CAJ | 학술논문

评价了国内固体火箭发动机喉衬中成功应用的第一代高强石墨、第二代高密高强石墨、第三代各向同性石墨的物理、力学、热学等材料基本性能和抗热冲击、耐烧蚀等应用功能，并与国外相应的石墨材料性能与功能进行了分析对比，为建立喉衬用石墨材料数据库奠定了基础。揭示了石墨材料拉伸强度、热导率、弹性模量及热膨胀系数与抗热冲击功能的关联度。指出适当放大配料方的最大颗粒度，提高石墨化温度和适宜控制石墨材料的密度范围，是提高各向同性石墨材料综合性能的重点改进方向。
평개료국내고체화전발동궤후츤중성공응용적제일대고강석묵、제이대고밀고강석묵、제삼대각향동성석묵적물리、역학、열학등재료기본성능화항열충격、내소식등응용공능，병여국외상응적석묵재료성능여공능진행료분석대비，위건립후츤용석묵재료수거고전정료기출。게시료석묵재료랍신강도、열도솔、탄성모량급열팽창계수여항열충격공능적관련도。지출괄당방대배료방적최대과립도，제고석묵화온도화괄의공제석묵재료적밀도범위，시제고각향동성석묵재료종합성능적중점개진방향。
The paper evaluates the basic material properties including physical,mechanical and thermal properties, then analy?ses the application performance such as thermal shock resistance and ablation resistance of the first generation high?strength graph?ite,the second generation high?density and high?strength graphite and the third generation isotropy graphite,which have been suc?cessfully applied in throat insert of solid rocket motor in China.Analytical comparison of material properties and functions between a?bove?mentioned graphite and foreign similar graphite has been conducted to lay a foundation to establish a database of throat?insert?used graphite material.The correlation among tensile strength,thermal conductivity,elasticity modulus,coefficient thermal expansion and thermal shock resistance has been revealed.The paper indicates that properly increasing the granularity in the formula,raising graphitization temperature and properly controlling the density range of graphite constitute are the major improving directions to en?hance the overall performance of isotropy graphite.