(Ti, Zr, Nb, Ta, Mo)B–(Ti, Zr, Nb, Ta, Mo)C Based Multiphase High-Entropy Ultra-High Temeperature Ceramic Prepared by Reactive Spark Plasma Sintering

LIU Yang; ZHONG Zhihao; GUO Weiming; LIN Huatai

doi:10.16080/j.issn1671-833x.2025.03.117

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(Ti, Zr, Nb, Ta, Mo)B–(Ti, Zr, Nb, Ta, Mo)C Based Multiphase High-Entropy Ultra-High Temeperature Ceramic Prepared by Reactive Spark Plasma Sintering

更新时间：2025-10-30

- (Ti, Zr, Nb, Ta, Mo)B–(Ti, Zr, Nb, Ta, Mo)C Based Multiphase High-Entropy Ultra-High Temeperature Ceramic Prepared by Reactive Spark Plasma Sintering
- Aeronautical Manufacturing Technology Vol. 68, Issue 3, Pages: 117-124(2025)
- 作者机构：
  
  广东工业大学,广州,510006
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2025.03.117
  CLC：
- Published：2025
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刘洋，钟智浩，郭伟明，林华泰. 反应等离子烧结制备（Ti，Zr，Nb，Ta，Mo）B2–（Ti，Zr，Nb，Ta，Mo）C基复相高熵超高温陶瓷[J]. 航空制造技术, 2025, 68(3): 117-124.

LIU Yang, ZHONG Zhihao, GUO Weiming, LIN Huatai. (Ti, Zr, Nb, Ta, Mo)B2–(Ti, Zr, Nb, Ta, Mo)C Based Multiphase High-Entropy Ultra-High Temeperature Ceramic Prepared by Reactive Spark Plasma Sintering[J]. Aeronautical Manufacturing Technology, 2025, 68(3): 117-124.
刘洋，钟智浩，郭伟明，林华泰. 反应等离子烧结制备（Ti，Zr，Nb，Ta，Mo）B2–（Ti，Zr，Nb，Ta，Mo）C基复相高熵超高温陶瓷[J]. 航空制造技术, 2025, 68(3): 117-124. DOI： 10.16080/j.issn1671-833x.2025.03.117.

LIU Yang, ZHONG Zhihao, GUO Weiming, LIN Huatai. (Ti, Zr, Nb, Ta, Mo)B2–(Ti, Zr, Nb, Ta, Mo)C Based Multiphase High-Entropy Ultra-High Temeperature Ceramic Prepared by Reactive Spark Plasma Sintering[J]. Aeronautical Manufacturing Technology, 2025, 68(3): 117-124. DOI： 10.16080/j.issn1671-833x.2025.03.117.

摘要

为了进一步改善高熵碳化物和高熵硼化物陶瓷的力学性能，在高熵碳化物（Ti，Zr，Nb，Ta，Mo）C中引入SiB

作为硼源和硅源，通过反应等离子烧结在2000 ℃下制备了（Ti，Zr，Nb，Ta，Mo）B

–（Ti，Zr，Nb，Ta，Mo）C基复相陶瓷。研究发现，在高温下SiB

与（Ti，Zr，Nb，Ta，Mo）C发生化学反应，生成了高熵硼化物（Ti，Zr，Nb，Ta，Mo）B

、SiC 和C。添加SiB

制备的（Ti，Zr，Nb，Ta，Mo）B

–（Ti，Zr，Nb，Ta，Mo）C基复相陶瓷的致密度可达98.7%~99.7%。添加体积分数10%~15% SiB

制备的复相陶瓷中高熵晶粒的尺寸为0.84~0.92 μm，显著小于纯（Ti，Zr，Nb，Ta，Mo）C 陶瓷的晶粒尺寸（约3.19 μm）。由于细晶强化作用，（Ti，Zr，Nb，Ta，Mo）B

–（Ti，Zr，Nb，Ta，Mo）C基复相陶瓷的硬度（23.54~24.93 GPa）高于纯（Ti，Zr，Nb，Ta，Mo）C 陶瓷（约23.22 GPa）。同时，（Ti，Zr，Nb，Ta，Mo）B

–（Ti，Zr，Nb，Ta，Mo）C基复相陶瓷的断裂韧性随SiB

添加量的增加而提高，最高可达5.07 MPa·m

1/2

，显著高于纯（Ti，Zr，Nb，Ta，Mo）C陶瓷（约3.02 MPa·m

1/2

）。以（Ti，Zr，Nb，Ta，Mo）C和SiB

为原料，通过反应等离子烧结，可以制备具有较细晶粒结构和优异力学性能的（Ti，Zr，Nb，Ta，Mo）B

–（Ti，Zr，Nb，Ta，Mo）C 基复相高熵超高温陶瓷。

Abstract

To further improve the mechanical properties of high-entropy carbides and high-entropy borides ceramic

in this study SiB

was introduc

ed as a boron and silicon source into high-entropy carbide (Ti

Mo)C

and (Ti

Mo)B

–(Ti

Mo)C based composites were synthesized via reactive spark plasma sintering at 2000 ℃. Research findings indicate that SiB

reacts with (Ti

Mo)C at high temperatures to form high-entropy boride (Ti

Mo)B

SiC and C phases. The densification of (Ti

Mo)B

–(Ti

Mo)C based composites prepared with SiB

addition reaches 98.7%–99.7%. The grain size of high-entropy phases in composite ceramics with 10%–15% SiB

addition (volume fraction) is 0.84–0.92 μm

which is smaller than that of pure (Ti

Mo)C ceramics (~3.19 μm). Due to the fine grain strengthening

the hardness of (Ti

Mo)B

–(Ti

Mo)C based composites (23.54–24.93 GPa) is higher than that of pure (Ti

Mo)C ceramics (~23.22 GPa). Additionally

the fracture toughness of (Ti

Mo)B

–(Ti

Mo)C based composites increases with the addition of SiB

reaching up to 5.07 MPa·m

1/2

which is significantly higher than that of pure (Ti

Mo)C ceramics (3.02 MPa·m

1/2

). Using (Ti

Mo)C and SiB

as raw materials and employing reactive spark plasma sintering

(Ti

Mo)B

–(Ti

Mo)C based multiphase high-entropy ultra-high temperature ceramics with a fine-grained structure and excellent mechanical properties could be obtained.

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