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学者姓名：周正
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Abstract ：
本发明公开了一种竹笋结构W‑Zr基非晶合金复合材料及其制备方法与应用，涉及金属复合材料技术领域，复合材料的整体结构上分别存在硬脆区和软韧区，其中硬脆区体积分数为10％～30％，软韧区体积分数为70％～90％，两区域呈锥形交替分布，其分布为仿生竹笋结构，这种竹笋结构的优势在于：在高应变速率条件下，软韧区先发生变形，随着变形程度增加，软韧区与硬脆区同时变形，随后硬脆区开裂，沿着设计结构方式分离脱落，重新露出尖锐区域完成自锐化，类似竹笋剥落；循环此步骤，完成侵彻过程，可显著增加穿甲弹威力。
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| GB/T 7714 | 谈震 , 席钊 , 宁子阳 et al. 一种竹笋结构W-Zr基非晶合金复合材料及其制备方法与应用 : CN202310055654.3[P]. | 2023-01-17 . |
| MLA | 谈震 et al. "一种竹笋结构W-Zr基非晶合金复合材料及其制备方法与应用" : CN202310055654.3. | 2023-01-17 . |
| APA | 谈震 , 席钊 , 宁子阳 , 贺定勇 , 周正 , 郭星晔 et al. 一种竹笋结构W-Zr基非晶合金复合材料及其制备方法与应用 : CN202310055654.3. | 2023-01-17 . |
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Abstract ：
本发明涉及一种具有低热导率和高热稳定性的高熵硅酸盐陶瓷及其制备方法与应用。高熵陶瓷材料的化学式为RE2Si2O7，其中RE可为Er，Sc，Lu，Yb或Tm中的任意四种稀土元素。制备方法为：以四种RE2O3粉体和纯SiO2粉体为原料，以丙酮或无水乙醇为混合介质，用高能球磨机混合，充分混合的粉末经过烘干、研磨、筛分后，选取筛分后的细粉，在1500～1600℃的温度范围煅烧合成高熵陶瓷材料，然后采用放电等离子烧结法制备致密的块材陶瓷。所制备的陶瓷块材的致密度可达98％以上，经测量该材料具有非常低的热导率，在室温到1000℃范围内热导率均小于1.1W/m.K，可以用作防隔热材料。
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| GB/T 7714 | 贺定勇 , 欧克 , 郭星晔 et al. 一种具有低热导率和高热稳定性的高熵硅酸盐陶瓷及其制备方法与应用 : CN202210112836.5[P]. | 2022-01-29 . |
| MLA | 贺定勇 et al. "一种具有低热导率和高热稳定性的高熵硅酸盐陶瓷及其制备方法与应用" : CN202210112836.5. | 2022-01-29 . |
| APA | 贺定勇 , 欧克 , 郭星晔 , 崔丽 , 周正 , 谈震 et al. 一种具有低热导率和高热稳定性的高熵硅酸盐陶瓷及其制备方法与应用 : CN202210112836.5. | 2022-01-29 . |
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Abstract ：
The Mo-10Si-(0, 5, 10, 15)B (at.%) alloys located in Moss (Mo solid solution) +Mo3Si +T2 (Mo5SiB2) region were prepared by arc melting. The effect of B content on the microstructure, microhardness, fracture toughness and oxidation resistance of the alloys was studied. In the Mo-10Si alloy, there are primary Mo-ss and peritectic Mo3Si phases. With the addition of B, (Mo-ss + T2) binary and (Mo-ss + T2 + Mo3Si) ternary eutectics emerge in Mo-10Si-(5, 10)B alloys. For Mo-10Si-15B alloy, primary Moss disappears and the mi-crostructure is only composed of binary and ternary eutectics. With the increase of B content, the proportion and grain size of Mo-ss decrease. The microhardness of alloys increases with the increase of B content due to the increasing intermetallics. The fracture toughness of alloys decreases obviously in single-edge notched three-point bending testing (SENB) and the fracture mode transforms from transgranular fracture to intergranular fracture because of the refinement of Mo-ss. In the high-temperature oxidation test at 1250 degrees C, the oxidation weight loss of the alloys decreases with the addition of B due to the densification of the borosilicate layer. (C) 2021 Elsevier B.V. All rights reserved.
Keyword ：
Microstructure Microstructure Oxidation resistance Oxidation resistance B content B content Mo-Si-B alloys Mo-Si-B alloys Fracture toughness Fracture toughness
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| GB/T 7714 | Jin, Ming , He, Dingyong , Shao, Wei et al. Influence of B contents on the microstructure, fracture toughness and oxidation resistance of Mo-Si-B alloys [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2022 , 890 . |
| MLA | Jin, Ming et al. "Influence of B contents on the microstructure, fracture toughness and oxidation resistance of Mo-Si-B alloys" . | JOURNAL OF ALLOYS AND COMPOUNDS 890 (2022) . |
| APA | Jin, Ming , He, Dingyong , Shao, Wei , Tan, Zhen , Guo, Xingye , Zhou, Zheng et al. Influence of B contents on the microstructure, fracture toughness and oxidation resistance of Mo-Si-B alloys . | JOURNAL OF ALLOYS AND COMPOUNDS , 2022 , 890 . |
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Abstract ：
开发了三种不同结构的Ni-20Al丝材,对其火焰喷涂工艺性和涂层微结构特征等进行分析,并与商用Metco 405NS丝材及所制备的涂层进行了对比.结果表明,丝材结构影响了火焰加热时热量由丝材表面向芯部的传导,导致丝材熔化状态产生显著差异,进而决定了喷涂焰流的稳定性以及相关涂层组织的均匀性.其中,采用轧制拉拔包丝技术制备的Ni-20Al丝材,呈现出优异的喷涂工艺稳定性,所制备的涂层组织均匀,平均显微硬度和结合强度分别可达348.3 HV0.05、62 MPa,与405NS丝材制备涂层性能基本一致,具备了较好的应用潜力.
Keyword ：
微观组织结构 微观组织结构 Ni-20Al丝材 Ni-20Al丝材 火焰喷涂 火焰喷涂
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| GB/T 7714 | 路洋 , 闫泽 , 周正 et al. Ni-20Al丝材制备及涂层微结构特征研究 [J]. | 热喷涂技术 , 2022 , 14 (3) : 64-73 . |
| MLA | 路洋 et al. "Ni-20Al丝材制备及涂层微结构特征研究" . | 热喷涂技术 14 . 3 (2022) : 64-73 . |
| APA | 路洋 , 闫泽 , 周正 , 王彦军 , 苗小锋 , 冀晓鹃 et al. Ni-20Al丝材制备及涂层微结构特征研究 . | 热喷涂技术 , 2022 , 14 (3) , 64-73 . |
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Abstract ：
In the present research, spherical W–Mo alloy powder for additive manufacturing was successfully synthesized by spray granulation (SG) in combination with thermal plasma spheroidization (TPS). Firstly, W and Mo particles (1–3 μm) were banded together through SG and formed porous agglomerated powder with desired particle size distribution and flowability. The porous agglomerated W–Mo powder was subsequently melted through thermal plasma, W and Mo dissolved together and formed solid solution accompanied with powder densification during TPS. Through optimization of the process conditions, the spheroidized W–Mo alloy powder exhibits homogeneous element distribution, low oxygen content (~0.08%), and good flowability (10 s/50 g), which meet the demand for laser powder bed fusion (LPBF). Remarkably, nearly full dense W–Mo alloy with few pores could be fabricated by LPBF based on the spheroidized W–Mo alloy powder. © 2020 Elsevier Ltd
Keyword ：
Agglomeration Agglomeration Particle size analysis Particle size analysis Molybdenum alloys Molybdenum alloys Industrial research Industrial research Additives Additives 3D printers 3D printers Particle size Particle size Granulation Granulation Compressive strength Compressive strength
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| GB/T 7714 | Tan, Zhen , Zhou, Zhenlu , Wu, Xu et al. In situ synthesis of spherical W–Mo alloy powder for additive manufacturing by spray granulation combined with thermal plasma spheroidization [J]. | International Journal of Refractory Metals and Hard Materials , 2021 , 95 . |
| MLA | Tan, Zhen et al. "In situ synthesis of spherical W–Mo alloy powder for additive manufacturing by spray granulation combined with thermal plasma spheroidization" . | International Journal of Refractory Metals and Hard Materials 95 (2021) . |
| APA | Tan, Zhen , Zhou, Zhenlu , Wu, Xu , Wang, Yiming , Shao, Wei , Guo, Xingye et al. In situ synthesis of spherical W–Mo alloy powder for additive manufacturing by spray granulation combined with thermal plasma spheroidization . | International Journal of Refractory Metals and Hard Materials , 2021 , 95 . |
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Abstract ：
To improve thermal barrier applications in advanced vehicle engines, a novel Fe-based amorphous composite coating was designed by introducing ceramic oxides and was prepared by atmospheric plasma spraying (APS). The microstructure and related properties of the as-deposited coating were investigated in detail. The composite coating comprises a well-formed FeCrNbBSi amorphous metallic matrix and dispersed yttria-stabilized zirconia (YSZ) splats. A unique Si-oxide interfacial layer with a thickness of several nanometers and an amorphous structure forms between the metallic matrix and ceramic phase, which is attributed to a combination of multiple effects. The composite coating displays extremely low thermal conductivity from 2.28 W/mK at 100 °C to 3.36 W/mK at 600 °C and can increase the surface temperature of the piston crown by 18.93 °C, which implies a significant means of enhancing the power efficiency. The improved thermal barrier ability of the composite coating is revealed as the crucial effect of the Si-oxide interfacial layer, which induces an increased interfacial thermal resistance. The fracture toughness of the composite coating remains at 3.40 MPa·m1/2, comparable to that of the monolithic amorphous coating, 3.74 MPa·m1/2, which is closely related to the formation of a Si-oxide layer and its nanoscale thickness. Therefore, the Fe-based amorphous composite coating developed here demonstrates great potential as an innovative metal-based thermal barrier coating for application in vehicle engines and provides specific inspiration for future works exploring the interfacial engineering of coating.
Keyword ：
composite coating composite coating interfacial layer interfacial layer thermal conductivity thermal conductivity Fe-based amorphous alloy Fe-based amorphous alloy fracture toughness fracture toughness
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| GB/T 7714 | Zhou Zheng , Han Feng-Xi , Yao Hai-Hua et al. Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application. [J]. | ACS applied materials & interfaces , 2021 , 13 (19) : 23057-23066 . |
| MLA | Zhou Zheng et al. "Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application." . | ACS applied materials & interfaces 13 . 19 (2021) : 23057-23066 . |
| APA | Zhou Zheng , Han Feng-Xi , Yao Hai-Hua , Li Yan-Ze , Yang Yan-Ge , Guo Xing-Ye et al. Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application. . | ACS applied materials & interfaces , 2021 , 13 (19) , 23057-23066 . |
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Abstract ：
本发明提供一种球形Mo‑Si‑B粉末及其制备方法和应用。所述制备方法包括以下步骤：制备Mo‑Si‑B合金铸锭；将所述Mo‑Si‑B合金铸锭经过机械破碎，以制造在预先确定为适合用作等离子球化过程中的原料的粒径范围内的前驱体粉末；对在所述确定的粒径范围内的所述前驱体粉末进行所述等离子球化，使所述前驱体粉末吸热熔融球化并骤冷固化以形成球形Mo‑Si‑B粉末。该方法制备的球形粉末粒径分布均匀、球形度高、流动性好, 可满足各种表面工程和粉末冶金的要求，同时杂质含量低，含氧量＜0.09％，有利于提高Mo‑Si‑B涂层的整体性能。
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| GB/T 7714 | 邵蔚 , 靳鸣 , 贺定勇 et al. 一种用于铌基合金表面的高温抗氧化涂层 : CN202110969270.3[P]. | 2021-08-23 . |
| MLA | 邵蔚 et al. "一种用于铌基合金表面的高温抗氧化涂层" : CN202110969270.3. | 2021-08-23 . |
| APA | 邵蔚 , 靳鸣 , 贺定勇 , 吴旭 , 谈震 , 周正 et al. 一种用于铌基合金表面的高温抗氧化涂层 : CN202110969270.3. | 2021-08-23 . |
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Abstract ：
本发明公开了一种利用激光增材制备点阵结构非晶‑纳米晶合金的方法，属于金属激光增材制造技术领域，所述方法包括：制备符合激光增材制造需求且具有较高非晶形成能力的锆基/钛基非晶合金粉末，利用激光增材制造技术获得能够成形非晶/纳米晶合金的临界尺寸及其相匹配的工艺参数，结合临界尺寸及点阵结构的静力载荷应力分布情况，完成强塑性匹配的点阵结构设计，在此基础上，利用激光增材制造技术制备点阵结构非晶/纳米晶合金。本发明所制备的点阵结构非晶/纳米晶合金具有高的比强度和塑性变形能力。
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| GB/T 7714 | 谈震 , 李锦涛 , 贺定勇 et al. 一种利用激光增材制备点阵结构非晶-纳米晶合金的方法 : CN202110018514.X[P]. | 2021-01-07 . |
| MLA | 谈震 et al. "一种利用激光增材制备点阵结构非晶-纳米晶合金的方法" : CN202110018514.X. | 2021-01-07 . |
| APA | 谈震 , 李锦涛 , 贺定勇 , 周正 , 郭星晔 , 崔丽 et al. 一种利用激光增材制备点阵结构非晶-纳米晶合金的方法 : CN202110018514.X. | 2021-01-07 . |
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增材制造技术(AM)是一种基于离散-堆积原理,以计算机模型数据来加工组件的新型制造技术.激光选区熔化(SLM)作为增材制造领域的一项重要技术,以其一体化制造特点和在复杂结构零部件制造领域的显著优势,成为航空航天制造领域的重点发展技术和前沿方向.本文综述了SLM技术的材料体系和应用领域,主要对SLM技术的最新工艺研究和航空航天领域的典型应用进行细致分析.重点阐述SLM铁基合金、镍基合金、钛合金和铝合金等材料体系的研究进展及成果.SLM技术在各领域广泛应用的同时,也存在成形材料内部缺陷多、高性能材料的裂纹及变形、标准体系的欠缺和粉末材料兼容性低等诸多问题和不足之处,使其发展受到一定制约,需要在这些方面做更深入的工作.
Keyword ：
发展现状 发展现状 激光选区熔化 激光选区熔化 一体化复杂结构 一体化复杂结构 材料体系 材料体系 轻量化设计 轻量化设计
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| GB/T 7714 | 杨胶溪 , 吴文亮 , 王长亮 et al. 激光选区熔化技术在航空航天领域的发展现状及典型应用 [J]. | 航空材料学报 , 2021 , 41 (2) : 1-15 . |
| MLA | 杨胶溪 et al. "激光选区熔化技术在航空航天领域的发展现状及典型应用" . | 航空材料学报 41 . 2 (2021) : 1-15 . |
| APA | 杨胶溪 , 吴文亮 , 王长亮 , 刘晨光 , 王树志 , 阳代军 et al. 激光选区熔化技术在航空航天领域的发展现状及典型应用 . | 航空材料学报 , 2021 , 41 (2) , 1-15 . |
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Abstract ：
To satisfy the requirement for martensite stainless steel layers with high efficiency, an optimized FeNiCrMo alloy layer was prepared using the laser cladding technique. The microstructure and frictional wear behavior of the cladding layer (a single layer with a thickness exceeding 2 mm) were investigated. The results confirmed a homogeneous thickness and crack-free character of the cladding layer. In the microstructure, equiaxed, dendritic and cellular grains were distributed along the thickness direction, and martensite and Cr/Mo-rich ferrite were observed in the dendritic and inter-dendritic regions, respectively. The frictional coefficient and wear volume of the cladding layer increased under increasing applied loads in a block-on-ring wear test, and the wear mechanism was dominated by abrasive and oxidative wear types. Under higher loads, adhesive wear prevailed. In a ball-on-disc wear test, increasing the temperature decreased the frictional coefficient and increased the wear volume. Oxidative and fatigue wear dominated the wear mechanism under this condition.
Keyword ：
microstructure microstructure laser cladding laser cladding frictional wear frictional wear FeCrNiMo stainless steel FeCrNiMo stainless steel
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| GB/T 7714 | Zhao Wanxin , Zhou Zheng , Huang Jie et al. Microstructure and Frictional Wear Behavior of FeCrNiMo Alloy Layer Fabricated by Laser Cladding [J]. | ACTA METALLURGICA SINICA , 2021 , 57 (10) : 1291-1298 . |
| MLA | Zhao Wanxin et al. "Microstructure and Frictional Wear Behavior of FeCrNiMo Alloy Layer Fabricated by Laser Cladding" . | ACTA METALLURGICA SINICA 57 . 10 (2021) : 1291-1298 . |
| APA | Zhao Wanxin , Zhou Zheng , Huang Jie , Yang Yange , Du Kaiping , He Dingyong . Microstructure and Frictional Wear Behavior of FeCrNiMo Alloy Layer Fabricated by Laser Cladding . | ACTA METALLURGICA SINICA , 2021 , 57 (10) , 1291-1298 . |
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