摘要
采用热压法制备了80．6％B4C／11．6％TiB2／4．7％Mo／3％C质量分数陶瓷复合材料，分析了烧结工艺对力学性能和微观结构的影响。烧结温度变化范围是1800～1950℃，保温时间变化范围是15～60min，烧结压力30～35MPa。当烧结参数为1900℃、45min、35MPa，B4C／TiB：／Mo／C陶瓷复合材料抗弯强度、硬度、韧性、相对密度分别为705MPa、20．6GPa、3．82MPa·m^1/2、98．2％。
80.6wt. % B4C/11.6wt. % TiB2/4.7wt% Mo/3wt. % C ceramic composite is fabricated by hotpressing sintering and the effect of sintering temperature, holding time and pressure on mechanical properties and microstructure of the composite are analyzed. The temperature is raised from 1800℃ to 1950℃, the holding time ranges from 15min to 60min and the pressure is 30-35MPa. The strength, hardness, toughness and densification of the composite prepared by the optimized process of 1900℃ under 35MPa for 45min are 705MPa, 20.6GPa, 3.82MPa· m^1/2, 98.2% , respectively.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2006年第4期844-848,834,共6页
Journal of Synthetic Crystals
基金
ProjectsupportedbytheNaturalScienceFoundationofShandongProvince(Y2004F08),theSpecializedResearchFundfortheDoctoralProgramofHigherEducation(20030422105)andtheSustainProjectofNewCenturyExcellenceTalent(NCET-04-0622)
关键词
B4C
烧结
力学性能
微结构
B4C
sintering technique
mechanical properties
microstructure
