玻璃包覆层对钴基玻璃包覆微细丝拉伸强度的影响  

Effect of Glass Coating on Tensile Strength of Co-based Glass-Covered Microwire

作　　者：王宪军[1] 刘航[1] 王自东[1] 何璞祯[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《有色金属》2011年第1期66-71,共6页Nonferrous Metals

基　　金：民口配套研制基金项目(JPPT-115-147)

摘　　要：研究玻璃层厚度对钴基玻璃包覆微细丝强度的影响。用体积浓度为45%的HF溶液对总直径为Φ23.0μm、金属芯的直径为Φ7.1μm的钴基玻璃包覆微细丝的玻璃包覆层进行侵蚀,以达到不同厚度的玻璃包覆层。用光学显微镜对处理过的微细丝进行尺寸形貌观察,用纤维强度仪对处理过的微细丝进行单丝拉伸强度试验。钴基玻璃包覆微细丝的拉伸断裂过程为线弹性断裂,最大拉伸强度可达3.4GPa,延伸率为2.49%,韧度为4208MPa.%。钴基玻璃包覆微细丝为高韧性、高强度复合纤维。The dependence of tensile strength of Co-based glass-covered microwire on thicknesses of glass coating is investigated,the Co-based glass-covered microwires with total diameter Φ23.0μm and metallic core diameter Φ7.1μm are eroded to the glass-covered microwires with different thicknesses of glass coating by hydrofluoric solution with 45% volumetric concentration.The dimensions of the microwires are observed by metallograpic microscope and Single pretreated microwires of different sizes are uniaxially stretched by filament tenacity machine.The Co-based glass-covered microwire is stretched to fracture with a mechanism of linear elastic fracture.And the maximum tensile strength of Co-based glass-covered microwire can reach up to 3.4GPa with the elongation of 2.49% and the toughness 4208 MPa·%.It can be concluded that Co-based glass-covered microwire is high toughness and high composite filament.

关 键 词：复合材料 高强度高韧性复合纤维 玻璃包覆层 钴基玻璃包覆微细丝 拉伸强度 

分 类 号：TG113.25[金属学及工艺—物理冶金] TG146.16[金属学及工艺—金属学]