材料颗粒度对粉末药型罩特性的影响  

Effect of Material Particle Size on the Properties of Powder Liner

作　　者：高永宏[1,2] 庞瑞强 王凤英 顾晓辉[2] 

机构地区：[1]中北大学化工与环境学院,山西太原030051 [2]南京理工大学机械工程学院,江苏南京210094 [3]晋西集团理化计量中心,山西太原030051

出　　处：《高压物理学报》2014年第4期455-460,共6页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(11072222)

摘　　要：为研究粉末材料的颗粒尺寸及其分布对粉末药型罩特性的影响,以W、Cu粉末为药型罩的主体材料,添加少量Bi粉以增加其流动性,在配比一定的条件下,通过改变各组分的颗粒尺寸,制备了3种药型罩。利用扫描电子显微镜,观察了W、Cu粉末的颗粒形貌,发现W粉的颗粒形状为规则的结晶体,而Cu粉颗粒的形状不规则。对3种药型罩进行了微观结构观察、密度测定、维氏硬度测定以及破甲威力实验。结果表明:在粉末材料特性和配比一定的条件下,减小颗粒尺寸可有效提高粉末药型罩的致密性、密度和破甲威力,但对维氏硬度的影响不明显。In order to investigate the influence of particle size of powder material and its distribution on the properties of powder liner,W and Cu powders were chosen as the main material of shaped charge liner,and a bit of bismuth powder was added to increase the liquidity of the mixed powders. The parti- cle properties of the W and Cu powders were studied by means of scanning electron microscopy. It showed that the W powder was regular,while the Cu powder was irregular. In the condition of materi- al mixture ratio being certain, three sets of liners were developed through changing the particle size of each component, and their microstructure, density, Vickers hardness and penetration power were stud- ied. The results show that reducing the particle size can effectively improve the compactness, density and penetration power of powder liner when the powder material properties and proportion are un- changed,but it has no significant effect on the Vickers hardness of powder liner.

关 键 词：粉末材料 颗粒度 药型罩 破甲威力 

分 类 号：TJ410.333[兵器科学与技术—火炮、自动武器与弹药工程] O385[理学—流体力学]