稀有金属材料与工程
稀有金屬材料與工程
희유금속재료여공정
RARE METAL MATERIALS AND ENGINEERNG
2009年
z2期
906-908
,共3页
碳化硼%ZrB_2-SiC%力学性能%显微结构%高温强度
碳化硼%ZrB_2-SiC%力學性能%顯微結構%高溫彊度
탄화붕%ZrB_2-SiC%역학성능%현미결구%고온강도
B_4C%ZrB_2-SiC%mechanical properties%microstructure%high temperature strength
采用放电等离子烧结方法(SPS),在烧结温度为1700 ℃下,制备出ZrB_2-SiC-B_4C复合材料,研究了添加不同量的碳化硼(B_4C)对BrB_2-SiC基陶瓷力学性能和微观组织的影响.结果表明:ZrB_2-SiC-5%B_4C(质量分数, 下同)材料的高温强度高于ZrB_2-SiC-3%B_4C材料的高温强度,两种材料的致密度都在95%左右.加入B4C之后,材料的断裂韧性较未加入B4C材料的高.
採用放電等離子燒結方法(SPS),在燒結溫度為1700 ℃下,製備齣ZrB_2-SiC-B_4C複閤材料,研究瞭添加不同量的碳化硼(B_4C)對BrB_2-SiC基陶瓷力學性能和微觀組織的影響.結果錶明:ZrB_2-SiC-5%B_4C(質量分數, 下同)材料的高溫彊度高于ZrB_2-SiC-3%B_4C材料的高溫彊度,兩種材料的緻密度都在95%左右.加入B4C之後,材料的斷裂韌性較未加入B4C材料的高.
채용방전등리자소결방법(SPS),재소결온도위1700 ℃하,제비출ZrB_2-SiC-B_4C복합재료,연구료첨가불동량적탄화붕(B_4C)대BrB_2-SiC기도자역학성능화미관조직적영향.결과표명:ZrB_2-SiC-5%B_4C(질량분수, 하동)재료적고온강도고우ZrB_2-SiC-3%B_4C재료적고온강도,량충재료적치밀도도재95%좌우.가입B4C지후,재료적단렬인성교미가입B4C재료적고.
ZrB_2-SiC-B_4C was prepared by Spark Plasma Sintering (SPS) process at 1700 ℃. The effect of B_4C content on the mechanical properties and microstructure of ZrB_2-SiC based ceramics was studied. The results show that compared with materials with 3%wtB_4C, the high-temperature strength of the materials with 5wt%B_4C is higher. The relative density is about 95% for all of the materials. Fracture toughness increases when B4C is added.
