Titanium nitrides as novel reactants for in-situ synthesis of TiB2-based composites with improved properties

材料科学 微观结构 放电等离子烧结 二硼化钛 穿晶断裂 热导率 复合材料 断裂韧性 陶瓷 烧结 氮化硼 冶金 晶界 晶间断裂
作者
Ji Zou,Huayue Liang,Jingjing Liu,Weimin Wang,Fan Zhang,Wei Ji,Zhengyi Fu
出处
期刊:Journal of Materials Science & Technology [Elsevier BV]
卷期号:145: 48-55 被引量:8
标识
DOI:10.1016/j.jmst.2022.09.021
摘要

A novel in-situ reactive approach based on the reactions among TiN, aluminum and boron has been developed to synthesize TiB2-based composites including TiB2-hBN (TB) and TiB2-hBN-AlN (TBA). Fully dense ceramics with fine-grained microstructure were successfully obtained via spark plasma sintering at 1850 °C/60 MPa/5 min. Microstructure analysis suggests hBN flakes were homogenously distributed in the TiB2 matrix. For AlN, however, they were elongated into plate-like grains during sintering, in which lots of defects in terms of stacking faults and twinning structures were observed. The mechanical and thermophysical properties of as-sintered ceramics were comprehensively investigated and compared. Incorporating AlN significantly improved the flexure strength, hardness, fracture toughness and thermal conductivity of TiB2-hBN ceramics. The electrical conductivity of TB (3.06 × 106 S/m) is larger than that of TBA (2.35 × 106 S/m) at room temperature, but the value (6 × 105 S/m) was lower than that of TBA (6.9 × 105 S/m) at 1173 K. Based on the measurement of electrical and thermal conductivity, electron and phonon contributions to thermal conductivities of TB and TBA were calculated and their temperature dependences were illustrated.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
文安发布了新的文献求助10
刚刚
1秒前
xiaoting应助you采纳,获得10
1秒前
MYY发布了新的文献求助30
2秒前
量子星尘发布了新的文献求助10
2秒前
3秒前
3秒前
3秒前
雪蛤完成签到,获得积分20
4秒前
sxqz完成签到,获得积分20
4秒前
john发布了新的文献求助20
4秒前
QQ发布了新的文献求助10
5秒前
5秒前
狂野萤完成签到,获得积分0
6秒前
pawn发布了新的文献求助10
6秒前
清爽胖飞发布了新的文献求助10
6秒前
多肽专家完成签到,获得积分10
7秒前
8秒前
活泼的花生完成签到,获得积分10
8秒前
CipherSage应助jun采纳,获得10
8秒前
www完成签到 ,获得积分10
8秒前
蒙开心完成签到 ,获得积分10
8秒前
郭聪慧发布了新的文献求助10
9秒前
传奇3应助忧心的不二采纳,获得10
9秒前
huazhangchina发布了新的文献求助30
10秒前
三新荞完成签到,获得积分10
10秒前
elysia发布了新的文献求助10
10秒前
小二郎应助leslie采纳,获得10
11秒前
陈有游发布了新的文献求助10
11秒前
11秒前
思源应助hhchhcmxhf采纳,获得10
11秒前
12秒前
优美元瑶完成签到,获得积分10
12秒前
13秒前
13秒前
14秒前
15秒前
QQ完成签到,获得积分10
15秒前
蓝胖胖蓝完成签到,获得积分10
15秒前
jun完成签到,获得积分10
15秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 360
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3970843
求助须知:如何正确求助?哪些是违规求助? 3515550
关于积分的说明 11178897
捐赠科研通 3250660
什么是DOI,文献DOI怎么找? 1795393
邀请新用户注册赠送积分活动 875828
科研通“疑难数据库(出版商)”最低求助积分说明 805188