Effects of initial diamond particle size on the comprehensive mechanical properties of PDC

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

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.476

Xueqi Wang , Jianbo Tu , Baochang Liu

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Abstract

Polycrystalline diamond compacts (PDCs) with eight different diamond particle sizes were prepared with the Cubic-Anvil Press under high pressure and high temperature (HPHT, 7.7 GPa and 1500 °C). By the microscopic characterization, there were significantly AGG phenomena in fine-grained PDCs (less than 4 μm), due to the high carbon solubility caused by particle size effect. The mechanical and thermal performance of the fabricated PDC samples were evaluated by hardness, abrasion, toughness and thermal expansion tests. The results showed that the finer of the initial diamond grain size, the higher of the abrasion resistance, and the coarser the size, the higher of the impact toughness. A variety of micro characterization analyses were carried out to understand the effect of diamond grain size on the performance of PDC. The diamond grain size played a more dominant role in the performance of PDCs than cobalt content. The thickness of cobalt transition layer and the difference of residual stress near the interface between polycrystalline diamond table and cemented carbide substrate were the main factors affecting the impact toughness of PDCs.

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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.