Effect of Si3N4 powder modified by sebacic acid on slurry properties and oxygen content of ceramics

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-04-01 DOI:10.1016/j.ceramint.2025.01.172

Ziyu Liu , Haolin Dong , Huangyang Luo , Xiaole Yang , Peng Liu , Yuanbing Li , Xianfeng Yang

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引用次数: 0

Abstract

The silicon nitride (Si₃N₄) powders were modified using sebacic acid for aqueous tape casting to fabricate Si₃N₄ ceramic substrates. The effects of the powder modification on the chemical composition, slurry properties and the oxygen content of ceramics were investigated systematically. New organic groups from sebacic acid appear on Si₃N₄ powder surfaces by graft or adsorption and the dehydration-condensation reaction is weak. The slurry from the modified Si₃N₄ powder with more sebacic acid possesses a lower ΔpH, higher absolute value of zeta potential, stronger absorbance and lower viscosity, improving the hydrolysis resistance, dispersibility, stability and solid content successfully of aqueous suspensions. Si₃N₄ ceramic substrates fabricated at 1850 °C under nitrogen atmosphere from the corresponding aqueous casting tapes have the lowest oxygen content of 0.13 wt%, demonstrating that the modification of Si₃N₄ powders by sebacic acid shows great potential for the aqueous tape casting to fabricate Si₃N₄ ceramic substrates.

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癸二酸改性氮化硅粉体对陶瓷浆料性能和氧含量的影响

采用己二酸对氮化硅（Si3N4）粉体进行改性，制备了氮化硅陶瓷衬底。系统地研究了粉体改性对陶瓷化学成分、料浆性能和氧含量的影响。癸二酸通过接枝或吸附在氮化硅粉体表面产生新的有机基团，脱水缩合反应较弱。添加了更多癸二酸的氮化硅粉体改性后的浆液ΔpH值更低，zeta电位绝对值更高，吸光度更强，粘度更低，成功地提高了水悬浮液的抗水解性、分散性、稳定性和固含量。在1850℃氮气气氛下制备的氮化硅陶瓷基板含氧量最低，为0.13 wt%，表明用己二酸对氮化硅粉末进行改性，表明了氮化硅基板制备氮化硅陶瓷基板的巨大潜力。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.