Synthesis of TiC0.5–Al and Effect of Sintering Temperature on Mechanical Properties of PcBN Composites

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Superhard Materials Pub Date : 2023-05-09 DOI:10.3103/S1063457623020041

Xixi Hu, Ailing Sun, Yang Liu, Shenglin Zhong, Peicheng Mo, Yi Wu

{"title":"Synthesis of TiC0.5–Al and Effect of Sintering Temperature on Mechanical Properties of PcBN Composites","authors":"Xixi Hu, Ailing Sun, Yang Liu, Shenglin Zhong, Peicheng Mo, Yi Wu","doi":"10.3103/S1063457623020041","DOIUrl":null,"url":null,"abstract":"Polycrystalline cubic boron nitride (PcBN) with excellent mechanical properties was sintered by using high activity TiC0.5 and metal aluminum as binder at high temperature and pressure. The effects of sintering temperature on phase composition, microstructure, relative density and mechanical properties of PcBN composites were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy spectrum analysis. The results show that, under the conditions of low reaction temperature of 1400°C and holding time of 10 min, excellent composite properties of PcBN sintered material were obtained. The reinforced phases such as Ti(C, N), TiB2 and AlN were stably presented in the sintered body. To be specific, the microhardness, flexural strength and fracture toughness of the sintered body first increased and then decreased with the increasing sintering temperature, as well as posessing a high fracture toughness, which were 39.74 GPa, 1217 MPa and 8.78 MPa m1/2, respectively.","PeriodicalId":670,"journal":{"name":"Journal of Superhard Materials","volume":"45 2","pages":"131 - 139"},"PeriodicalIF":1.2000,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Superhard Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.3103/S1063457623020041","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Polycrystalline cubic boron nitride (PcBN) with excellent mechanical properties was sintered by using high activity TiC_0.5 and metal aluminum as binder at high temperature and pressure. The effects of sintering temperature on phase composition, microstructure, relative density and mechanical properties of PcBN composites were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy spectrum analysis. The results show that, under the conditions of low reaction temperature of 1400°C and holding time of 10 min, excellent composite properties of PcBN sintered material were obtained. The reinforced phases such as Ti(C, N), TiB₂ and AlN were stably presented in the sintered body. To be specific, the microhardness, flexural strength and fracture toughness of the sintered body first increased and then decreased with the increasing sintering temperature, as well as posessing a high fracture toughness, which were 39.74 GPa, 1217 MPa and 8.78 MPa m^1/2, respectively.

Abstract Image

查看原文本刊更多论文

TiC0.5-Al的合成及烧结温度对PcBN复合材料力学性能的影响

以高活性TiC0.5和金属铝为粘结剂，高温高压烧结得到了力学性能优异的立方氮化硼多晶(PcBN)。采用x射线衍射(XRD)、扫描电镜(SEM)和能谱分析研究了烧结温度对PcBN复合材料相组成、微观结构、相对密度和力学性能的影响。结果表明，在反应温度为1400℃、保温时间为10 min的条件下，PcBN烧结材料获得了优异的复合性能。烧结体中稳定存在Ti(C, N)、TiB2和AlN等增强相。随着烧结温度的升高，烧结体的显微硬度、抗弯强度和断裂韧性呈先升高后降低的趋势，具有较高的断裂韧性，分别为39.74 GPa、1217 MPa和8.78 MPa m1/2。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Superhard Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

66.70%

发文量

审稿时长

2 months

期刊介绍： Journal of Superhard Materials presents up-to-date results of basic and applied research on production, properties, and applications of superhard materials and related tools. It publishes the results of fundamental research on physicochemical processes of forming and growth of single-crystal, polycrystalline, and dispersed materials, diamond and diamond-like films; developments of methods for spontaneous and controlled synthesis of superhard materials and methods for static, explosive and epitaxial synthesis. The focus of the journal is large single crystals of synthetic diamonds; elite grinding powders and micron powders of synthetic diamonds and cubic boron nitride; polycrystalline and composite superhard materials based on diamond and cubic boron nitride; diamond and carbide tools for highly efficient metal-working, boring, stone-working, coal mining and geological exploration; articles of ceramic; polishing pastes for high-precision optics; precision lathes for diamond turning; technologies of precise machining of metals, glass, and ceramics. The journal covers all fundamental and technological aspects of synthesis, characterization, properties, devices and applications of these materials. The journal welcomes manuscripts from all countries in the English language.