CAJ | 학술논문

文章研究了微量 La 元素的添加对金刚石钻头胎体的抗弯强度、磨损失重、硬度等力学性能的影响。并通过扫描电镜对不同样品断口形貌进行了分析对比。研究结果表明：加入微量的 La 元素，胎体的抗弯强度τ0有所上升，磨损失重Δm 有所下降，硬度 HRB 基本没有太大变化。含金刚石试样的断口形貌电镜照片表明：微量 La 元素的加入，可以减少胎体中的孔洞缺陷，改善胎体的组织结构，提高胎体的力学性能。
문장연구료미량 La 원소적첨가대금강석찬두태체적항만강도、마손실중、경도등역학성능적영향。병통과소묘전경대불동양품단구형모진행료분석대비。연구결과표명：가입미량적 La 원소，태체적항만강도τ0유소상승，마손실중Δm 유소하강，경도 HRB 기본몰유태대변화。함금강석시양적단구형모전경조편표명：미량 La 원소적가입，가이감소태체중적공동결함，개선태체적조직결구，제고태체적역학성능。
In this article,the influence on mechanical properties of drill bit matrix such as the bending strength,wear weight loss and rigidity has been studied when small amount of La element is added.Fracture morphology of different samples has been compared un-der scanning electron microscope.The result shows that when small amount of La ele-ment is added,the bending strength of the matrix(τ0)increases,the wear weight loss (Δm)decrease and the rigidity remains almost the same.Fracture morphology of the dia-mond contained sample indicates that small amount of La element can reduce the hole de-fect of the matrix and improve the structure of the matrix,thus the mechanical property will be improved.