FABRICATION AND CHARACTERIZATION OF NANO-COMPOSITE MATERIALS CONSISTING OF SOLID SOLUTION CERAMICS AS THEIR MATRICES

以固溶陶瓷为基体的纳米复合材料的制备与表征

• 批准号: 12450275
• 负责人: YAMAGUCHI Osamu
• 金额: $ 6.85万
• 依托单位: DOSHISHA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450275/
• 关键词: Solid Solution Ceramics; Nano-structure; High-pressure sintering; Self-propagating High-temperature Synthesis (SHS); Spark Plasma Sintering; Chromium Oxide; Molybdenum Silicide; α-Titanium solid solution; チタニウムTi; 固溶体; アルミニウムAl; 機械的特性; ニケイ化モリブ

In this research, several kinds of inorganic monolithic and/or composite materials with high densities have been fabricated using self-propagating high-temperature synthesis Sol-gel derived ZrO_2/Al_2O_3 solid solution powders were sintered under uniaxial high-pressure of 1 Gpa. Intermetallic MoSi_2 prepared by SHS was densified to 98% of theoretical by SPS. Poor-sinterable Cr_2O_3 was consolidated without and with nanometer-size additives (W and Mo particles) via a high-pressure sintering method, SPS, and HIP, respectively. They were evaluated from points of view of mechanical properties in relations to their micro- or nano-structures.

本研究采用自蔓延高温合成技术制备了几种高密度的无机块体和/或复合材料，并在1 Gpa的单轴高压下烧结了Sol-Gel法制备的ZrO2/Al2O3固溶体粉末。SHS法制备的MoSi2金属间化合物经SPS致密化，达到理论致密化的98%。采用高压烧结法、SPS法和HIP法分别在未添加纳米添加剂(W)和添加纳米添加剂(Mo)的条件下，对难烧结态的Cr2O_3进行固结。从与其微米或纳米结构相关的机械性能的角度对它们进行了评估。