Journal of Materials Research and Technology-Jmr&t最新文献_第2页

Study on the material removal mechanism in two-step ultrashort pulse laser polishing of single crystal diamond 单晶金刚石两步超短脉冲激光抛光材料去除机理研究

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.250

Ziyuan Luo , Lijie Wu , Jiadong Lan , Zengquan Hu , Jiabin Lu

Single crystal diamond (SCD) is widely used in high-end optics, semiconductors, and nanostructured devices owing to its exceptional physical and chemical properties. However, its extreme hardness and chemical inertness pose significant challenges for achieving high-quality surface polishing. In this study, a two-step ultrashort pulse laser polishing strategy is proposed, employing a high-energy, low-frequency laser for efficient material removal, followed by a low-energy, high-frequency laser for surface refinement. A key feature of this approach is the correlation between laser ablation depth and the maximum profile height (Rt) inherited from the preceding processing step, which enables the establishment of a physically guided range of process parameters for controlled polishing. The effects of laser parameters on material removal depth, surface roughness, morphology, and chemical composition of SCD were systematically investigated. The results show that the surface roughness Sa is reduced from 165 nm to 33 nm, corresponding to an approximately 80 % reduction. Surface chemical composition analyses indicate that laser-induced oxidation is promoted during the first polishing step and subsequently suppressed during the second step, accompanied by the effective removal of particles and debris. This surface evolution leads to enhanced hydrophilicity, which is beneficial for improving uniformity and efficiency in subsequent chemical mechanical polishing. Raman spectroscopy confirms that no graphitization or residual stress is introduced under optimized conditions, demonstrating the advantage of ultrashort pulse laser processing for SCD. This study clarifies the material removal mechanism in two-step laser polishing of SCD and provides a robust and scalable approach for fabricating high-quality diamond devices.

单晶金刚石（SCD）由于其独特的物理和化学性质，被广泛应用于高端光学、半导体和纳米结构器件中。然而，其极高的硬度和化学惰性对实现高质量的表面抛光提出了重大挑战。在这项研究中，提出了一种两步超短脉冲激光抛光策略，使用高能低频激光进行有效的材料去除，然后使用低能量高频激光进行表面细化。该方法的一个关键特征是激光烧蚀深度与前一个加工步骤继承的最大轮廓高度（Rt）之间的相关性，这使得能够建立物理指导范围的工艺参数来控制抛光。系统研究了激光参数对SCD材料去除深度、表面粗糙度、形貌和化学成分的影响。结果表明，表面粗糙度Sa从165 nm降低到33 nm，降低了约80%。表面化学成分分析表明，激光诱导氧化在第一步抛光过程中被促进，随后在第二步抛光过程中被抑制，同时有效地去除颗粒和碎屑。这种表面演变导致亲水性增强，有利于提高后续化学机械抛光的均匀性和效率。拉曼光谱证实，在优化条件下没有石墨化或残余应力，证明了超短脉冲激光加工SCD的优势。本研究阐明了SCD两步激光抛光中的材料去除机制，为制造高质量的金刚石器件提供了可靠和可扩展的方法。

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引用次数: 0

Long-term microstructural stability and mechanical properties of 9Cr3W3Co heat-resistant steel for ultra-supercritical units 超超临界机组用9Cr3W3Co耐热钢的长期组织稳定性和力学性能

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.223

Fenling Wang , Ai Wang , Zhao Shang , Jiawei Liu , Baigang Feng , Gang Liu , Juntao Zou

9Cr3W3Co heat-resistant steel has become a widely used material for key components in advanced ultra-supercritical thermal power units due to its excellent high-temperature properties and corrosion resistance. In this study, the steel was subjected to aging treatment at different temperatures and times, then the microstructure and mechanical properties were investigated. After long-term aging, Laves phase forms along martensite lath boundaries and prior austenite boundaries. With increasing aging time and temperature, the width of martensite lath and the size of M₂₃C₆ carbides increase. The Laves phase particles grow from 0.210 μm to 0.351 μm, and their morphology changes from regular short-rod shapes to irregular ones. The coarsening rate of Laves phase reaches a maximum at 630 °C. Moreover, hardness exhibits a slight decrease with increasing aging temperature and time. Plasticity, strength, and the growth and aggregation of precipitates all influence the impact properties. After 20,000 h of aging, both yield strength and elongation remain at relatively high levels, with impact energy values all exceeding 20 J. After 30,000 h of aging, the coarsening of precipitates has a more pronounced effect on impact toughness. In summary, 9Cr3W3Co heat-resistant steel maintains high stabilities of microstructure and property after long-term exposure at high temperature.

9Cr3W3Co耐热钢因其优异的高温性能和耐腐蚀性，已成为先进超超临界火电机组关键部件的广泛使用材料。在本研究中，对钢进行了不同温度和时间的时效处理，并对其组织和力学性能进行了研究。长期时效后，沿马氏体板条边界和先生奥氏体边界形成Laves相。随着时效时间和时效温度的增加，马氏体板条宽度增大，M23C6碳化物尺寸增大。Laves相颗粒从0.210 μm长大到0.351 μm，形貌由规则的短棒状变为不规则的短棒状。Laves相的粗化速率在630℃时达到最大值。随着时效温度和时效时间的增加，硬度略有下降。塑性、强度、析出物的生长和聚集都会影响冲击性能。时效20000 h后，屈服强度和伸长率仍处于较高水平，冲击能均超过20j。时效30000 h后，析出相粗化对冲击韧性的影响更为明显。综上所述，9Cr3W3Co耐热钢在长期高温下保持了较高的组织和性能稳定性。

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引用次数: 0

Characterization of steel industry co-products and recycling pathways 钢铁工业副产品的表征和回收途径

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.150

Marcelo Barcellos Reis , Raquel Amendro Faria , Guilherme de Souza Reis , Elaine Aparecida Santos Carvalho , Geovana Carla Girondi Delaqua , Victor Hugo Santos , Afonso Rangel Garcez de Azevedo , Carlos Maurício Fontes Vieira

The steel industry generates large volumes of fine co-products, whose valorization requires evidence-based process decisions. This study integrates various characterization techniques to translate laboratory data into practical recycling routes for seven co-products of this industrial activity. Our main contribution is a composition-structure-reactivity (CSR) correlation model for KR powder, which defines processability windows, indicating when to prioritize metallurgical return (binder/Fe input), when to opt for cementitious/carbonate routes (alkaline/porous streams), and when to condition use through pretreatments (desalination, dehumidification, ignition loss control). Based on this logic, we present a classified recycling structure that maps property profiles for four priority routes: agglomeration (briquettes/pellets) for Fe/C-rich fractions; thermal routes with selective volatilization of Zn/Pb in zinc-containing dusts; selective hydrometallurgy when speciation requires Zn/Pb removal; and cementitious/accelerated carbonation solutions for alkaline streams (FGD/KR). We also consolidated decision rules through measurable thresholds (Zn, Cl⁻, moisture/LOI, BET, PSD) and a standardized reporting scheme for comparison between plants and direct use in life cycle assessments (LCA). The results demonstrate high recycling potential, with environmental benefits (e.g., CO₂ capture and utilization in alkaline streams), technical feasibility (internal return, adsorbents, cementitious additions), and attention to operational and regulatory constraints (Zn/Pb/Cl⁻ contents, dust emissions). The work provides a practical guide for route selection, reducing implementation uncertainties and strengthening circularity in the modern steel industry.

钢铁行业生产了大量优质的副产品，其价值增值需要基于证据的工艺决策。本研究整合了各种表征技术，将实验室数据转化为该工业活动的七个副产品的实际回收路线。我们的主要贡献是KR粉的成分-结构-反应性（CSR）相关模型，该模型定义了可加工性窗口，表明何时优先考虑冶金回收（粘结剂/铁输入），何时选择胶凝/碳酸盐路线（碱性/多孔流），以及何时通过预处理（脱盐、除湿、点火损失控制）调整使用条件。基于这一逻辑，我们提出了一个分类回收结构，该结构映射了四个优先路线的属性概况：富铁/ c馏分的团聚（压块/颗粒）；含锌粉尘中Zn/Pb选择性挥发的热路径；当形态需要去除锌/铅时，选择湿法冶金；以及用于碱性流（FGD/KR）的胶凝/加速碳酸化溶液。我们还通过可测量的阈值（Zn, Cl−,moisture/LOI， BET， PSD）和用于植物与生命周期评估（LCA）直接使用之间比较的标准化报告方案巩固了决策规则。结果表明，该方法具有很高的回收潜力，具有环境效益（如CO2在碱性流中的捕获和利用）、技术可行性（内部回收、吸附剂、胶凝剂添加）以及对操作和监管约束（Zn/Pb/Cl−含量、粉尘排放）的关注。为现代钢铁工业的路线选择、减少实施的不确定性、加强循环性提供了实践指导。

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引用次数: 0

Effect of initial base metal microstructure on weld hot cracking susceptibilities of Alloy 718 forgings 初始母材组织对718合金锻件焊缝热裂敏感性的影响

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.208

Seolbin Jeong , Sieun Lim , Gitae Park , Sangwoo Song , Dongyi Seo , Ilguk Jo , Yongjoon Kang

The effect of the base metal (BM) microstructure on the hot cracking susceptibilities of Alloy 718 during welding was investigated. A forged ring of Alloy 718 was subjected to a series of heat treatments to produce distinct initial BM microstructures with variations in grain size and precipitate distribution. The cracking susceptibilities in the fusion zone (FZ) and heat-affected zone (HAZ) were quantitatively assessed using Varestraint tests. The results revealed that the FZ cracking susceptibility increased with increasing BM grain size, owing to epitaxial grain growth during solidification that promoted the formation of coarser grains in the FZ. In the HAZ, cracking susceptibility was strongly influenced by Nb-rich precipitates formed during solution treatment, such as Laves and grain boundary δ phases, which promoted constitutional liquation and segregation-induced liquation along grain boundaries, respectively.

研究了母材组织对718合金焊接热裂敏感性的影响。对718合金锻件进行一系列热处理，形成不同晶粒尺寸和析出相分布的初始BM组织。采用varestrain试验定量评价了熔合区（FZ）和热影响区（HAZ）的开裂敏感性。结果表明：随着BM晶粒尺寸的增大，FZ的开裂敏感性增大，这是由于凝固过程中外延晶粒的生长促进了FZ中粗晶的形成。在热影响区，固溶过程中形成的富铌析出相（如Laves相和晶界δ相）对裂纹敏感性有很大影响，它们分别促进了晶界的本构溶解度和偏析诱导溶解度。

引用次数: 0

Effect of laser shock peening on the mechanical properties and cutting performance of TiSiN/TiAlN nano-multilayer coating 激光冲击强化对TiSiN/TiAlN纳米多层涂层力学性能和切削性能的影响

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.164

Xuming Zha , Yunwu Guo , Linqing Xi , Jiasheng Li , Tao Zhang , Feng Jiang

Coatings are widely used in the cutting tools due to their high hardness and the excellent wear resistance. However, under the challenge of extreme working environments, it is of great significance to enhance the mechanical properties and adhesion strength of coating/substrate system. In this study, the nanosecond pulse laser was employed to achieve the strengthening treatment of coated tools. The effects of different peak pressure of laser shock wave on the mechanical properties of the coatings were systematically investigated. The enhancement effect of coated tool was evaluated through nanoindentation tests, scratch tests and cutting experiments, while the underlying strengthening mechanisms of coating was analyzed. The results demonstrated that the lattice distortion and increased dislocation density within the coating structure could be attained after the laser shock peening (LSP) treatment, which contributed to the formation of residual compressive stress and the improvement of mechanical properties of coatings. Additionally, the adhesion strength of coating/substrate interface was improved after LSP treatment. The cutting performance of coated tools with untreated and LSP treated was evaluated after turning Ti60 titanium alloy. The flank wear value of coated tool with LSP treated was decreased. However, the mismatch of coating/substrate interface may occur under the condition of excessive LSP treatment, which could reduce the service performance of the coated tool. This study provided effective guidance into the strengthening mechanisms of coated tools by LSP treatment and the optimal process parameters could be obtained from the systematic research of the LSP experiments and cutting experiments.

涂层由于其高硬度和优异的耐磨性，在刀具中得到了广泛的应用。然而，在极端工作环境的挑战下，提高涂层/基材体系的力学性能和粘接强度具有重要意义。本研究采用纳秒脉冲激光对涂层刀具进行强化处理。系统研究了不同激光冲击波峰值压力对涂层力学性能的影响。通过纳米压痕试验、划痕试验和切削试验评价涂层刀具的强化效果，并分析涂层的强化机理。结果表明：激光冲击强化（LSP）后，涂层组织中出现了晶格畸变，位错密度增大，有利于残余压应力的形成，提高了涂层的力学性能；此外，LSP处理后涂层/基体界面的结合强度也有所提高。对未处理和LSP处理的涂层刀具车削Ti60钛合金后的切削性能进行了评价。经过LSP处理的涂层刀具刃口磨损值有所降低。然而，在LSP处理过量的情况下，涂层/基材界面可能会出现不匹配，从而降低涂层刀具的使用性能。该研究为研究涂层刀具的LSP强化机理提供了有效的指导，并通过对LSP实验和切削实验的系统研究获得了最优工艺参数。

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引用次数: 0

Quasi-static penetration property of laminates with hybrid cores having interlocking skeletons formed by crocheting the twisted 316 L/Kevlar fiber ropes 316l /凯夫拉纤维绞绳钩针编织骨架互锁复合芯层合板的准静态渗透性能

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.144

Fei Wu , Xinhao Zhong , Fuqiang Zhou , Yi-hao Hong , Shun-qiu Zhao , Zheng-rong Zhang

The present work aimed to investigate the quasi-static properties and energy absorption of fibre-metal laminates (FMLs) with novel hybrid cores by finite element analysis and experiments. The cores were formed by crocheting continuous fiber ropes twisted from 49 ultra-fine soft stainless steel fibers or 1000 Kevlar fibers, which are mesh fabrics with interwoven and interlocked knots, and rope skeletons linking the knots. Results indicated that while flexible cores have lower peak resistance, they offer high ductility and deformation recovery. Although the core's energy absorption is low, when combined with metal face sheets, a significant composite effect emerges, contributing 40–50 % to total energy absorption. The specific energy absorption per unit mass increases across all these types of FMLs compared to metal face sheets, with double Kevlar cores demonstrating the highest specific energy absorption. The FMLs studied in this paper have considerable application potential in the field of modern protective structures that achieve both protective performance and lightweight.

本文旨在通过有限元分析和实验研究新型混合芯金属纤维层合板的准静态性能和吸能特性。核心是由49根超细的柔软不锈钢纤维或1000根凯夫拉纤维编织而成的连续纤维绳，这些纤维绳是交织和互锁的网状织物，并将绳骨架连接在一起。结果表明，柔性岩芯具有较低的峰值阻力，但具有较高的延展性和变形恢复能力。虽然磁芯的能量吸收较低，但当与金属面板结合时，会出现明显的复合效应，占总能量吸收的40 - 50%。与金属面板相比，所有这些类型的fml的单位质量比能量吸收量都有所增加，双凯夫拉芯的比能量吸收量最高。本文研究的FMLs在实现防护性能和轻量化的现代防护结构领域具有相当大的应用潜力。

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引用次数: 0

Damage evolution in EB-PVD thermal barrier coatings under coupled thermal shock and CMAS + sea salt corrosion: a real-time acoustic emission study 热冲击与CMAS +海盐腐蚀耦合作用下EB-PVD热障涂层损伤演化：实时声发射研究

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.183

Guolin Liu , Wang Zhu , Sai Liu , Jinwei Guo , Zengsheng Ma

Thermal barrier coatings (TBCs) in marine environments face severe degradation from coupled thermal shock and CMAS + sea salt corrosion. This study utilizes real-time acoustic emission (AE) monitoring to investigate the damage evolution and failure of electron beam physical vapor deposited (EB-PVD) TBCs under these conditions. Using self-organizing map (SOM) neural networks, agglomerative hierarchical and K-means clustering, four characteristic AE damage modes are identified by peak frequency: substrate deformation (10–80 kHz), surface vertical cracks (90–235 kHz), sliding interface cracks (246–370 kHz), and opening interface cracks (378–500 kHz). AE signals concentrate in heating and cooling stages. Significant AE events from surface vertical cracks, opening and sliding interface cracks indicate their rapid propagation and dominance throughout the cooling stage, confirming that coating failure typically occurs during cooling. Sliding interface cracks are the dominant mode in TBCs, followed by surface vertical cracks and opening interface cracks during thermal cycles. The mechanism involves CMAS/sea salt permeation causing interfacial corrosion and damage, where residual stresses drive rapid propagation of sliding and opening interfacial cracks, leading to spallation.

海洋环境中的热障涂层在热冲击和CMAS +海盐腐蚀的双重作用下面临着严重的降解问题。本研究利用实时声发射（AE）监测来研究在这些条件下电子束物理气相沉积（EB-PVD） tbc的损伤演变和失效。采用自组织映射（SOM）神经网络、聚类分层和K-means聚类方法，根据峰值频率识别出4种声发射损伤模式：基底变形（10-80 kHz）、表面垂直裂缝（90-235 kHz）、滑动界面裂缝（246-370 kHz）和打开界面裂缝（378-500 kHz）。声发射信号集中在加热和冷却阶段。表面垂直裂纹、张开裂纹和滑动界面裂纹的声发射事件表明，它们在冷却过程中迅速扩展并占据主导地位，证实了涂层破坏通常发生在冷却过程中。热循环过程中，界面裂缝以滑动裂缝为主，表面垂直裂缝次之，界面张开裂缝次之。其机制涉及CMAS/海盐渗透导致界面腐蚀和破坏，残余应力驱动滑动和打开界面裂纹的快速扩展，导致剥落。

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引用次数: 0

Assessing the solute drag of scrap residual elements of Sn and Cu in austenite 奥氏体中锡、铜残馀元素的溶质阻力评定

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.155

Jiaqi Duan, Yulin Ju, Pedram Dastur, Carl Slater, Martin Strangwood, Claire Davis

Different levels of the scrap residual elements Sn (0.05–0.20 wt %) and Cu (0.15–0.90 wt %) were added individually to a plain C–Mn steel, and their effects on austenite grain growth were investigated in the temperature range of 900 °C–1150 °C. Grain sizes under each condition were measured using optical microscopy (OM). The results show both Sn and Cu suppress grain growth compared with the base alloy; with Sn being more effective. A comparison of the grain size distributions in samples with similar average grain sizes but different Sn and Cu levels indicates that solutes do not significantly alter the statistical characteristics of the grain population during grain growth. Sn segregation along austenite grain boundaries was clearly observed using Scanning Transmission Electron Microscopy (STEM)/energy dispersive X-ray spectroscopy (EDS), while Cu segregation was not evident, after heat treatment at 950 °C for 40 min. The solute drag model was applied to derive the segregation energy of Sn and Cu. The fitted values varied with temperatures, for Sn, from −0.31 eV to −0.52 eV and for Cu from −0.014 eV to −0.060 eV. These segregation energies were applied to predict the potential retardation of grain boundary motion in the presence of solutes.

在900℃~ 1150℃的温度范围内，分别向C - mn钢中加入不同水平的残余元素Sn （0.05 ~ 0.20 wt %）和Cu (0.15 ~ 0.90 wt %)，研究了它们对奥氏体晶粒生长的影响。用光学显微镜（OM）测量了各条件下的晶粒尺寸。结果表明：与基体合金相比，Sn和Cu均能抑制晶粒长大；Sn更有效。对比平均晶粒尺寸相似但Sn和Cu含量不同的样品的晶粒尺寸分布表明，溶质对晶粒生长过程中晶粒数量的统计特征没有显著影响。在950℃热处理40 min后，通过扫描透射电子显微镜（STEM）和能量色散x射线能谱（EDS）观察到锡沿奥氏体晶界明显偏析，而铜偏析不明显。采用溶质阻力模型推导了锡和铜的偏析能。随着温度的变化，Sn的拟合值在−0.31 eV到−0.52 eV之间，Cu的拟合值在−0.014 eV到−0.060 eV之间。应用这些偏析能预测溶质存在时晶界运动的潜在阻滞。

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引用次数: 0

Some clouds in a bright sky 一些云在明亮的天空

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.192

L.E. Murr, S.N. Monteiro, Marc A. Meyers

引用次数: 0

Preparation of carbon/silicon carbide composites based on selective laser sintering/reaction melt infiltration and its theoretical modeling calculations 基于选择性激光烧结/反应熔体渗透的碳/碳化硅复合材料的制备及其理论建模计算

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t

Pub Date : 2026-01-01 DOI: 10.1016/j.jmrt.2025.12.142

Yihao Chen , Haihua Wu , Hualong Zhang , Aodong Gao , Liang Gong , Shiyu Zeng , Siwei Li , Mingmin Liu , Qian Li

In this study, porous carbon preforms with tailored pore structures were fabricated by selective laser sintering.Carbon/Silicon Carbide composites with improved overall performance were subsequently produced by infiltrating the porous preforms with liquid silicon, forming additional Silicon Carbide via in-situ reaction. Medium-carbon microspheres were introduced to control the porosity and enhance infiltration efficiency. The effects of natural flake-graphite addition on the mechanical properties, microstructure, and thermal conductivity of the composites were systematically investigated. When used as a slow-release carbon source, flake graphite delayed reaction-channel closure, promoting further Silicon Carbide formation and improving infiltration. Additionally, graphite acted as a thermally conductive filler, increasing the composite thermal conductivity. A maximum thermal conductivity of 75.86W/(m·K) was achieved with 50 wt% flake graphite. Incorporating 40 wt% flake graphite effectively mitigated the detrimental influence of residual free silicon, yielding the highest density (2.58 g cm⁻³) and flexural strength (173.4 MPa). By adjusting the carbon content and employing selective laser sintering, graphite-based preforms with controlled porosity and tailored properties were obtained, enabling the fabrication of high-performance Carbon/Silicon Carbide composites.Theoretical calculations and predictive modeling were performed in parallel; the models and equations were iteratively refined to establish a reliable property-prediction framework for the developed material system.

在本研究中，采用选择性激光烧结制备了具有定制孔结构的多孔碳预制体。将液态硅渗透到多孔预铸体中，通过原位反应形成额外的碳化硅，从而制备出整体性能得到改善的碳/碳化硅复合材料。引入中碳微球控制孔隙度，提高入渗效率。系统研究了天然片状石墨对复合材料力学性能、显微组织和导热性能的影响。当作为缓释碳源时，片状石墨延迟了反应通道的关闭，促进了碳化硅的进一步形成，改善了渗透。此外，石墨作为导热填料，提高了复合材料的导热性。50wt %片状石墨的最大导热系数为75.86W/（m·K）。加入40 wt%的片状石墨有效地减轻了残余游离硅的有害影响，获得了最高的密度（2.58 g cm−3）和弯曲强度（173.4 MPa）。通过调整碳含量并采用选择性激光烧结，可以获得具有可控孔隙率和定制性能的石墨基预制体，从而制造出高性能的碳/碳化硅复合材料。理论计算与预测建模并行进行；通过对模型和方程的迭代改进，为开发的材料系统建立了可靠的性能预测框架。

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引用次数: 0