无机材料学报 ›› 2012, Vol. 27 ›› Issue (3): 225-233.DOI: 10.3724/SP.J.1077.2011.00225 CSTR: 32189.14.SP.J.1077.2011.00225

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硼化物陶瓷: 烧结致密化、微结构调控与性能提升

张国军1, 邹 冀1,2, 倪德伟1,2, 刘海涛1,2, 阚艳梅1   

  1. (1. 中国科学院 上海硅酸盐研究所 高性能陶瓷和超微结构国家重点实验室, 上海200050; 2. 中国科学院 研究生院, 北京100049)
  • 收稿日期:2011-04-24 修回日期:2011-06-14 出版日期:2012-03-20 网络出版日期:2012-02-16
  • 作者简介:张国军, 男, 博士, 中国科学院上海硅酸盐研究所研究员, 中科院“百人计划”。多年来一直从事先进非氧化物陶瓷的材料设计、制备科学、微结构调控与材料性能表征等研究工作, 在J. Am. Ceram. Soc.等SCI期刊上发表论文130余篇, h因子22, 申请发明专利10余项。曾获1996年中国硅酸盐学会青年科技奖, 作为主要研究人员分别于1995年和1997年获国家科学技术进步2等奖和建材部科学技术进步2等奖各一项, 2009 年获中国科学院“百人计划”结题优秀。目前的主要研究方向包括超高温陶瓷(UHTCs), 第四代先进核能系统(Gen IV)用陶瓷材料及复合材料,织构化先进非氧化物陶瓷材料等。
  • 基金资助:

    国家自然科学基金(50632070, 50972152, 91026008, 51111140017)

Boride Ceramics: Densification, Microstructure Tailoring and Properties Improvement

ZHANG Guo-Jun1, ZOU Ji1,2, NI De-Wei1,2, LIU Hai-Tao1,2, KAN Yan-Mei1   

  1. (1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Shanghai 200050, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2011-04-24 Revised:2011-06-14 Published:2012-03-20 Online:2012-02-16
  • Supported by:

    National Natural Science Foundation of China (50632070, 50972152, 91026008, 51111140017)

摘要: TiB2, ZrB2, HfB2, B4C及BN为代表的硼化物陶瓷具有优异的物理化学性能, 在超高温、超硬以及超疏水等极限条件下有广阔的应用前景, 但材料的烧结致密化困难、断裂韧性低等问题制约了它们更为广泛的应用. 本文针对无压烧结在材料制备过程中的优势, 探讨了影响硼化物陶瓷无压烧结的主要因素, 总结了以“除氧”机制为代表的硼化物陶瓷无压烧结技术; 针对硼化物陶瓷韧性低的不足, 介绍了以“板晶增韧”、“纳米相增强”为代表的硼化物陶瓷微结构调控手段和强韧化措施. 最后, 文章还对硼化物陶瓷的织构化设计、制备方法与性能提升进行了简要介绍.

关键词: 硼化物陶瓷, 无压烧结, 微结构调控, 织构化, 综述

Abstract: Borides, including TiB2, ZrB2, HfB2, B4C and BN, have good physical and chemical properties, which have been proposed for a variety of applications in extreme environments, such as ultra-high temperature, super-hard and super-hydrophobic. However, the engineering applications of these borides are still restricted by their poor sinterability and unsatisfied material properties including low fracture toughness. In regard with the advantages of pressureless sintering in preparation of ceramics, the main factors that affect the pressureless sintering of borides are discussed. The pressureless sintering technology of borides represented by oxygen removing mechanism is summarized. In consideration of the low toughness of borides, the microstructure tailoring methods represented by platelet toughening and nano phase reinforced are emphasized. At last, the methods for preparing textured boride ceramics are also briefly introduced.

Key words: borides, pressureless densification, microstructure tailoring, texture, review

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