AIMS Materials Science最新文献_第4页

Increasing the charge/discharge rate for phase-change materials by forming hybrid composite paraffin/ash for an effective thermal energy storage system 通过形成杂化石蜡/灰分复合材料来提高相变材料的充放电速率，从而形成有效的储热系统

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023005

B. Suyitno, D. Rahmalina, R. Rahman

Low-temperature latent heat storage (LHS) systems are suitable for incorporating paraffin as the storage material. However, they face difficulty in actual implementation due to low thermal conductivity (TC). The present study used volcanic ash as an environmentally friendly and cost-effective material to increase the TC of paraffin. Three composites of paraffin/ash were prepared with ash proportions of 10 wt%, 30 wt% and 50 wt%. Characterizations were done to evaluate the average TC and properties. Thermal performance evaluation was conducted by analyzing the static charge/discharge cycle. The average TC for paraffin was 0.214 W/m·K. Adding volcanic ash improved the TC to 19.598 W/m·K. It made the charge/discharge performance of the composite better than that of pure paraffin. The charge rate for the composite ranged from 3.83 ℃/min to 5.12 ℃/min. The highest discharge rate was obtained at 4.21 ℃/min for the composite paraffin50/ash50. The freezing temperature for the composite is influenced by the ash proportion, which can be taken as a suitable approach to adjust the freezing point of paraffin-based thermal energy storage (TES). The detailed results for the characterization and thermal performance evaluation are described thoroughly within the article. The overall result indicates that volcanic ash is applicable for improving the TC and charge/discharge rate of paraffin-based TES.

低温潜热储存(LHS)系统适用于将石蜡作为储存材料。然而，由于热导率(TC)低，它们在实际实施中面临困难。本研究将火山灰作为一种环保、经济的材料来提高石蜡的TC。制备了灰分比分别为10%、30%和50%的石蜡/灰分复合材料。进行了表征，以评估平均TC和性能。通过对静态充放电循环进行热性能评价。石蜡的平均TC为0.214 W/m·K。添加火山灰后，温度提高到19.598 W/m·K。使该复合材料的充放电性能优于纯石蜡。复合材料的充电速率为3.83 ~ 5.12℃/min。石蜡比为50/ash50的复合材料在4.21℃/min时放电速率最高。复合材料的冻结温度受灰分比例的影响，可以作为调整石蜡基储能(TES)凝固点的合适方法。详细的结果，表征和热性能评估的文章中进行了全面的描述。综合结果表明，火山灰适用于提高石蜡基TES的TC和充放电速率。

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引用次数: 11

Ductile fracture toughness of Al 5754-H111 alloy using essential work of fracture method 断口法基本功对Al - 5754-H111合金韧性的影响

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023020

M. Abdellah, Nouby M. Ghazaly, Al-Shimaa H. Kamal, Abo-El Hagag, A. Seleem, G. Abdel-Jaber

The aluminium alloy 5754 H-111 is a high-strength alloy with a remarkable corrosion resistance, particularly to seawater. It is widely used in the aerospace, marine, and automotive industries. In this work, the influence of fracture toughness methods applied to two thin aluminium sheets with different thicknesses (1.8 mm and 5 mm) was analysed. The first method was the essential work of fracture (EWF) method. It was applied at room temperature at a deformation rate of 1 mm/min with a double-edge notched tensile specimen (DENT) to measure the fracture toughness ($ {w}_{e} $) of a material with ductile damage based on the stored energy of the body. The second method was a compact tensile test (CT) to determine the linear elastic fracture toughness. For the EWF, DENTs of 4, 6, 10, 12, and 14 mm were used in the centre section. The EWF values were 273 kJ/m2 and 63 kJ/m2 for the aluminium sheets with thicknesses of 5 mm and 1.8 mm, respectively. The surface energies JIC determined using CT were 34.5 kJ/m2 and 10.6 kJ/m2, respectively, for these sheets. These values are highly similar. Furthermore, the percentage errors of the elastic EWF were 5.8% and 8.4%, respectively, for the two thicknesses. The fractures were of the stress types in which the pits and voids grow in conjunction. In addition, both deep and isolated large dimples were well distributed in the aluminium, which is the main ductile deformation concept.

5754 H-111铝合金是一种高强度合金，具有显著的耐腐蚀性，特别是耐海水腐蚀。它广泛应用于航空航天、船舶和汽车工业。本文对两种不同厚度(1.8 mm和5 mm)的薄铝板进行了断裂韧性分析。第一种方法是压裂基本工作(EWF)方法。在室温下，以1mm /min的变形速率，采用双边缘缺口拉伸试样(DENT)，根据体的储存能量，测量具有延性损伤的材料的断裂韧性($ {w}_{e} $)。第二种方法是紧凑拉伸试验(CT)，以确定线弹性断裂韧性。对于EWF，在中心部分使用4,6,10,12和14mm的凹痕。厚度为5 mm和1.8 mm铝板的EWF值分别为273 kJ/m2和63 kJ/m2。使用CT测定的表面能JIC分别为34.5 kJ/m2和10.6 kJ/m2。这些值非常相似。两种厚度下弹性EWF的误差百分比分别为5.8%和8.4%。裂缝的应力类型为凹坑和空洞同时生长。此外，深韧窝和孤立的大韧窝在铝中均有较好的分布，这是主要的韧性变形概念。

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引用次数: 3

Potassium sodium niobate (KNN) lead-free piezoceramics: A review of phase boundary engineering based on KNN materials 铌酸钾钠无铅压电陶瓷:基于铌酸钾钠材料的相界工程研究进展

Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023045

Hidayah Mohd Ali Piah, Mohd Warikh Abd Rashid, Umar Al-Amani Azlan, Maziati Akmal Mohd Hatta

Lead zirconia titanate (PZT) is the most often used piezoelectric material in various electronic applications like energy harvesters, ultrasonic capacitors and motors. It is true that PZT has a lot of significant drawbacks due to its 60% lead content, despite its outstanding ferroelectric, dielectric and piezoelectric properties which influenced by PZT's morphotropic phase boundary. The recently found potassium sodium niobate (KNN) is one of the most promising candidates for a new lead-free piezoelectric material. For the purpose of providing a resource and shedding light on the future, this paper provides a summary of the historical development of different phase boundaries in KNN materials and provides some guidance on how to achieve piezoelectric activity on par with PZT through a thorough examination and critical analysis of relevant articles by providing insight and perspective of KNN, which consists of detailed evaluation of the design, construction of phase boundaries and engineering for applications.

& lt; abstract>钛酸锆铅(PZT)是各种电子应用中最常用的压电材料，如能量采集器、超声波电容器和电机。诚然，尽管PZT具有优异的铁电、介电和压电性能，但由于其60%的铅含量，PZT具有许多显着的缺点。最近发现的铌酸钾钠(KNN)是一种最有前途的新型无铅压电材料之一。为了提供资源和照亮未来，本文总结了KNN材料中不同相界的历史发展，并通过提供KNN的见解和观点，通过对相关文章的彻底检查和批判性分析，为如何实现与PZT相当的压电活性提供了一些指导，其中包括详细的设计评估;相边界的构建与应用工程。</p>& lt; / abstract>

引用次数: 0

A versatile approach towards development of easy-to-clean transparent nanocoating systems with pronounced anti-static properties for various substrates 一种开发易于清洁的透明纳米涂层系统的通用方法，具有明显的抗静电性能，可用于各种基材

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023008

N. Papadopoulos, P. P. Falara, P. Vourna

Sol-gel is a widely applied method for the development of hydrophobic anti-soiling coatings. Most of them however suffer from serious drawbacks which restrict their generic applicability, especially on surfaces with limited number of hydroxyl groups. This study aims to propose a facile and straightforward strategy for the development of an "one-fits-all" anti-soiling coating with strong adhesion to a variety of hard, non-absorbent surfaces. The structure of the proposed composition is based on a two-component coating system consisting of an organopolysilazane primer and an alkoxysilane topcoat, based on a quaternarized ammonium silane. Morphology and microstructure were systematically studied, while hydrophobicity, adhesion, stability, abrasion and chemical resistance were determined on aluminum and PC substrates. The anti-soiling behavior of the proposed coating system was also evaluated. It was found that the polysilazane primer provided mechanical and chemical robustness regardless of substrate type, while the quaternarized silane offered pronounced easy-to-clean and anti-static attributes. The combination of such attributes within a single sol-gel coating system is highly beneficial for numerous applications.

溶胶-凝胶法是制备疏水防污涂料的一种广泛应用的方法。然而，它们中的大多数都有严重的缺陷，这限制了它们的普遍适用性，特别是在羟基数量有限的表面上。本研究旨在提出一种简单而直接的策略，用于开发一种“一劳永逸”的防污涂层，该涂层具有很强的附着力，可粘附于各种坚硬的非吸收性表面。所提出的组合物的结构基于双组分涂层体系，该体系由基于季铵盐硅烷的有机聚硅烷底漆和烷氧基硅烷面漆组成。系统地研究了铝基材和PC基材的形貌和微观结构，并测定了其疏水性、附着力、稳定性、耐磨性和耐化学性。并对该涂层体系的抗污性能进行了评价。研究发现，无论底物类型如何，聚硅氮烷底漆都具有机械和化学坚固性，而季铵盐硅烷底漆具有明显的易于清洁和抗静电特性。在一个单一的溶胶-凝胶涂层系统中，这些属性的组合对于许多应用都是非常有益的。

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引用次数: 2

Biogenic synthesis, characterization and effects of Mn-CuO composite nanocatalysts on Methylene blue photodegradation and Human erythrocytes Mn-CuO复合纳米催化剂的生物合成、表征及对亚甲基蓝光降解和人红细胞的影响

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023019

Carlos N. Kabengele, Giresse N. Kasiama, E. M. Ngoyi, C. L. Inkoto, Juvenal M. Bete, P. B. Babady, D. Tshibangu, D. Tshilanda, H. M. Kalele, P. Mpiana, K. Ngbolua

Each year more than 150, 000 tons of dyes are released in effluents by industries. These chemicals entities non-biodegradable and toxic can be removed from effluent by metallic nanomaterials. The aqueous extract of Manotes expansa leaves is used as reducing and stabilizing agent in the biogenic synthesis of Mn-CuO nanocomposites. The nanoparticles obtained were characterized using UV-visible spectroscopy, X-ray Diffraction (XRD), X-ray Fluorescence, Dynamic Light Scattering (DSL), and Scanning Electron Microscopy (SEM). The hemotoxicity of biosynthesized nanomaterials was assessed by evaluating their hemolytic activity using erythrocytes as a model system. The photocatalytic activity of Mn-CuO was carried out by photocatalytic degradation of Methylene Blue dye as a model. The results obtained by UV-vis spectroscopy showed a Plasmonic Surface Resonance band at 408 nm. XRD and X-ray fluorescence made it possible to identify the presence of particles of formula Mn0.53Cu0.21O having crystallized in a Hexagonal system (a = 3.1080 Å and c = 5.2020 Å). Spherical morphology and average height 49.34 ± 6.71 nm were determined by SEM and DSL, respectively. The hemolytic activity of biosynthesized nanomaterials revealed that they are not hemotoxic in vitro (% hemolysis 3.2%) and 98.3% of Methylene Blue dye was removed after 120 min under irradiation with solar light in the presence of Mn-CuO nanocomposites.

每年有超过15万吨的染料被工业排放到废水中。这些不可生物降解的有毒化学物质可通过金属纳米材料从废水中去除。以野榄叶水提物为还原剂和稳定剂，生物合成Mn-CuO纳米复合材料。采用紫外可见光谱、x射线衍射(XRD)、x射线荧光、动态光散射(DSL)和扫描电子显微镜(SEM)对纳米颗粒进行了表征。以红细胞为模型系统，通过评价其溶血活性来评价生物合成纳米材料的血液毒性。以光催化降解亚甲基蓝染料为模型，研究了Mn-CuO的光催化活性。紫外-可见光谱分析结果显示在408 nm处存在等离子体表面共振带。XRD和x射线荧光可以识别出在六边形体系(a = 3.1080 Å和c = 5.2020 Å)中结晶的式Mn0.53Cu0.21O颗粒的存在。通过SEM和DSL测定了其球形形貌，平均高度分别为49.34±6.71 nm。生物合成纳米材料的溶血活性表明，它们在体外没有血液毒性(%溶血3.2%)，并且在Mn-CuO纳米复合材料存在下，在太阳光照射120分钟后，98.3%的亚甲基蓝染料被去除。

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引用次数: 1

Study of the structure and mechanical properties of composites used in the oil and gas industry 研究石油和天然气工业中复合材料的结构和力学性能

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023033

P. Rusinov, Z. Blednova, A. Rusinova, G. Kurapov, Maxim Semadeni

This article describes the structure and properties of the developed hybrid composite Hastelloy X (NiCrFeMo)-AlMoNbTaTiZr-cBNSiCNiAlCo. The composite was obtained by the high velocity oxygen fuel spraying (HVOF) method in a protective atmosphere with a subsequent high-temperature thermomechanical treatment. In order to obtain new information about the structure, we studied the metallophysical properties of the composite using electron microscopy and X-ray diffraction analysis, as well as the mechanical properties and phase composition. We studied the influence of high-energy mechanical processing of high-entropic and ceramic materials on the structural-phase state and composite quality. We determined the optimal technological parameters of HVOF in a protective atmosphere, followed by a high-temperature thermomechanical treatment. Additionally, we optimized these parameters to form a hybrid composite providing the highest adhesion and low porosity. Moreover, we investigated the microhardness of the composite layers. On the basis of complex metallophysical studies, we examined the composite formation. In order to determine the endurance limit in comparison to various other composite materials, we carried out cyclic endurance tests of the developed materials.

本文介绍了研制的哈氏合金X (NiCrFeMo)-AlMoNbTaTiZr-cBNSiCNiAlCo复合材料的结构和性能。在保护气氛下采用高速氧燃料喷涂(HVOF)法制备复合材料，并进行高温热处理。为了获得新的结构信息，我们利用电子显微镜和x射线衍射分析研究了复合材料的金相物理性能，以及力学性能和相组成。研究了高熵陶瓷材料的高能机械加工对结构相态和复合材料质量的影响。在保护气氛下确定了HVOF的最佳工艺参数，并对其进行了高温热处理。此外，我们优化了这些参数，形成了具有最高附着力和低孔隙率的混合复合材料。此外，我们还研究了复合材料层的显微硬度。在复杂金属物理研究的基础上，对复合地层进行了鉴定。为了确定与其他各种复合材料相比的耐久性极限，我们对所开发的材料进行了循环耐久性试验。

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引用次数: 0

Scrapping of PEKK-based thermoplastic composites retaining long fibers and their use for compression molded recycled parts 保留长纤维的pek基热塑性复合材料的报废及其用于压缩成型回收部件的用途

Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023044

Alejandro Sandá, Rocío Ruiz, Miguel Ángel Mafé, Jon Ander Sarasua, Antonio González-Jiménez

In this work, a novel method for a more sustainable recycling and cost-efficient manufacturing technique of polyether ketone ketone (PEKK) based thermoplastic composite materials is proposed to recover and reprocess waste and end-of-life materials in the aerospace industry. For the recycling of carbon fiber reinforced thermoplastics (CFrTP), an innovative scrapping process based on mechanical cutting was developed and the properties of the obtained scrap and the recycled panel were analyzed. Thus, a cutting tool was developed for the delamination of the input material so that long fibers can be retained in the resulting scrap. Different processing approaches of material scrapping were evaluated, aiming to obtain manageable scrap that can be subsequently used for a compression molding process. Additionally, an automatic process was evaluated to manage the scrap and perform the corresponding lay-up to manufacture high-quality thermoplastic composite products with recycled materials.

& lt; abstract>在这项工作中，提出了一种更可持续回收和更具成本效益的聚醚酮酮(PEKK)基热塑性复合材料制造技术的新方法，用于回收和再加工航空航天工业中的废物和报废材料。针对碳纤维增强热塑性塑料(CFrTP)的回收利用，开发了一种基于机械切割的新型报废工艺，并对所获得的废料和回收板材的性能进行了分析。因此，开发了一种用于输入材料分层的切割工具，以便在产生的废料中保留长纤维。评估了材料报废的不同处理方法，旨在获得可管理的废料，随后可用于压缩成型工艺。此外，还评估了一个自动化过程，以管理废料并执行相应的铺层，从而用回收材料生产高质量的热塑性复合材料产品。& lt; / abstract>

引用次数: 0

Low-cost piezoelectric sensors and gamma ray attenuation fabricated from novel polymeric nanocomposites 新型聚合物纳米复合材料制备的低成本压电传感器和伽马射线衰减

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023015

Shaimaa Mazhar Mahdi, M. Habeeb

This study looks at the synthesis of innovative PEO/PVA/SrTiO3/NiO nanocomposites for piezoelectric sensors and gamma shielding applications that are low weight, elastic, affordable and have good gamma ray attenuation coefficients. The impact of SrTiO3/NiO on the structural characteristics of the PEO/PVA mixture is investigated. The polymer mixture PEO/PVA received additions of SrTiO3/NiO at concentrations of (0, 1, 2, 3 and 4) weight percent by the casting method. On the top surface of the films PEO/PVA/SrTiO3/NiO NCs, scanning electron microscopy reveals several randomly distributed aggregates or fragments that are consistent and coherent. An optical microscope image collection reveals that the blend*s additive distribution of NPs was homogenous. Gamma ray shielding application results show that the attenuation coefficient of PVA/PEO/SrTiO3/NiO NCs is increased by increasing concentration of SrTiO3/NiO nanoparticles. Radiation protection is another application for it. The pressure sensor application findings of NCs show that, when the applied pressure rises, electrical capacitance (Cp) increase.

本研究着眼于合成用于压电传感器和伽马屏蔽应用的创新型PEO/PVA/SrTiO3/NiO纳米复合材料，该复合材料重量轻，弹性好，价格合理，具有良好的伽马射线衰减系数。研究了SrTiO3/NiO对PEO/PVA混合料结构特性的影响。采用浇铸法，在PEO/PVA聚合物混合物中分别添加质量分数为(0,1,2,3和4)%的SrTiO3/NiO。在PEO/PVA/SrTiO3/NiO NCs薄膜的上表面，扫描电镜显示了一些随机分布的聚集体或碎片，这些聚集体或碎片一致且连贯。光学显微镜采集的图像显示，共混物中NPs的加性分布是均匀的。伽玛射线屏蔽应用结果表明，随着SrTiO3/NiO纳米粒子浓度的增加，PVA/PEO/SrTiO3/NiO纳米粒子的衰减系数增大。防辐射是它的另一个应用。nc压力传感器的应用结果表明，当施加压力增大时，电容(Cp)增大。

引用次数: 14

Welding on C67 steel grade sheet: Influence of the parameters and post welding heat treatment C67钢板焊接工艺参数及焊后热处理的影响

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023025

U. K. Dhar, Md. Farabi Rahman, Mustafa O Ayanoglu, Ahammad Abdullah

In batch operation, most industries require engineers to maintain low hardness on the welded parts, particularly for low carbon steel. This article focuses on tungsten inert gas (TIG) welding performed on 0.90 mm of a C67 grade sheet by varying different welding parameters such as current, velocity, and temperature. Samples were collected from the tool side, mid-wall, and operator side for metallographic and micro-hardness examinations considering various parameters. Without post welding heat treatment (PWHT), the welded parts were quenched at room temperature, while with PWHT the welded parts were kept at 710 ℃ for 99 s after welding, and subsequently, the samples were cooled slowly by air at ambient temperature. An increase in hardness was registered in either the fusion zone or melted zone, with decrements in the heat affected zone (HAZ) for both procedures. When the the welding was performed without PWHT, a martensitic and bainitic microstructure was noticed in the melting zone (MZ) and HAZ, respectively. In contrast, a bainitic microstructure was observed in either the melting or heat affected zone in the welding with PWHT. Metallographic images revealed crack propagation when welding was performed without PWHT. A larger HAZ was noted in the welding sample with PWHT, and hardness was also relatively lower compared the samples without PWHT. There was no significant difference in hardness among the samples taken from tool side, mid-wall, and operator side for both procedures. Finally, the lowest microhardness (265 HV) was found in the MZ when the welding was carried out with PWHT employing a 90 A current and 10 mm/s velocity.

在批量操作中，大多数行业要求工程师在焊接部件上保持低硬度，特别是低碳钢。本文重点研究了通过改变不同的焊接参数，如电流、速度和温度，在0.90 mm的C67级板材上进行钨惰性气体(TIG)焊接。从工具侧、中壁和操作器侧收集样品，考虑各种参数进行金相和显微硬度检查。在不进行焊后热处理的情况下，焊接件在室温下进行淬火;在进行焊后热处理的情况下，焊接件在710℃下保温99 s，然后在常温下用空气缓慢冷却。在熔合区或熔化区都记录了硬度的增加，在热影响区(HAZ)都记录了硬度的降低。无PWHT焊接时，熔化区(MZ)和热区(HAZ)分别出现马氏体和贝氏体组织。在PWHT焊接过程中，熔点和热影响区均出现贝氏体组织。金相图像显示，在没有PWHT的情况下进行焊接时裂纹扩展。有PWHT的焊接试样的热影响区较大，硬度也相对较低。在两种程序中，从工具侧、中壁和操作人员侧采集的样品中，硬度没有显著差异。最后，采用90 a电流和10 mm/s速度的PWHT进行焊接时，MZ的显微硬度最低(265 HV)。

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引用次数: 1

Influence of helium plasma on the structural state of the surface carbide layer of tungsten 氦等离子体对钨表面碳化物层结构状态的影响

IF 1.8 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIMS Materials Science

Pub Date : 2023-01-01 DOI: 10.3934/matersci.2023040

M. Skakov, A. Miniyazov, V. Baklanov, A. Gradoboev, T. Tulenbergenov, I. Sokolov, Yernat Kozhakhmetov, G. Zhanbolatova, I. Kukushkin

This paper presents the results of the experimental studies of the helium plasma interaction with a surface carbide layer of tungsten. The experiments were carried out on a plasma beam installation (PBI) at a constant energy of incoming ions of 2 keV and at a surface temperature of the tungsten carbide layer of ~905 and ~1750 ℃. The local parameters (Te, n0) of the helium plasma were evaluated using the probe method and spectrometric analysis of the plasma composition. The helium plasma irradiated two types of the carbide layer on the tungsten surface, WC and W2C. The mechanisms of changing the tungsten surface morphology in the result of the plasma irradiation have been described. The study of the surface structure of the tungsten samples with a carbide layer of two types (WC, W2C) after the exposure to the helium plasma has revealed two different types of the formation of helium bubbles and changes in the surface morphology. The physical mechanism of the formation of helium bubbles consists in the capture of helium atoms by the thermal vacancies generated at high temperature by the material surface. However, with a significant increase in temperature to 1750 ℃, the formation of the bubbles was no longer observed and the sample surface had a developed coral-like structure with crystallographically oriented grains.

本文介绍了氦等离子体与钨表面碳化物层相互作用的实验研究结果。实验在等离子体束流装置(PBI)上进行，入射离子能量为2kev，碳化钨层表面温度为~905 ~ ~1750℃。利用探针法和等离子体组成的光谱分析对氦等离子体的局部参数Te, n0进行了评价。氦等离子体辐照钨表面WC和W2C两种类型的碳化物层。介绍了等离子体辐照后钨表面形貌变化的机理。通过对两种碳化钨层(WC、W2C)的钨样品在氦等离子体辐照后表面结构的研究，揭示了两种不同类型的氦气泡的形成和表面形貌的变化。氦气泡形成的物理机制是材料表面在高温下产生的热空位捕获氦原子。然而，当温度显著升高到1750℃时，气泡不再形成，样品表面具有发育的珊瑚状结构和晶体取向晶粒。

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引用次数: 0