1) superficial charring
木料表面碳化
2) surface carbonization
表面碳化
1.
The paper surveys a great deal of old concrete buildings which were built eighty years ago,measures the rebound value of old concrete components that bear differ stress,and designs a simulated experiment on aging concrete components,in order to analyze the cause of surface carbonization of old concrete.
对多栋在役80年的混凝土建筑进行调查,检测了不同受力状态下的高龄混凝土构件的表面回弹值,并设计了一组混凝土构件老化室内模拟实验,用以分析高龄混凝土结构表面碳化发展机理。
2.
Key elements have been presented including the investigation and analysis of resilience number of the old concrete and surface carbonization depth,the experimental contrast between th.
因高龄混凝土表面碳化,破坏了钢筋周围的钝化膜以及碳化层(CaCO3),随时间推移逐渐由脆性转为塑性,塑性裂纹扩展导致钢筋锈蚀,从而使得混凝土结构承载能力降低。
3.
Based on that surface carbonization destroys passivation menbrane and the concrete s carbonizated layer(CaCO3) transfers from brittleness to plasticity gradually,the spreading of plastic crack causes corrosion of the steel bar,thus reduces bearing capacity of the concrete structure.
基于混凝土表面碳化破坏了钢筋周围的钝化膜以及碳化层(CaCO3)随时间推移逐渐由脆性转为塑性,塑性裂纹扩展导致钢筋锈蚀,从而使得混凝土结构承载能力降低。
3) surface carbon oxides
表面碳氧化物
4) Carbon surface oxide species
碳表面氧化物种
5) Hydroxyl ferric oxide
碳钢表面氧化物
6) carburizing case hardening
渗碳表面强化
1.
The feasibility of 20CrNi2Mo replacing 20Cr2Ni4 used for heavy-duty gears by carburizing case hardening is testified, and the heat treatment, microstructure and performances of direct hardened 20CrNi2Mo steel are studied.
针对20CrNi2Mo钢的性能及应用特点,分析论证了20CrNi2Mo钢渗碳表面强化代替20Cr2Ni4钢用作重载齿轮材料的可行性,研究了20CrNi2Mo钢整体强化的热处理工艺、组织与性能。
补充资料：碳化硅晶须补强碳化硅陶瓷基复合材料
分子式：
CAS号：
性质：以碳化硅陶瓷为基和以碳化硅晶须为增强剂的新型陶瓷材料。通过晶须的载荷转移、拔出及裂纹偏转作用，获得比普通碳化硅更高的强度和韧性。使用温度达1400℃。是一种重要的高温结构陶瓷。用于燃气轮机叶片等高温部件和耐磨件制造。采用原位生长工艺和烧结工艺制取。
CAS号：
性质：以碳化硅陶瓷为基和以碳化硅晶须为增强剂的新型陶瓷材料。通过晶须的载荷转移、拔出及裂纹偏转作用，获得比普通碳化硅更高的强度和韧性。使用温度达1400℃。是一种重要的高温结构陶瓷。用于燃气轮机叶片等高温部件和耐磨件制造。采用原位生长工艺和烧结工艺制取。
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