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
502-505
,共4页
自蔓延高温合成%热等静压%AlN-TiN-TiB_2复相导电陶瓷
自蔓延高溫閤成%熱等靜壓%AlN-TiN-TiB_2複相導電陶瓷
자만연고온합성%열등정압%AlN-TiN-TiB_2복상도전도자
self-propagating high temperature synthesis%hot isostatic pressure%AlN-TiN-TiB_2 composite conductive ceramics
以Al、TiN、B_4C、Si为原材料,采用自蔓延高温合成热等静压(SHS/HIP)技术制备了AlN-TiN-TiB_2复相导电陶瓷,测定其相对密度、维氏硬度、抗弯强度和断裂韧度等力学性能,并确定了最佳原料比.利用XRD、SEM分析了AlN-TiN-TiB_2复相导电陶瓷的物相和显微组织,材料的断裂模式主要是沿晶断裂.并且研究了不同比例复相陶瓷在不同温度下的电阻率.
以Al、TiN、B_4C、Si為原材料,採用自蔓延高溫閤成熱等靜壓(SHS/HIP)技術製備瞭AlN-TiN-TiB_2複相導電陶瓷,測定其相對密度、維氏硬度、抗彎彊度和斷裂韌度等力學性能,併確定瞭最佳原料比.利用XRD、SEM分析瞭AlN-TiN-TiB_2複相導電陶瓷的物相和顯微組織,材料的斷裂模式主要是沿晶斷裂.併且研究瞭不同比例複相陶瓷在不同溫度下的電阻率.
이Al、TiN、B_4C、Si위원재료,채용자만연고온합성열등정압(SHS/HIP)기술제비료AlN-TiN-TiB_2복상도전도자,측정기상대밀도、유씨경도、항만강도화단렬인도등역학성능,병학정료최가원료비.이용XRD、SEM분석료AlN-TiN-TiB_2복상도전도자적물상화현미조직,재료적단렬모식주요시연정단렬.병차연구료불동비례복상도자재불동온도하적전조솔.
AlN-TiN-TiB_2 composite conductive ceramics from powder mixtures of Al, TiN, B_4C and Si were fabricated by self-propagating high temperature synthesis (SHS) and hot isostatic pressing (HIP). The compositions and morphologies of the combustion product were studied by XRD and SEM. The fracture mode of SHS/HIP sintered AlN-TiN-TiB_2 composite conductive ceramics belongs to brittle intercrystalline fracture. The temperature-dependence and composition-dependence of the electrical resistivity of AlN-TiN-TiB_2 ceramics were studied. The electrical resistivity was 100～3000 μΩ·cm.
