1) original cementite
初生渗碳体
1.
The results showed that with the increase of temperature and pressure,a considerable amount of original cementite formed within 20 seconds after the iron-based catalyst melted completely,and the carbon solubility reached a maximum saturation.
利用扫描电子显微镜观察了不同合成时间的金刚石合成效果以及相应触媒的组织结构,结果表明:随着压力、温度的升高,铁基触媒全部熔化为液态后约20秒内,熔体对碳的溶解度可达到极大的过饱和程度,生成数量极大的初生渗碳体,同时,金刚石单晶在这种环境中生成。
2.
The results showed that more original cementite in catalyst at room temperature and atmosphere pressure corresponds to better quality and higher yield of diamond, whereas poor quality and lower yield of diamond corresponds to less original cementite in it.
结果表明,组织中有较多的初生渗碳体时,金刚石的质量好,产量高;反之,则质量差,数量少。
2) cementite
[英][si'mentait] [美][sɪ'mɛn,taɪt]
渗碳体
1.
Spheroidization behavior of cementite during warm compression deformation;
温压缩变形过程中渗碳体的球化行为
2.
Behaviour of Cementite in Deformative Procedure of Rolled White Cast Iron;
渗碳体在白口铸铁轧制变形过程中的行为
3.
Microstructure of cementite beside interface in 321/Qd370qD explosive welding
321/Qd370qD爆炸焊接界面渗碳体的微观结构
3) gas carburizing
气体渗碳
1.
Based on the experimental results of adding RE to gas carburizing in routine temperature(920~930 ℃),the RE carburizing process model in the routine temperature is put forward.
基于常规温度(920~930℃)下气体渗碳进行优化加入稀土元素的试验结果,提出常规温度下稀土渗碳的工艺模型,用通用有限元分析AD INAT程序进行了数值模拟,取得了较满意的结果。
2.
The factors which affect gas carburizing quality of die & mold steel are analyzed, and ten kinds of usual defects are stressed mainly,as well as the improvement steps are provided.
分析了影响模具钢气体渗碳质量的因素,重点对其10种常见缺陷进行了分析,并提出了改善措施。
3.
In the paper,the author presents the principle of computer control on gas carburizing with great attention on the improvement of control accuray of carbon potential.
介绍计算机控制气体渗碳的原理 ,重点阐述怎样提高碳势控制精度。
4) carburizing body
渗碳基体
5) solid carburizing
固体渗碳
1.
Effect of rare earth on solid carburizing of 20CrMnTi steel;
稀土在20CrMnTi钢固体渗碳中的作用
2.
The coating of NiTi alloy treated by solid carburizing with normal and polymer cementation agent is composed with TiC and TiOx phases.
经过固体渗碳处理后, NiTi合金在3。
3.
In this paper,specimen with different thickness of low carbon steel was carburized in two solid carburizing media(pure carbon powder and 90% pure carbon powder +10%Na 2CO 3).
用不含及含10%Na2CO3的粉末渗剂对不同厚度的低碳钢试样进行了固体渗碳。
6) solid carburization
固体渗碳
1.
The process of solid carburization and diffusion annealing of high alloy steels was discussed,and the corresponding mathematical model was presented.
讨论了高合金钢固体渗碳和渗碳后渗层的扩散处理 ,提出了计算高合金钢固体渗碳及渗件表面不发生脱碳情况下渗层扩散处理的碳浓度分布的数学模型 ,以此模型对 3Cr13和Cr10钢固体渗碳和渗层扩散处理的碳浓度分布进行了计算机模拟。
2.
The carbon profile of carburized layer for 3Cr13 and Cr10 with solid carburization is simulated by computer.
本文讨论了高合金钢过饱和渗碳过程 ,提出了计算高合金钢固体渗碳的碳浓度分布的数学模型 ,以此模型对 3Cr1 3和Cr1 0固体渗碳的碳浓度分布进行了计算机模拟。
补充资料:渗碳体
即碳化铁Fe3C,一般含碳6.67%,是一种具有极高硬度(BHN600以上)的脆性化合物。呈斜方结构。渗碳体的数量、形态和分布对钢和铸铁的性能影响很大。渗碳体是碳在退火和正火钢中以及白口铸铁中的一般存在形式,也是共析组织珠光体的组成之一(另一为铁素体)。在过共析钢中,则作为自由渗碳体,在珠光体晶界呈网状析出,或以片状在晶内析出。当淬火碳钢的回火温度超过约250℃时,马氏体中的过饱和碳以针状或片状渗碳体的形态析出。渗碳体内经常固溶有其他元素。在碳钢中,一部分铁为锰所置换;在合金钢中为铬、钨、钼等元素所置换,形成合金渗碳体。渗碳体不是稳定的碳化物,在长时间退火后将最终分解出自由碳(石墨)。
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