1) duration of diamond nuclei incubation
金刚石晶核孕育期
1.
The phenomenon that the higher filament carburization degree will cause the shorter duration of diamond nuclei incubation and the easier possibility of enhancing the nucleation density was elucidated.
首次总结了影响热丝 CVD金刚石晶核孕育期的几种因素 。
2) diamond-impregnated
孕镶金刚石
1.
A new type of diamond-impregnated PDC bit was developed according to the characteristics of medium hard rock formation.
针对中硬岩层的特点设计了一种孕镶金刚石复合片钻头,介绍了其切削结构、特点及切削原理。
3) nucleation incubation period
形核孕育期
1.
Microscopic phase field simulation on the nucleation incubation period of L1_2 and D0_(22) phases in Ni_(75)Cr_(25-x)Al_x alloy
Ni_(75)Cr_(25-x)Al_x合金中L1_2相和D0_(22)相形核孕育期的微观相场模拟
4) diamond nucleus
金刚石核
1.
In this work, the forming energy is emphatically calculated that a diamond nucleus is built up on a micro defect (pit) produced on the substrate surface by ion bombardment in the process of negative bias enhanced diamond nucleation.
金刚石核化是制备金刚石薄膜的关键。
5) impregnated diamond bit
孕镶金刚石钻头
1.
Optimization design and test of nonsmooth ratio of bionics impregnated diamond bit
仿生孕镶金刚石钻头非光滑度优化设计及试验
2.
Two types of matrix are provided for selecting in making impregnated diamond bit for Continental Scientific Drilling.
在对普通孕镶金刚石钻头高温力学性能检测的基础上 ,实验研究了 6种WC(W )基和 6种Ni基配方胎体的高温力学性质 ,从而提出 2种可供研制大陆科学钻探深部高温孔段孕镶金刚石钻头胎体使用的配方方案。
3.
A new type of impregnated diamond bit with two sorts of diamond abrasives has been developed, which can improve both penetration rate and service life simultaneously.
研制出一种两级磨料新型孕镶金刚石钻头，该种钻头解决了时效与寿命不能同步提高这一长期困扰钻头研制者的难题。
6) impregnated diamond segment
金刚石孕镶块
补充资料：聚晶金刚石钻头
聚晶金刚石钻头
polycrystalline diamond bit
Juling】l叩angshl zuantou聚晶金刚石钻头(polyerystalline diamond bit) 以聚晶金刚石或聚晶金刚石复合片作为切削刃具的钻头。它是20世纪80年代出现的新型钻头。由于聚晶金刚石的耐磨性比硬质合金高一到两个数量级，比天然金刚石的耐磨性还要高，扩大了切削破碎的使用范围，在石油钻井、地质勘探的岩芯钻中得到推广应用，有着十分广阔的前景. 聚晶金刚石是用微米级金刚石粉和硅等加催化剂在高温高压下聚结而成，通常做成2.smm大小的立方体或边长4mm厚2.smm的等边三角形。其耐热上限可达1200℃，有较高的韧性和极高的耐磨性，可作为切削破碎岩石的刃尖， 聚晶金刚石复合片，是在厚3~smm的钨钻硬质合金薄片的基底表面烧结一层厚度为0.5~lmm的聚晶金刚石，这种结构增强了聚晶金刚石的抗冲击能力，又便于焊接，常用的聚晶金刚石复合片可直接焊接在切削面上.复合片直径在12mm以下. (黄士芳)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条