Low temperature synthesis and spark plasma sintering of a boron carbide with a low residual carbon content

被引：9

作者：

Kenny, Jonathan ^{[1
]}

McDonald, Nikkia ^{[1
]}

Binner, Jon ^{[1
]}

Chang, Isaac Tsz Hong ^{[2
]}

Marinel, Sylvain ^{[3
]}

机构：

[1] Univ Birmingham, Dept Met & Mat, Elms Rd, Edgbaston B15 2TT, W Midlands, England

[2] Brunel Univ London, LiME Training Ctr, Kingston Lane, Uxbridge UB8 3PH, Middx, England

[3] Normandy Univ, ENSICAEN, Blvd Marechal Juin, F-14000 Caen, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2022年 / 42卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

Boron carbide; Low temperature synthesis; Spark plasma sintering (SPS); MECHANICAL-PROPERTIES; CARBOTHERMIC REDUCTION; FRACTURE-TOUGHNESS; RAMAN-SPECTROSCOPY; BORIC-ACID; DENSIFICATION; B4C; MICROSTRUCTURE; BEHAVIOR; POWDER;

D O I：

10.1016/j.jeurceramsoc.2021.10.012

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using spark plasma sintering (SPS), >98.5 % dense boron carbide (B4C) samples were made from commercially available and lab-synthesised powders made via a low temperature synthesis (LTS) process. The work showed that the LTS powder can be produced in batches of tens to hundreds of grams whilst maintaining a high purity material with lower levels of residual free carbon (20.6-21.3 wt.% C) than commercially available samples (22.4 wt.% C). The LTS material was seen to exhibit higher hardness values (37.8 GPa) than the commercial grade material (32.5 GPa) despite featuring a coarser average grain size (10.8 mu m and 2.4 mu m respectively). This is largely thought to be due to the influence of ZrO2 and AlB2 impurities introduced to the material during micronising milling of the powder after synthesis, as opposed to the influence of the materials lower carbon content.

引用

页码：383 / 391

页数：9

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