen WANG Kun XIE Jingjing Hubei Longzhong Laboratory Xiangyang 441000China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Polyacrylic acid(PAA)hydrogel composites with different hexagonal boron nitride(h-BN)fillers were synthesized and successfully 3D-printed while their thermal conductivity was systematically *** the content of h-BN increasing from 0.1 wt%to 0.3 wt%,the thermal conductivity of the 3D-printed composites has been ***,through the shear force given by the 3D printer,a complete thermal conductivity path is obtained inside the hydrogel,which significantly improves the thermal conductivity of the h-BN hydrogel *** maximum thermal conductivity is 0.8808 W/(m·K),leading to a thermal conductive enhancement of 1000%,compared with the thermal conductivity of pure PAA *** study shows that using h-BN fillers can effectively and significantly improve the thermal conductivity of hydrogelbased materials while its 3D-printable ability has been maintained.

关键词： hydrogel composites boron nitride 3D printing thermal conductivity

3-4 First-principles Investigation Self-trapping of helium in Tungsten

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IMP & HIRFL Annual Report 2015年第1期 93-94页

作者： he wenhao Gao Xing Wang Zhiguang 不详

The tungsten are deemed to be the most promising candidates as plasma facing material due to its high melting temperature, good thermal properties, low sputtering yields[1]. In the near surface of plasma facing materials high densities of interstitials and vacancies are produced in addition to high concentrations of hydrogen and helium (he). he easily are trapped by vacancies, dislocations, grain boundaries to form he bubble nucleation. When no traps are available, he spontaneously form clusters, which result in strong lattice strain. It can be relieved by ejecting one or more matrix atoms to form one or more Frenkel Pairs, i:e:vacancies and self-interstitial atoms. he cluster will be trapped by the vacancy it created, this is a self-trapping event[2].

关键词： First-principles Investigation Self-trapping

First-principles Investigation of Vacancy and Self-interstitial Atom Segregations at Grain Boundaries in Tungsten

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IMP & HIRFL Annual Report 2017年第1期 100-102页

作者： he wenhao Gao Xing Wang Zhiguang 不详

Materials served in nuclear energy systems usually expose to high irradiation doses of *** particles lead to creations of a large numbers of vacancies(Vs)and self-interstitial atoms(SIAs)in *** SIAs may gather to form dislocation loops and stacking-fault tetrahedrons,and the Vs usually gather to form *** defects contribute to material swelling,hardening,amorphization and embrittlement,and may accelerate material failure under irradiation[1].As recombination center of Vs and SIAs,grain boundaries(GBs)are able to enhance the radiation resistance of materials[2].However,experimental investigation show that point defects sink strengths might depend on GB *** vacancy sink efficiency of the twin boundaryΣ3(110)[111]is significantly lower than that of other GBs[3−5].

关键词： swelling dislocation stacking

4-13 First-principles Investigation of helium Adsorptions at Grain Boundaries in Tungsten

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IMP & HIRFL Annual Report 2016年第1期 125-126页

作者： he wenhao Gao Xing Wang Zhiguang 不详

The tungsten was deemed to be the most promising candidates as plasma facing material(PFM)due to its high melting temperature,good thermal properties,low sputtering yield[1].The PFMs will be exposed to a high flux of helium atoms escaping from the *** easily are trapped by vacancies,dislocations,grain boundaries(GBs)to form helium bubbles,which can significantly degrade the mechanical properties of *** wellknown example is the high-temperature helium embrittlement(he),which is the drastic embrittlement of metal at temperatures above 0.5 Tm(Tm:melting temperature)due to helium bubbles formation at GBs,even at extremely low overall helium *** enhance the he resistance of metal,it is necessary to study adsorptions of helium atoms at GBs firstly.

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Postoperative Transition from Euglycemic Diabetic Ketoacidosis to Diabetic Ketoacidosis: A Case Report

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Journal of Diabetes Mellitus 2024年第4期14卷 183-193页

作者： Dan Cao Li Shi Piao Chen wenhao he State Key Laboratory of Oncology in South China Guangzhou China Guangdong Provincial Clinical Research Center for Cancer Guangzhou China Department of Breast Cancer Sun Yat-sen University Cancer Center Guangzhou China Department of Nursing Sun Yat-sen University Cancer Center Guangzhou China

Objective: This study aims to analyze the causes of postoperative transition from euglycemic diabetic ketoacidosis (EDKA) to diabetic ketoacidosis (DKA), summarize clinical nursing experiences, enhance the recognition and management of such complications, and improve patient prognosis. Methods: A detailed case analysis was conducted on a patient who developed EDKA early after breast cancer surgery, which subsequently transitioned to DKA. A multidisciplinary team (MDT) consultation was employed to formulate a personalized nursing plan. Specific methods included comprehensive clinical data collection, monitoring of blood glucose, urine ketones, and blood ketone levels;implementing dynamic insulin adjustment strategies;providing dietary education and psychological support;and guiding dietary adjustments through nutritional consultations. Results: Through personalized observation, blood glucose management, dietary management, psychological care, and wound care, the patient’s blood and urine ketone levels returned to normal, the flap healed well, and blood glucose was maintained within the normal range. The patient is currently undergoing postoperative adjuvant chemotherapy. Conclusion: For postoperative patients with unexplained nausea, vomiting, and dehydration, regardless of diabetes history, timely testing of blood glucose, blood ketones, blood urea nitrogen, creatinine, electrolytes, and blood gas analysis can facilitate early detection of EDKA. Additionally, personalized management of blood glucose, diet, psychological care, and wound care is crucial for the prevention and treatment of EDKA.

关键词： Breast Cancer Diabetic Ketoacidosis (DKA) Euglycemic Diabetic Ketoacidosis (EDKA) Blood Glucose Nursing Care